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1. Plants make food by --------------. (lesson 24a)
2. Complete the equation: carbon dioxide + water + sunlight -->? (24a)
3. In the reaction above what is the green substance that traps light energy? (24a)
4. Which cells in a plant contain many chloroplasts? (24b)
5. How do gases get in and out of leaves? (24b)
6. What elements do NPK fertlilisers give to plants? (24c)
7. Which element helps plants to produce healthy leaves? (24c)
8. What breaks down animal waste in the soil? (24c)
9. Which parts of a plant take in water from the soil? (24c)
10. How does water get to the leaves of a plant? (24d)
11. Plants lose water by ----------- from their leaves. (24d)
12. What is the name of a) the male parts and b) the female parts of a flower? (24e)
13. What is inside a) the ovary, b) the anther? (24e)
14. What are the 2 ways that pollen is transferred? (24e)
15. After fertilistion when a pollen nucleus joins with an ovule, the ovule grows into a ----. (24f)

ANSWERS

1. Photosynthesis.
2. Sugar + oxygen.
3. Chlorophyll.
4. Palisade cells.
5. By diffusion through air holes.
6. Nitrogen, phosphorus, potassium.
7. Potassium.
8. Bacteria.
9. The root hairs.
10. It passes through tiny tubes called xylem.
11. Evaporation.
12. a) Stamens. b) Carpels.
13. a) Ovules b) Pollen grains.
14. By insects or by the wind.
15. Seed.