PHOTOSYNTHESIS-GRADE 7

1. What are the 3 reactants of photosynthesis? The reactants are the things needed for photosynthesis to occur.

• water, oxygen, glucose

• water, carbon dioxide, sunlight

• carbon dioxide, oxygen, sunlight

2. What pigment captures/absorbs sunlight?

• chloroplast

• chlorophyll

• xanthines

3. What is the tiny openings that let in the carbon dioxide needed for photosynthesis?

• pores

• stomata

• guard pores

4. What is not the main purpose of photosynthesis?

• to make food

• to make oxygen

• to make cells

5. Which product is "waste" and mostly released by the producer (plant)?

• oxygen

• nitrogen

• water vapour

6 The tissue in a leaf where most photosynthesis takes palce is called......

• spongy layer

• palisade layer

• stomata

7. Carbohydrates are stored in plants as

• fructose

• starch

• maltose

8. Stomata is present on the ................. surface of the leaf

• lower

• upper

• middle

9. Water is transported with the help of ..........

• xylem

• phloem

• air space

10. What is the source of energy for plant photosynthesis?

• sun

• water

• carbon dioxide