Chapter 1: The Living World — Online MCQ Test
BIOLOGY · Grade 11 · CBSE(NCERT)
Practice Chapter 1: The Living World with a free chapter-wise online MCQ test.
This chapter covers: Living Organisms Biodiversity Taxonomy Systematics Classification Species Genus Family Order Kingdom Binomial Nomenclature.
AI-generated questions from basic to board-exam level, with instant results and explanations.
Chapter 1: The Living World — Important Questions & Answers
Which of the following is the most basic unit of classification in biology?
- A. Family
- B. Species
- C. Genus
- D. Order
Answer: B. Species
Species is the basic unit of classification. It refers to a group of similar organisms that can interbreed and produce fertile offspring.
Species is the basic unit of classification. It refers to a group of similar organisms that can interbreed and produce fertile offspring.
The science that deals with the identification, nomenclature, and classification of organisms is called:
- A. Ecology
- B. Anatomy
- C. Taxonomy
- D. Physiology
Answer: C. Taxonomy
Taxonomy is the branch of biology concerned with identifying, naming, and classifying organisms.
Taxonomy is the branch of biology concerned with identifying, naming, and classifying organisms.
Who is known as the father of taxonomy?
- A. Charles Darwin
- B. Gregor Mendel
- C. Carolus Linnaeus
- D. Robert Hooke
Answer: C. Carolus Linnaeus
Carolus Linnaeus is called the father of taxonomy because he laid the foundation of modern classification and binomial nomenclature.
Carolus Linnaeus is called the father of taxonomy because he laid the foundation of modern classification and binomial nomenclature.
In binomial nomenclature, the first word of the scientific name represents the:
- A. Species
- B. Family
- C. Genus
- D. Order
Answer: C. Genus
The first word in a binomial name denotes the genus, while the second word is the specific epithet.
The first word in a binomial name denotes the genus, while the second word is the specific epithet.
A scientist finds an unknown plant and first groups it according to similarities with known plants. This activity is most directly related to:
- A. Classification
- B. Digestion
- C. Photosynthesis
- D. Respiration
Answer: A. Classification
Classification is the process of grouping organisms based on similarities and differences.
Classification is the process of grouping organisms based on similarities and differences.
Which of the following best describes the term 'biodiversity'?
- A. The number of bones in an organism
- B. The variety of living organisms present in an area
- C. The classification of animals only
- D. The movement of organisms in an ecosystem
Answer: B. The variety of living organisms present in an area
Biodiversity refers to the variety of living organisms in a region or on Earth as a whole.
Biodiversity refers to the variety of living organisms in a region or on Earth as a whole.
Which taxonomic rank is correctly placed between family and genus?
- A. Class
- B. Order
- C. Species
- D. Kingdom
Answer: B. Order
The order is a higher rank than family and lower than class. In the sequence, family comes above genus, and order comes above family.
The order is a higher rank than family and lower than class. In the sequence, family comes above genus, and order comes above family.
If two organisms belong to the same genus but different species, they will definitely have:
- A. The same scientific name
- B. The same specific epithet
- C. A similar set of characters but not identical reproductive isolation
- D. Belong to different families
Answer: C. A similar set of characters but not identical reproductive isolation
Organisms of the same genus are closely related and share many characters, but different species are distinct and generally reproductively isolated.
Organisms of the same genus are closely related and share many characters, but different species are distinct and generally reproductively isolated.
Which of the following is the most appropriate scientific name formatting for writing by hand?
- A. Homo sapiens underlined separately
- B. Homo sapiens both words underlined together
- C. homo sapiens underlined together
- D. Homo Sapiens not underlined
Answer: A. Homo sapiens underlined separately
When handwritten, the genus and species names are written separately and underlined separately. In print, they are italicized.
When handwritten, the genus and species names are written separately and underlined separately. In print, they are italicized.
A student says: 'If two organisms have different families, they must also belong to different orders.' Which is correct?
- A. Always true
- B. Always false
- C. Not necessarily true, because different families can belong to the same order
- D. False, because family is above kingdom
Answer: C. Not necessarily true, because different families can belong to the same order
An order can include multiple families. Therefore, organisms in different families may still belong to the same order.
An order can include multiple families. Therefore, organisms in different families may still belong to the same order.