Q97
BIOLOGY
Unit 10: Ecology and Environment
Which one of the following is not a method of in situ conservation of biodiversity?
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2019 (3 sets)
- A. Biosphere Reserve
- B. Wildlife Sanctuary
- C. Botanical Garden
- D. Sacred Grove
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Q98
BIOLOGY
Unit 7: Genetics and Evolution
Under which of the following conditions will there be no change in the reading frame of the following mRNA? 5'AACAGCGGUGCUAUU3'
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2019 (3 sets)
- A. Insertion of G at 5th position
- B. Deletion of G from 5th position
- C. Insertion of A at G at 4th and 5th positions respectively
- D. Deletion of GGU from 7th, 8th and 9th positions
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Q99
BIOLOGY
Unit 10: Ecology and Environment
Which of these following methods is the most suitable for disposal of nuclear waste?
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2019 (2 sets)
- A. Shoot the waste into space
- B. Bury the waste under Antarctic ice-cover
- C. Dump the waste within rocks under deep ocean
- D. Bury the waste within rocks deep below the Earth's surface
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Q100
BIOLOGY
Unit 8: Biology and Human Welfare
Match the following organisms with the products they produce: (a) Lactobacillus (b) Saccharomyces cerevisiae (c) Aspergillus niger (d) Acetobacter aceti. Products: (i) Cheese (ii) Curd (iii) Citric Acid (iv) Bread (v) Acetic Acid.
- A. (1) ii iv v iii
- B. (2) ii iv iii v
- C. (3) iii iv v i
- D. (4) ii i iii v
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Q101
BIOLOGY
Unit 7: Genetics and Evolution
What map unit (Centimorgan) is adopted in the construction of genetic maps?
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2019 (3 sets)
- A. A unit of distance between two expressed genes, representing 10% cross over
- B. A unit of distance between two expressed genes, representing 100% cross over
- C. A unit of distance between genes on chromosomes, representing 1% cross over
- D. A unit of distance between genes on chromosomes, representing 50% cross over
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Q102
BIOLOGY
Unit 5: Human Physiology
Select the hormone-releasing Intra-Uterine Devices?
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2019 (1 set)
- A. Vaults, LNG-20
- B. Multiload 375, Progestasert
- C. Progestasert, LNG-20
- D. Lippes Loop, Multiload 375
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Q103
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following can be used as a biocontrol agent in the treatment of plant disease?
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2019 (3 sets)
- A. Trichoderma
- B. Chlorella
- C. Anabaena
- D. Lactobacillus
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Q104
BIOLOGY
Unit 9: Biotechnology and Its Applications
Expressed Sequence Tags (ESTs) refers to:
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2019 (1 set)
- A. Genes expressed as RNA
- B. Polypeptide expression
- C. DNA polymorphism
- D. Novel DNA sequences
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Q105
BIOLOGY
Unit 5: Human Physiology
Colostrum, the yellowish fluid, secreted by mother during the initial days of lactation is very essential to impart immunity to the newborn infants because it contains:
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2019 (3 sets)
- A. Natural killer cells
- B. Monocytes
- C. Macrophages
- D. Immunoglobulin A
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Q106
BIOLOGY
Unit 8: Biology and Human Welfare
Select the incorrect statement:
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2019 (1 set)
- A. Inbreeding increases homozygosity
- B. Inbreeding is essential to evolve purelines in any animal
- C. Inbreeding selects harmful recessive genes that reduce fertility and productivity
- D. Inbreeding helps in accumulation of superior genes elimination of undesirable genes
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Q107
BIOLOGY
Unit 5: Human Physiology
Select the correct sequence of transport of sperm cells in male reproductive system:
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2019 (1 set)
- A. Testis -> Epididymis -> Vasa efferentia -> Rete testis -> Inguinal canal -> Urethra
- B. Seminiferous tubules -> Rete testis -> Vasa efferentia -> Epididymis -> Vas deferens -> Ejaculatory duct -> Urethra -> Urethral meatus
- C. Seminiferous tubules -> Vasa efferentia -> Epididymis -> Inguinal canal -> Urethra
- D. Testis -> Epididymis -> Vasa efferentia -> Vas deferens -> Ejaculatory duct -> Inguinal canal -> Urethra -> Urethral meatus
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Q108
BIOLOGY
Unit 7: Genetics and Evolution
A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4 then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?
