B2 - Organisms in the environment

Question 1

Give the equation for photosynthesis

Answer 1

carbon dioxide + water —-(+ light energy)—–> oxygen + glucose (converted into starch if not used)

Question 2

Explain the process of photosynthesis

Answer 2

Carbon dioxide is taken in by the leaves and water is taken by the roots

The chlorophyll in the chloroplasts traps the light energy needed for photosynthesis

This energy is used to convert the carbon dioxide and water into glucose and oxygen is released as a by product

Question 3

What is the test for starch

Answer 3

Iodine

If starch is present the chlorophyll areas turn blue/black