Photosynthesis

Question 1

What do plants take in

Answer 1

• carbon dioxide from the air through pores called stomata

- water from the soil through root hairs

Question 2

Equation for photosynthesis

Answer 2

carbon dioxide + water = glucose + oxygen

6CO^2 + 6H^20 = C^6H^12O^6 + 60^2

Question 3

Substance used to help photosynthesis

Answer 3

chlorophyll

Question 4

What do plants make in photosynthesis

Answer 4

• FOOD: this is glucose, a carbohydrate. Some is used for respiration in cells. The rest in converted to other substances and stored in the plant
• OXYGEN: this is a waste gas. Some is used for respiration in the plant’s cells. The rest is given off through the stomata into the plant’s surroundings.

Question 5

What can glucose be converted into

Answer 5

• Sucrose: stored in fruit
• Fats and Oils: food store and growth
• Proteins: for growth and repair
• Cellulose: to form cell walls
• Starch: food store

Question 6

How is glucose stored

Answer 6

• starch can be converted back into glucose for respiration in plant cells
• starch is insoluble and so will not dissolve in water and flow out of the cells where it is stored
• starch does not affect the water concentration inside the cells

Question 7

Photosynthesis in DAYTIME

Answer 7

• Plants photosynthesis at a faster rate than they respire
• Take in more CO^2
• Release extra 0^2

Question 8

Photosynthesis in NIGHTTIME

Answer 8

• Plants respire but do not photosynthesis
• Take in 0^2
• Release waste C0^2