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2019 (3 sets)
- A. 0.36 (AA); 0.48(Aa); 0.16 (aa)
- B. 0.16 (AA); 0.24 (Aa); 0.36 (aa)
- C. 0.16 (AA); 0.48 (Aa); 0.36 (aa)
- D. 0.16 (AA); 0.36 (Aa); 0.48 (aa)
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Q109
BIOLOGY
Unit 1: Diversity in Living World
Match the following organisms with their respective characteristics: (a) Pila (b) Bombyx (c) Pleurobrachia (d) Taenia. Characteristics: (i) Flame cells (ii) Comb plates (iii) Radula (iv) Malpighian tubules.
↻ Repeated question — also appeared in
2019 (2 sets)
- A. (iii) (ii) (i) (iv)
- B. (iii) (iv) (ii) (i)
- C. (ii) (iv) (iii) (i)
- D. (iiii) (ii) (iv) (i)
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Q110
BIOLOGY
Unit 3: Cell Structure and Function
The shorter and longer arms of a submetacentric chromosome are referred to as:
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2019 (4 sets)
- A. s-arm and l-arm respectively
- B. p-arm and q-arm respectively
- C. q-arm and p-arm respectively
- D. m-arm and n-arm respectively
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Q111
BIOLOGY
Unit 4: Plant Physiology
What is the site of perception of photoperiod necessary for induction of flowering in plants?
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2019 (4 sets)
- A. Lateral buds
- B. Pulvinus
- C. Shoot apex
- D. Leaves
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Q112
BIOLOGY
Unit 5: Human Physiology
Which part of the brain is responsible for thermoregulation?
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2019 (4 sets)
- A. Cerebrum
- B. Hypothalamus
- C. Corpus callosum
- D. Medulla oblongata
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Q113
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following pair of organelles does not contain DNA?
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- A. Mitochondria and Lysosomes
- B. Chloroplast and Vacuoles
- C. Lysosomes and Vacuoles
- D. Nuclear envelope and Mitochondria
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Q114
BIOLOGY
Unit 7: Genetics and Evolution
What is the genetic disorder in which an individual has an overall masculine development, gynaecomastia, and is sterile?
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2019 (4 sets)
- A. Turner's syndrome
- B. Klinefelter's syndrome
- C. Edward syndrome
- D. Down's syndrome
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Q115
BIOLOGY
Unit 4: Plant Physiology
Xylem translocates :-
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2019 (3 sets)
- A. Water only
- B. Water and mineral salts only
- C. Water, mineral salts and some organic nitrogen only
- D. Water, mineral salts, some organic nitrogen and hormones
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Q116
BIOLOGY
Unit 10: Ecology and Environment
Which of the following pairs of gases is mainly responsible for green house effect?
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2019 (3 sets)
- A. Ozone and Ammonia
- B. Oxygen and Nitrogen
- C. Nitrogen and Sulphur dioxide
- D. Carbon dioxide and Methane
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Q117
BIOLOGY
Unit 10: Ecology and Environment
Which of the following protocols did aim for reducing emission of chloroflurocarbons into the atmosphere?
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2019 (3 sets)
- A. Montreal protocol
- B. Kyoto protocol
- C. Gothenburg Protocol
- D. Geneva Protocol
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Q118
BIOLOGY
Unit 6: Reproduction
In some plants, the female gamete develops into embryo without fertilization. This phenomenon is known as :
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- A. Autogamy
- B. Parthenocarpy
- C. Syngamy
- D. Parthenogenesis
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Q119
BIOLOGY
Unit 5: Human Physiology
Which of the following sexually transmitted diseases is not completely curable ?
↻ Repeated question — also appeared in
2019 (1 set)
- A. Gonorrhoea
- B. Genital warts
- C. Genital herpes
- D. Chlamydiasis
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Q120
BIOLOGY
Unit 5: Human Physiology
Which of the following immune responses is responsible for rejection of kidney graft?
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2019 (3 sets)
- A. Auto- immune respones
- B. Humoral immune response
- C. Inflammatory immune response
- D. Cell-mediated immune response
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Q121
BIOLOGY
Unit 5: Human Physiology
Which of the following factors is responsible for the formation of concentrated urine?
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2019 (3 sets)
- A. Low levels of antidiuretic hormone.
