Life processes Worksheets

Life Processes Worksheet-1

1. The first step of photosynthesis is :

A. Ionisation of water

B. Attachment of CO₂ to 5-carbon sugar.

C. Excitation of electron of chlorophyll by a photon of light

D. Formation of ATP

2. Pulmonary artery is different from pulmonary vein in having

A. Large lumen                              B. Thick muscular walls

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

Life Processes Worksheet-3

1. Name the term for transport of food from leaves to other parts of plants.

2. Name the two stages of photosynthesis.

3. Name the excretory unit of a kidney

4. Name the respiratory organs of: (i) fish (ii) mosquito (iii) earthworm.

5. Why is nutrition necessary for an organism?

6. What is breathing?