Class XI Biology – Chapter 1: The Living World

## Class XI Biology – Chapter 1: The Living World

**Time:** 45 Minutes

**Maximum Marks:** 25

### Section A – Objective Questions

**15 × 1 = 15 Marks**

**Choose the correct answer:**

1. The basic unit of classification is:

   a) Genus

   b) Species

   c) Family

   d) Order

2. The branch of biology concerned with identification, nomenclature and classification is:

   a) Ecology

   b) Taxonomy

   c) Physiology

   d) Anatomy

3. Who is known as the Father of Taxonomy?

   a) Charles Darwin

   b) Carolus Linnaeus

   c) Robert Hooke

   d) Aristotle

4. The scientific name of humans is:

   a) Homo erectus

   b) Homo sapiens

   c) Homo habilis

   d) Australopithecus

5. In binomial nomenclature, the first word represents:

   a) Species

   b) Family

   c) Genus

   d) Order

6. Which of the following is an example of a taxonomic category?

   a) Herbarium

   b) Genus

   c) Flora

   d) Key

7. A collection of dried, pressed and preserved plant specimens is called:

   a) Museum

   b) Herbarium

   c) Botanical garden

   d) Zoological park

8. A taxonomic key is mainly used for:

   a) Measuring organisms

   b) Identification of organisms

   c) Preserving organisms

   d) Growing organisms

9. Which one is a characteristic feature of living organisms?

   a) Growth

   b) Crystallisation

   c) Rusting

   d) Melting

10. The ability of an organism to sense and respond to environmental stimuli is called:

    a) Reproduction

    b) Consciousness

    c) Growth

    d) Metabolism

11. The taxonomic category immediately above genus is:

    a) Species

    b) Family

    c) Order

    d) Class

12. Which of the following is **not** a taxonomic aid?

    a) Herbarium

    b) Museum

    c) Taxonomic key

    d) Microscope

13. Botanical gardens are useful for:

    a) Preserving living plant collections

    b) Preserving only dead animals

    c) Studying only microorganisms

    d) Measuring rainfall

14. The correct sequence of taxonomic categories from lower to higher is:

    a) Species → Genus → Family → Order

    b) Genus → Species → Family → Order

    c) Family → Genus → Species → Order

    d) Species → Family → Genus → Order

15. Which scientific name is correctly written according to binomial nomenclature?

    a) homo Sapiens

    b) Homo Sapiens

    c) Homo sapiens

    d) homo sapiens

### Section B – Short Answer Questions

**5 × 2 = 10 Marks**

16. Define **taxonomy**. Mention any one of its important functions.

17. What is **binomial nomenclature**? Give one example.

18. Differentiate between **genus and species**.

19. What is a **taxonomic key**? How is it useful in identification?

20. Explain any **two characteristics of living organisms**.

**Total = 25 Marks**