- B. Maintaining hyperosmolarity towards inner medullary interstitium in the kidneys.
- C. Secretion of erythropoietin by juxtaglomerular complex.
- D. Hydrostatic pressure during glomerular filtration.
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Q122
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?
↻ Repeated question — also appeared in
2019 (1 set)
- A. Genetic code is not ambiguous
- B. Genetic code is redundant
- C. Genetic code is nearly universal
- D. Genetic code is specific
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Q123
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following statements is not correct?
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2019 (4 sets)
- A. Lysosomes have numerous hydrolytic enzymes.
- B. The hydrolytic enzymes of lysosomes are active under acidic pH.
- C. Lysosomes are membrane bound structures.
- D. Lysosomes are formed by the process of packaging in the endoplasmic reticulum.
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Q124
BIOLOGY
Unit 3: Cell Structure and Function
The concept of "Omnis cellula-e cellula" regarding cell division was first proposed by:
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- A. Rudolf Virchow
- B. Theodore Schwann
- C. Schleiden
- D. Aristotle
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Q125
BIOLOGY
Unit 5: Human Physiology
Use of an artificial kidney during hemodialysis may result in : (a) Nitrogenous waste build-up in the body (b) Non-elimination of excess potassium ions (c) Reduced absorption of calcium ions from gastro-intestinal tract (d) Reduced RBC production. Which of the following options is the most appropriate?
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2019 (3 sets)
- A. (a) and (b) are correct
- B. (b) and (c) are correct
- C. (c) and (d) are correct
- D. (a) and (d) are correct
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Q126
BIOLOGY
Unit 4: Plant Physiology
What is the direction of movement of sugars in phloem?
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2019 (3 sets)
- A. Non-multidirectional
- B. Upward
- C. Downward
- D. Bi-directional
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Q127
BIOLOGY
Unit 5: Human Physiology
Which of the following muscular disorders is inherited ?
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2019 (4 sets)
- A. Tetany
- B. Muscular dystrophy
- C. Myasthenia gravis
- D. Botulism
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Q128
BIOLOGY
Unit 1: Diversity in Living World
Consider following features: (a) Organ system level of organisation (b) Bilateral symmetry (c) True coelomates with segmentation of body. Select the correct option of animal groups which possess all the above characteristics.
↻ Repeated question — also appeared in
2019 (4 sets)
- A. Annelida, Arthropoda and Chordata
- B. Annelida, Arthropoda and Mollusca
- C. Arthropoda, Mollusca and Chordata
- D. Annelida, Mollusca and Chordata
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Q129
BIOLOGY
Unit 7: Genetics and Evolution
The frequency of recombination between gene pairs on the same chromosome as a measure of the distance between genes was explained by :
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2019 (4 sets)
- A. T.H. Morgan
- B. Gregor J. Mendel
- C. Alfred Sturtevant
- D. Sutton Boveri
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Q130
BIOLOGY
Unit 9: Biotechnology and Its Applications
Following statements describe the characteristics of the enzyme Restriction endonuclease. Identify the incorrect statement.
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2019 (2 sets)
- A. The enzyme cuts DNA molecule at identified position within the DNA
- B. The enzyme binds DNA at specific sites and cuts only one of the two strands.
- C. The enzyme cuts the sugar-phosphate backbone at specific sites on each strand.
- D. The enzyme recognizes a specific palindromic nucleotide sequence in the DNA
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Q131
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements is incorrect?
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2019 (3 sets)
- A. Morels and truffles are edible delicacies.
- B. Claviceps is a source of many alkaloids and LSD.
- C. Conidia are produced exogenously and ascospores endogenously.
- D. Yeasts have filamentous bodies with long thread-like hyphae.
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Q132
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Placentation, in which ovules develop on the inner wall of the ovary or in peripheral part, is:
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2019 (2 sets)
- A. Basal
- B. Axile
- C. Parietal
- D. Free central
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Q133
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is the most important causes for animals and plants being driven to extinction?
