2.1 Photosynthesis

Question 1

What does chlorophyll do?

Answer 1

Absorbs the Suns light energy

Question 2

What is the word equation for photosynthesis?

Answer 2

Carbon dioxide + water —> glucose + oxygen

Question 3

What organisms can photosynthesis only be carried out by?

Answer 3

Green plants and algae

Question 4

Explain the 3 step process to photosynthesis

Answer 4

1. Co2 taken in by leaves and water is taken up by the roots
2. The chlorophyll traps the light energy and it is transferred to chemical energy
3. This energy is used to convert the co2 and water into O2 and glucose

Question 5

Name a by product of photosynthesis

Answer 5

Oxygen

Question 6

What is some of the glucose converted into and why?

Answer 6

Starch, because it can be stored

Question 7

Why do we do the iodine test for starch?

Answer 7

To identify the starch in the leaves and show that photosynthesis has occurred

Question 8

What is the positive result of the iodine test for starch?

Answer 8

If starch is present then the iodine solution will turn blue/black

Question 9

What types of leaves have patches of white and green?

Answer 9

Variegated leaves

Question 10

What is the balanced chemical equation for photosynthesis?

Answer 10

6Co2 + 6H2O —> c6h12o6 + 6o2

Question 11

Why is too much light dangerous for the plant?

Answer 11

It damages the plant