Class 11 Biology MCQ – The Living World - Multiple Choice Questions

1. Which of the following is not considered a characteristic of living organisms?

a) Growth

b) Reproduction

c) Metabolism

d) Luminosity

Answer:

d) Luminosity

Explanation:

Luminosity or brightness is not a fundamental characteristic of living organisms. Growth, Reproduction, and Metabolism are essential life processes.

2. Who introduced the system of binomial nomenclature?

a) Aristotle

b) Charles Darwin

c) Linnaeus

d) Mendel

Answer:

c) Linnaeus

Explanation:

Linnaeus introduced the system of binomial nomenclature, where organisms are given a two-part scientific name.

3. The hierarchy of classification from the largest to smallest group is:

a) Species → Genus → Family → Order → Class → Phylum → Kingdom

b) Kingdom → Phylum → Class → Order → Family → Genus → Species

c) Class → Order → Phylum → Species → Kingdom → Genus → Family

d) Kingdom → Species → Genus → Family → Order → Class → Phylum

Answer:

b) Kingdom → Phylum → Class → Order → Family → Genus → Species

Explanation:

This sequence represents the taxonomic hierarchy from the largest group (Kingdom) to the smallest (Species).

4. Which of the following is a unicellular algae?

a) Spirogyra

b) Ulothrix

c) Chlorella

d) Sargassum

Answer:

c) Chlorella

Explanation:

Chlorella is a unicellular green alga. The others are multicellular.

5. The scientific study of classification is called:

a) Nomenclature

b) Systematics

c) Taxonomy

d) Phylogeny

Answer:

c) Taxonomy

Explanation:

Taxonomy is the scientific study of naming, describing, and classifying organisms.

6. What is the primary basis of classification?

a) Shape

b) Color

c) Evolutionary history

d) Size

Answer:

c) Evolutionary history

Explanation:

Organisms are primarily classified based on their evolutionary history and relationships.

7. The branch of biology that deals with the study of extinct organisms is:

a) Palaeozoology

b) Ethology

c) Cryobiology

d) Sociobiology

Answer:

a) Palaeozoology

Explanation:

Palaeozoology deals with the study of animals that have become extinct.

8. Which is the correct sequence of taxonomic categories?

a) Family → Order → Class

b) Order → Family → Genus

c) Genus → Family → Order

d) Class → Order → Family

Answer:

d) Class → Order → Family

Explanation:

The correct taxonomic sequence is Class, then Order, followed by Family.

9. Viruses are placed in which kingdom?

a) Monera

b) Protista

c) Fungi

d) None of these

Answer:

d) None of these

Explanation:

Viruses are not placed in any kingdom because they are non-living entities outside a host cell.

10. Bacteria are classified under:

a) Fungi

b) Protista

c) Monera

d) Plantae

Answer:

c) Monera

Explanation:

Bacteria belong to the kingdom Monera.

11. The taxonomic category which contains related families is:

a) Genus

b) Order

c) Species

d) Class

Answer:

b) Order

Explanation:

An Order contains related families.

12. Which is the lowest taxonomic category?

a) Family

b) Genus

c) Species

d) Phylum

Answer:

c) Species

Explanation:

Species is the lowest and most specific taxonomic category.

13. Which of the following organisms is multicellular?

a) Amoeba

b) Paramecium

c) Hydra

d) Euglena

Answer:

c) Hydra

Explanation:

Hydra is a multicellular organism, while the rest are unicellular.

14. The book 'Species Plantarum' was written by:

a) Gregor Mendel

b) Robert Hooke

c) Linnaeus

d) Charles Darwin

Answer:

c) Linnaeus

Explanation:

'Species Plantarum' was written by Linnaeus, and it provides the starting point for the nomenclature of plants.

15. Who is known as the father of taxonomy?

a) Charles Darwin

b) Gregor Mendel

c) Linnaeus

d) Robert Hooke

Answer:

c) Linnaeus

Explanation:

Linnaeus is known as the father of taxonomy due to his contributions to classification and nomenclature.

1. Which of the following is not considered a characteristic of living organisms?

Answer:

Explanation:

2. Who introduced the system of binomial nomenclature?

Answer:

Explanation:

3. The hierarchy of classification from the largest to smallest group is:

Answer:

Explanation:

4. Which of the following is a unicellular algae?

Answer:

Explanation:

5. The scientific study of classification is called:

Answer:

Explanation:

6. What is the primary basis of classification?

Answer:

Explanation:

7. The branch of biology that deals with the study of extinct organisms is:

Answer:

Explanation:

8. Which is the correct sequence of taxonomic categories?

Answer:

Explanation:

9. Viruses are placed in which kingdom?

Answer:

Explanation:

10. Bacteria are classified under:

Answer:

Explanation:

11. The taxonomic category which contains related families is:

Answer:

Explanation:

12. Which is the lowest taxonomic category?

Answer:

Explanation:

13. Which of the following organisms is multicellular?

Answer:

Explanation:

14. The book 'Species Plantarum' was written by:

Answer:

Explanation:

15. Who is known as the father of taxonomy?

Answer:

Explanation:

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