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2019 (3 sets)
- A. Habitat loss and fragmentation
- B. Drought and floods
- C. Economic exploitation
- D. Alien species invasion
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Q134
BIOLOGY
Unit 7: Genetics and Evolution
Variations caused by mutation, as proposed by Hugo de Vries, are
↻ Repeated question — also appeared in
2019 (3 sets)
- A. random and directional
- B. random and directionless
- C. small and directional
- D. small and directionless
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Q135
BIOLOGY
Unit 4: Plant Physiology
Respiratiory Quotient (RQ) value of tripalmitin is :
↻ Repeated question — also appeared in
2019 (3 sets)
- A. 0.9
- B. 0.7
- C. 0.07
- D. 0.09
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Q136
BIOLOGY
Unit 7: Genetics and Evolution
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect statement from the following:
↻ Repeated question — also appeared in
2019 (3 sets)
- A. This experiment does not follow the Principle of Dominance
- B. Pink colour in F1 is due to incomplete dominance.
- C. Ratio of F2 is 1/4 (Red) : 2/4 (Pink): 1/4 (White)
- D. Law of Segregation does not apply in this experiment.
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Q137
BIOLOGY
Unit 7: Genetics and Evolution
Select the incorrect statement.
↻ Repeated question — also appeared in
2019 (3 sets)
- A. Male fruit fly is heterogametic.
- B. In male grasshoppers, 50% of sperms have no sex-chromosome.
- C. In domesticated fowls sex of progeny depends on the type of sperm rather than egg.
- D. Human males have one of their sex-chromosome much shorter than the other.
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Q138
BIOLOGY
Unit 3: Cell Structure and Function
The correct sequence of phases of cell cycle is :
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2019 (3 sets)
- A. M -> G1 -> G2 -> S
- B. G1 -> G2 -> S -> M
- C. S -> G1 -> G2 -> M
- D. G1 -> S -> G2 -> M
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Q139
BIOLOGY
Unit 10: Ecology and Environment
Thiobacillus is a group of bacteria helpful in carrying out:
↻ Repeated question — also appeared in
2019 (1 set)
- A. Nitrogen fixation
- B. Chemoautotrophic fixation
- C. Nitrification
- D. Denitrification
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Q140
BIOLOGY
Unit 10: Ecology and Environment
Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:
↻ Repeated question — also appeared in
2019 (2 sets)
- A. making plastic sacks
- B. use as a fertilizer
- C. construction of roads
- D. making tubes and pipes
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Q141
BIOLOGY
Unit 1: Diversity in Living World
From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in :
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2019 (3 sets)
- A. Liverworts
- B. Mosses
- C. Pteridophytes
- D. Gymnosperms
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Q142
BIOLOGY
Unit 5: Human Physiology
Select the correct option.
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2019 (2 sets)
- A. 8th, 9th and 10th pairs of ribs articulate directly with the sternum.
- B. 11th and 12th pairs of ribs are connected to the sternum with the help of hyaline cartilage.
- C. Each rib is a flat thin bone and all the ribs are connected dorsally to the thoracic vertebrae and ventrally to the sternum.
- D. There are seven pairs of vertebrosternal, three pairs of vertebrochondral and two pairs of vertebral ribs.
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Q143
BIOLOGY
Unit 3: Cell Structure and Function
Concanavalin A is :
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2019 (1 set)
- A. an alkaloid
- B. an essential oil
- C. a lectin
- D. a pigment
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Q143
CHEMISTRY
Unit 19: Biomolecules
Concanavalin A is :
- A. an alkaloid
- B. an essential oil
- C. a lectin
- D. a pigment
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Q144
BIOLOGY
Unit 6: Reproduction
Extrusion of second polar body from egg nucleus occurs :
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2019 (4 sets)
- A. after entry of sperm but before fertilization
- B. after fertilization
- C. before entry of sperm into ovum
- D. simultaneously with first cleavage
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Q145
BIOLOGY
Unit 1: Diversity in Living World
Pinus seed cannot germinate and establish without fungal association. This is because :
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2019 (3 sets)
- A. its embryo is immature
- B. it has obligate association with mycorrhizae.
- C. it has very hard seed coat.
- D. its seeds contain inhibitors that prevent germination.
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Q146
BIOLOGY
Unit 10: Ecology and Environment
The Earth Summit held in Rio de Janeiro in 1992 was called :
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2019 (3 sets)
- A. to reduce CO2 emissions and global warming.
- B. for conservation of biodiversity and sustainable utilization of its benefits.
- C. to assess threat posed to native species by invasive weed species.
