Photosynthesis

Question 1

What are the reactants of photosynthesis?

Answer 1

Carbon dioxide and water

Question 2

What are the products of photosynthesis?

Answer 2

Glucose and oxygen

Question 3

What else is required for photosynthesis?

Answer 3

Light energy

Question 4

What is light energy absorbed by?

Answer 4

Chlorophyll, a green substance

Question 5

Where is chlorophyll found?

Answer 5

In chloroplasts in some plant cells and algae

Question 6

What is light energy used for?

Answer 6

Converting carbon dioxide and water into sugar

Question 7

What is the by-product of photosynthesis?

Answer 7

Oxygen

Question 8

Where does the carbon dioxide come from?

Answer 8

Air

Question 9

Where does the water come from?

Answer 9

The soil

Question 10

What 3 things can the rate of photosynthesis be limited by?

Answer 10

Shortage of light, low temperature, shortage of carbon dioxide

Question 11

What’s a limiting factor?

Answer 11

One that stops photosynthesis from happening any faster

Question 12

What may some glucose be converted into? Why?

Answer 12

Insoluble starch, for storage

Question 13

What is some of the glucose made in photosynthesis used in?

Answer 13

Respiration

Question 14

Give 3 other ways that glucose can be used

Answer 14

To produce fat or oil for storage, produce cellulose, produce proteins

Question 15

Why is fat or oil produced?

Answer 15

For storage

Question 16

What is the cellulose produced used for?

Answer 16

To strengthen cell walls

Question 17

To make proteins, what do plants also need?

Answer 17

Nitrate ions

Question 18

Where are the nitrate ions absorbed from?

Answer 18

The soil