Unit 2 : Photosynthesis

Question 1

How do plants differ from animals?

Answer 1

Plants can produce their own food through photosynthesis.

Question 2

Photosynthesis is an endothermic process. What does this mean?

Answer 2

Takes in heat.

Question 3

What 2 substances does photosynthesis combine to form sugar?

Answer 3

• water from the soil
• carbon dioxide from the

Question 4

What gas is given off as a by-product?

Answer 4

oxygen

Question 5

Where does the energy come from, needed to drive the process?

Answer 5

the sunlight

Question 6

Where is the sunlight trapped?

Answer 6

in the green pigment chlorophyll

Question 7

Complete the word equation for photosynthesis.

____ _____+ _____ = _____ + ______

Answer 7

carbon dioxide + water = glucose + oxygen

*light is needed to produce glucose + oxugen

Question 8

What ways can the glucose produced in photosynthesis be used by the plant?

Answer 8

RESPIRATION - to make energy

STORAGE - convert into starch

other useful substances
- cellulose (cell wall)
- chlorophyll
- protein