- D. for immediate steps to discontinue use of CFCs that were damaging the ozone layer.
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Q147
BIOLOGY
Unit 9: Biotechnology and Its Applications
DNA precipitation out of a mixture of biomolecules can be achieved by treatment with :
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- A. Isopropanol
- B. Chilled ethanol
- C. Methanol at room temperature
- D. Chilled chloroform
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Q148
BIOLOGY
Unit 4: Plant Physiology
Grass leaves curl inwards during very dry weather. Select the most appropriate reason from the following :
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2019 (2 sets)
- A. Closure of stomata
- B. Flaccidity of bulliform cells
- C. Shrinkage of air spaces in spongy mesophyll
- D. Tyloses in vessels
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Q149
BIOLOGY
Unit 5: Human Physiology
Match the following structures with their respective location in organs : (a) Crypts of Lieberkuhn (b) Glisson's Capsule (c) Islets of Langerhans (d) Brunner's Glands
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2019 (1 set)
- A. (1) (iii) (i) (ii) (iv)
- B. (2) (ii) (iv) (i) (iii)
- C. (3) (iii) (iv) (i) (ii)
- D. (4) (iii) (ii) (i) (iv)
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Q150
BIOLOGY
Unit 5: Human Physiology
Match the following hormones with the respective disease : (a) Insulin (b) Thyroxin (c) Corticoids (d) Growth Hormone
↻ Repeated question — also appeared in
2019 (2 sets)
- A. (1) (v) (i) (ii) (iii)
- B. (2) (ii) (iv) (iii) (i)
- C. (3) (v) (iv) (i) (iii)
- D. (4) (ii) (iv) (i) (iii)
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Q151
BIOLOGY
Unit 6: Reproduction
Which of the following contraceptive methods do involve a role of hormone ?
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2019 (3 sets)
- A. Lactational amenorrhea, Pills, Emergency contraceptives
- B. Barrier method, Lactational amenorrhea, Pills
- C. CuT, Pills, Emergency contraceptives
- D. Pills, Emergency contraceptives, Barrier methods
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Q152
BIOLOGY
Unit 8: Biology and Human Welfare
Drug called 'Heroin' is synthesized by :
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2019 (3 sets)
- A. methylation of morphine
- B. acetylation of morphine
- C. glycosylation of morphine
- D. nitration of morphine
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Q153
BIOLOGY
Unit 7: Genetics and Evolution
In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place ?
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2019 (3 sets)
- A. Directional Selection
- B. Stabilizing Selection
- C. Disruptive Selection
- D. Cyclical Selection
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Q154
BIOLOGY
Unit 4: Plant Physiology
Conversion of glucose to glucose-6-phosphate, the first irreversible reaction of glycolysis, is catalyzed by :
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- A. Aldolase
- B. Hexokinase
- C. Enolase
- D. Phosphofructokinase
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Q155
BIOLOGY
Unit 5: Human Physiology
Which of the following statements is correct ?
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2019 (4 sets)
- A. Cornea is an external, transparent and protective proteinacious covering of the eye-ball.
- B. Cornea consists of dense connective tissue of elastin and can repair itself.
- C. Cornea is convex, transparent layer which is highly vascularised.
- D. Cornea consists of dense matrix of collagen and is the most sensitive portion of the eye.
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Q156
BIOLOGY
Unit 10: Ecology and Environment
Which of the following ecological pyramids is generally inverted ?
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2019 (4 sets)
- A. Pyramid of numbers in grassland
- B. Pyramid of energy
- C. Pyramid of biomass in a forest
- D. Pyramid of biomass in a sea
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Q157
BIOLOGY
Unit 3: Cell Structure and Function
Consider the following statements : (A) Coenzyme or metal ion that is tightly bound to enzyme protein is called prosthetic group. (B) A complete catalytic active enzyme with its bound prosthetic group is called apoenzyme.
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2019 (3 sets)
- A. Both (A) and (B) are true.
- B. (A) is true and (B) is false.
- C. Both (A) and (B) are false.
- D. (A) is false and (B) is true.
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Q158
BIOLOGY
Unit 5: Human Physiology
Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to:
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2019 (3 sets)
- A. benign growth on mucous lining of nasal cavity.
- B. inflammation of bronchi and bronchioles.
- C. proliferation of fibrous tissues and damage of the alveolar walls.
