Practice Questions

1.What is photosynthesis?

The process by which plants make glucose using light energy.

2.Which two types of organisms can carry out photosynthesis?

Plants and algae.

3.Where in a plant does photosynthesis mainly occur?

Leaves.

4.Name two raw materials needed for photosynthesis.

Carbon dioxide and water.

5.Name two products of photosynthesis.

Glucose and oxygen.

6.Explain why photosynthesis  happens in leaves rather than roots.

Leaves contain many chloroplasts 

Leaves are adapted to absorb light / gas exchange

7.Explain why photosynthesis is described as an endothermic reaction.

It takes in energy

Energy is taken in from light to make glucose

8.Explain why chloroplasts are found in palisade mesophyll cells.

Palisade cells contain many chloroplasts to carry out photosynthesis

To absorb maximum light for photosynthesis, because these cells are near the top of the leaf

9.Explain why palisade mesophyll cells are located near the top of the leaf.

Top of leaf receives most light 

Increases rate of photosynthesis

10.Explain how a large surface area helps a leaf carry out photosynthesis.

Allows more light to be absorbed 

Increases rate of photosynthesis