Life Processes Worksheet-2

Life Processes Worksheet-2

11. Respiration and photosynthesis both require:

A. Green cells                                B. Sunlight

C. Cytochromes                            D. Organic fuel

12. Rate of photosynthesis is independent on:

A. Light quality                             B. Light intensity

C. Duration of light                      D. All of these

13. Which pigment is present universally in all green plants:

A. Chlorophyll a                            B. Chlorophyll b

C. Chlorophyll c                            D. Chlorophyll m

14. Which of the following colours of light in the visible spectrum is the most effective in photosynthesis?

A. Red                 B. Green             C. Violet             D. Yellow

15. In respiration, air passes through

A. Pharynx, nasal cavity, larynx, trachea, bronchi, bronchiole, lungs

B. Nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, lungs

C. Larynx, nasal cavity, pharynx, trachea, lungs

D. Larynx, pharynx, trachea, lungs

16. The exchange of gases in the alveoli of the lungs takes place by

A. Osmosis                                     B. Simple diffusion

C. Passive transport                     D. Active transport

17. The exchange of gases (O₂ and CO₂) in a mammal takes place in

A. Trachea                                     B. Bronchi

C. Bronchioles                               D. Alveoli

18. Which is the first part of the small intestine?

A. Ileum             B. Jejunum       C. Duodenum   D. Caecum

Answer Key:

11. C
12. D
13. A
14. A
15. B
16. B
17. D
18. C