- D. reduction in the secretion of surfactants by pneumocytes.
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Q159
BIOLOGY
Unit 6: Reproduction
Which one of the following statements regarding post-fertilization development in flowering plants is incorrect?
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2019 (3 sets)
- A. Ovary develops into fruit
- B. Zygote develops into embryo
- C. Central cell develops into endosperm
- D. Ovules develop into embryo sac
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Q160
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Phloem in gymnosperms lacks:
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2019 (2 sets)
- A. Albuminous cells and sieve cells
- B. Sieve tubes only
- C. Companion cells only
- D. Both sieve tubes and companion cells
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Q161
BIOLOGY
Unit 4: Plant Physiology
It takes very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?
↻ Repeated question — also appeared in
2019 (3 sets)
- A. Auxin and Ethylene
- B. Gibberellin and Cytokinin
- C. Gibberellin and Abscisic acid
- D. Cytokinin and Abscisic acid
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Q162
BIOLOGY
Unit 6: Reproduction
Persistent nucellus in the seed is known as:
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2019 (2 sets)
- A. Chalaza
- B. Perisperm
- C. Hilum
- D. Tegmen
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Q163
BIOLOGY
Unit 3: Cell Structure and Function
Cells in G0 phase:
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2019 (3 sets)
- A. exit the cell cycle
- B. enter the cell cycle
- C. suspend the cell cycle
- D. terminate the cell cycle
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Q164
BIOLOGY
Unit 1: Diversity in Living World
Match Column - I with Column - II. (a) Saprophyte (i) Symbiotic association of fungi with plant roots (b) Parasite (ii) Decomposition of dead organic materials (c) Lichens (iii) Living on living plants or animals (d) Mycorrhiza (iv) Symbiotic association of algae and fungi
- A. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
- B. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
- C. (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
- D. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
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Q165
BIOLOGY
Unit 5: Human Physiology
What would be the heart rate of a person if the cardiac output is 5L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?
↻ Repeated question — also appeared in
2019 (3 sets)
- A. 50 beats per minute
- B. 75 beats per minute
- C. 100 beats per minute
- D. 125 beats per minute
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Q166
BIOLOGY
Unit 9: Biotechnology and Its Applications
What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?
↻ Repeated question — also appeared in
2019 (2 sets)
- A. Body temperature
- B. Moist surface of midgut
- C. Alkaline pH of gut
- D. Acidic pH of stomach
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Q167
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in:
↻ Repeated question — also appeared in
2019 (3 sets)
- A. Bile duct and Bronchioles
- B. Fallopian tubes and Pancreatic duct
- C. Eustachian tube and Salivary duct
- D. Bronchioles and Fallopian tubes
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Q168
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the statements given below is not true about formation of Annual Rings in trees?
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2019 (3 sets)
- A. Annual ring is a combination of spring wood and autumn wood produced in a year.
- B. Differential activity of cambium causes light and dark bands of tissue - early and late wood respectively
- C. Activity of cambium depends upon variation in climate.
- D. Annual rings are not prominent in trees of temperate region.
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Q169
BIOLOGY
Unit 6: Reproduction
What is the fate of the male gametes discharged in the synergid?
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2019 (4 sets)
- A. One fuses with the egg, other(s) degenerate(s) in the synergid.
- B. All fuse with the egg.
- C. One fuses with the egg, other(s) fuse(s) with synergid nucleus.
- D. One fuses with the egg and other fuses with central cell nuclei.
