CLASS 9 LIFE SCIENCE (1ST CHAPTER ) SET2 

WBBSE Life Science – Set 2

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WBBSE Life Science

1st Semester Examination – Set 2

Chapter 1: Life and Its Diversity

30:00
Marks: 20

Group A: Core Biological Concepts

1. Which metabolic process results in a decrease in the dry weight of an organism?

2. The folding of Mimosa pudica leaves upon touching is an example of which life property?

Group B: Origin of Life (Chemogeny)

3. In Miller and Urey’s experiment, which of the following organic compounds was synthesized?

4. Who coined the term ‘Hot Dilute Soup’ to describe the prebiotic sea?

5. What is referred to as a ‘Naked Gene’ in the context of early life?

Group C: Modern Biology & Biodiversity

6. Which algae is used in spaceships to provide oxygen and food?

7. IR8 is a high-yielding variety of which crop?

Group D: Logic & Reasoning

8. Statement: Mutation is a primary source of biodiversity. Is this true?

9. Which best describes ‘Growth’ in living organisms?

10. Eukaryotic cells are estimated to have appeared approximately how many years ago?

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