Q1
mcq
Match the following : (1)Exonuclease (i)add or remove phosphate (2)Endonuclease (ii)binding the DNA fragments (3)Alkaline Phosphatase (iii)cut the DNA at terminus (4)Ligase (iv)cut the DNA at middle
- A. (1)-(i), (2)-(iii), (3)-(ii), (4)-(iv)
- B. (1)-(i), (2)-(ii), (3)-(iii), (4)-(iv)
- C. (1)-(iii), (2)-(iv), (3)-(i), (4)-(ii)
- D. (1)-(iii), (2)-(iv), (3)-(ii), (4)-(i)
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Q2
mcq
The phenotypic ratio of complementary genes :
- A. 9 : 7
- B. 9 : 3 : 3 : 1
- C. 9 : 3 : 4
- D. 9 : 6 : 1
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Q3
mcq
‘‘ The Father of Indian Green Revolution’’ is :
- A. Dr. M.O. Parthasarathy
- B. Dr. Verghese Kurien
- C. Dr. M.S. Swaminathan
- D. Dr. M.S. Sabarinathan
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Q4
mcq
Which one of the following is the first cell of female gametophyte ?
- A. Microspore
- B. Primary endosperm Nucleus
- C. Nucleus
- D. Functional megaspore
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Q5
mcq
Depletion of __________ gas in the atmosphere can lead to an increased incidence of skin cancer.
- A. Nitrous oxide
- B. Ammonia
- C. Ozone
- D. Methane
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Q6
mcq
In soil, water available for plants is :
- A. Capillary water
- B. Gravitational water
- C. Hygroscopic water
- D. Chemically bound water
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Q7
mcq
Groundnut is native of __________.
- A. North America
- B. Philippines
- C. Brazil
- D. India
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Q8
mcq
Tamarindus indica is indigenous to :
- A. South America, Greece
- B. Tropical African region
- C. India alone
- D. South India, Sri Lanka
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Q9
mcq
Solidifying agent used in plant tissue culture is :
- A. EDTA
- B. Nicotinic acid
- C. Agar
- D. Cobaltous chloride
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Q11
mcq
Which one of the following represents the flow of genetic information ?
- A. RNA → Protein → DNA
- B. DNA → RNA → Protein
- C. Protein → RNA → DNA
- D. RNA → DNA → Protein
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Q12
mcq
“Gametes are never hybrid”. This is a statement of :
- A. Law of Segregation
- B. Law of Dominance
- C. Law of Random Fertilization
- D. Law of Independent Assortment
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Q14
mcq
Ruminate endosperm is found in :
- A. Vallisneria
- B. Cocos
- C. Arachis
- D. Areca catechu
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Q15
mcq
Pedogenesis refers to :
- A. Population
- B. Fossils
- C. Water
- D. Soil
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Q17
short answer
2 marks
Give the names of the scientists who rediscovered Mendelism.
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Q18
short answer
2 marks
What is intragenic gene interaction ? Classify gene interaction.
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Q24
short answer
2 marks
Which of the two phenomena are considered as inherent capacities of living plant cell ?
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Q25
short answer
3 marks
Differentiate Grafting and Layering.
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Q26
short answer
3 marks
Draw diagram of different types of aneuploidy.
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Q27
short answer
3 marks
What is meant by Capping and Tailing ?
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Q28
short answer
3 marks
Write the benefits and risks of Genetically modified food.
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Q29
short answer
3 marks
What are the objectives of afforestation ?
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Q30
short answer
3 marks
What is Ecological Hierarchy ? Name the levels of Ecological hierarchy.
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Q31
short answer
3 marks
How are microbial innoculants used to increase the soil fertility ?
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Q32
short answer
3 marks
Pyramid of energy is always upright. Give reasons.
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Q33
short answer
3 marks
Differentiate Embryoids and Artificial Seeds.
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Q33
long answer
5 marks
Draw the structure of ovule and label it.
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Q34
long answer
5 marks
Write the significance of plant succession.
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Q35
long answer
5 marks
Bring out the inheritance of chloroplast gene with example.
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Q37
long answer
5 marks
Mention the applications of Bio-Technology.
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Q38
long answer
5 marks
Explain the steps involved in Protoplast Culture.
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Q39
long answer
5 marks
Suggest a solution to water crisis and explain its advantages.
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Q40
long answer
5 marks
Explain different types of Hydrophytes with examples.
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Q41
long answer
5 marks
List out the new breeding techniques involved in developing new traits in plant breeding.
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Q42
long answer
5 marks
Write the economic importance of Rice and Teak.
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