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Q170
BIOLOGY
Unit 7: Genetics and Evolution
Match the following genes of the Lac operon with their respective products. (a) i gene (i) b-galactosidase (b) z gene (ii) Permease (c) a gene (iii) Repressor (d) y gene (iv) Transacetylase
↻ Repeated question — also appeared in
2019 (2 sets)
- A. (a)-(iii), (b)-(i), (c)-(ii), (d)-(iv)
- B. (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
- C. (a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)
- D. (a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
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Q170
BIOLOGY
Unit 7: Genetics and Evolution
Match the following genes of the Lac operon with their respective products: (a) i gene (b) z gene (c) a gene (d) y gene. (i) β-galactosidase (ii) Permease (iii) Repressor (iv) Transacetylase
↻ Repeated question — also appeared in
2019 (1 set)
- A. (1) (i) (iii) (ii) (iv)
- B. (2) (iii) (i) (ii) (iv)
- C. (3) (iii) (i) (iv) (ii)
- D. (4) (iii) (iv) (i) (ii)
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Q171
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Select the correct sequence of organs in the alimentary canal of cockroach starting from mouth:
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2019 (3 sets)
- A. Pharynx → Oesophagus → Crop → Gizzard → Ileum → Colon → Rectum
- B. Pharynx → Oesophagus → Gizzard → Crop → Ileum → Colon → Rectum
- C. Pharynx → Oesophagus → Gizzard → Ileum → Crop → Colon → Rectum
- D. Pharynx → Oesophagus → Ileum → Crop → Gizzard → Colon → Rectum
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Q172
BIOLOGY
Unit 7: Genetics and Evolution
Match the hominids with their correct brain size: (a) Homo habilis (b) Homo neanderthalensis (c) Homo erectus (d) Homo sapiens. (i) 900 cc (ii) 1350 cc (iii) 650-800 cc (iv) 1400 cc
↻ Repeated question — also appeared in
2019 (1 set)
- A. (1) (iii) (i) (iv) (ii)
- B. (2) (iii) (ii) (i) (iv)
- C. (3) (iii) (iv) (i) (ii)
- D. (4) (iv) (iii) (i) (ii)
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Q173
BIOLOGY
Unit 5: Human Physiology
Identify the correct pair representing the causative agent of typhoid fever and the confirmatory test for typhoid.
↻ Repeated question — also appeared in
2019 (2 sets)
- A. Plasmodium vivax/UTI test.
- B. Streptococcus pneumoniae/Widal test
- C. Salmonella typhi/Anthrone test
- D. Salmonella typhi/Widal test
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Q174
BIOLOGY
Unit 5: Human Physiology
How does steroid hormone influence the cellular activities?
↻ Repeated question — also appeared in
2019 (3 sets)
- A. Changing the permeability of the cell membrane.
- B. Binding to DNA and forming a gene-hormone complex.
- C. Activating cyclic AMP located on the cell membrane.
- D. Using aquaporin channels as second messenger.
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Q175
BIOLOGY
Unit 5: Human Physiology
Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?
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2019 (3 sets)
- A. 1500 mL
- B. 1700 mL
- C. 2200 mL
- D. 2700 mL
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Q176
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is a commercial blood cholesterol lowering agent?
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2019 (3 sets)
- A. Cyclosporin A
- B. statin
- C. Streptokinase
- D. Lipases
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Q177
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following statements regarding mitochondria is incorrect?
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2019 (3 sets)
- A. Outer membrane is permeable to monomers of carbohydrates fats and proteins.
- B. Enzymes of electron transport are embedded in outer membrane.
- C. Inner membrane is convoluted with infoldings.
- D. Mitochondrial matrix contains single circular DNA molecule and ribosomes.
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Q178
BIOLOGY
Unit 5: Human Physiology
Match the Column - I with Column - II. (a) P-wave (b) QRS complex (c) T-wave (d) Reduction in the size of T-wave. (i) Depolarisation of ventricles (ii) Repolarisation of ventricles (iii) Coronary ischemia (iv) Depolarisation of atria (v) Repolarisation of atria
↻ Repeated question — also appeared in
2019 (3 sets)
- A. (1) (iv) (i) (ii) (iii)
- B. (2) (iv) (i) (ii) (v)
- C. (3) (ii) (i) (v) (iii)
- D. (4) (ii) (iii) (v) (iv)
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Q179
BIOLOGY
Unit 8: Biology and Human Welfare
Select the correct group of biocontrol agents.
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2019 (3 sets)
- A. Bacillus thuringiensis, Tobacco mosaic virus, Aphids
- B. Trichoderma, Baculovirus, Bacillus thuringiensis
- C. Oscillatoria, Rhizobium, Trichoderma
- D. Nostoc, Azospirillium, Nucleopolyhedrovirus
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Q180
BIOLOGY
Unit 1: Diversity in Living World
Select correctly written scientific name of Mango which was first described by Carolus Linnaeus:
↻ Repeated question — also appeared in
2019 (3 sets)
- A. Mangifera indica Car. Linn.
- B. Mangifera indica Linn.
- C. Mangifera indica
- D. Mangifera Indica
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