B8 - Photosynthesis

Question 1

Function of Guard cells

Answer 1

allows the exchange of gases (CO2 in / O2 out)

Question 2

Function of stomata

Answer 2

reduces the distance for CO2 to diffuse into the leaf absorbs sunlight guard cells phloem tubes

Question 3

Function of chlorophyll

Answer 3

absorbs sunlight

Question 4

Function of phloem tubes

Answer 4

transports food in the plant

Question 5

Function of xylem tubes

Answer 5

transports water in the plant

Question 6

Function of thin shape

Answer 6

change shape to open and close the stomata

Question 7

What is Photosynthesis?

Answer 7

Photosynthesis is the process by which plants make food using carbon dioxide, water and light.

Question 8

When does Photosynthesis occur? Why?

Answer 8

Photosynthesis only occurs during the day because plants need light

Question 9

What layer of the leaf does most photosynthesis occur in?

Answer 9

Spongy mesophyll

Question 10

How does the rate of photosynthesis change as the distance of the lamp is increased?

Answer 10

The rate of photosynthesis is slowed down as the lamp gets further away.
This is because the plant needs light to photosynthesise.

Question 11

Name the process that produced starch.

Answer 11

Photosynthesis

Question 12

Some of the glucose produced in photosynthesis is converted to starch.

Name three other products that glucose can be converted into in a plant.

Answer 12

Protein/amino acids, Lipids, Cellulose

Question 13

Explain why the plant stores glucose as starch.

Answer 13

Converts to insoluble starch for storage

Question 14

Why do animals have to eat plants or other animals?

Answer 14

Because they can’t produce their own food

Question 15

Why is sunlight necessary for photsynthesis?

Answer 15

For cells to live and grow