Plants

7. mineral ions that plants need for healthy growth, and that are added to the soil to help crops grow better
8. a group of chemicals found in living organisms, which includes sugar, starch and cellulose
10. the part of a flower that receives pollen grains during pollination
12. the colourful parts of a flower that help to attract insects
17. the parts of a flower that contain the ovules
19. substances such as nitrate and magnesium, which plants absorb from the soil through their roots, and which they need for healthy growth
20. a tiny hole in the covering of a seed, which allows the seed to absorb water when it germinates
21. tiny grains, produced in the anthers of a flower, which contain the male gametes
23. the tough, protective outer covering of a seed

1. the cell that is formed when a male gamete fuses with a female gamete
2. a mineral salt that plants need to make chlorophyll
3. spread over a wide area
4. the parts of a flower in which pollen is made
5. a type of carbohydrate that is stored inside plant cells
6. a structure that contains seeds; developed from ovaries after fertilisation, and often help the seeds to be spread away from the parent plant
7. the joining together of the nucleus of a male gamete and the nucleus of a female gamete
9. the parts of a flower that contain the female gametes
11. the transfer of a pollen from an anther to a stigma
12. the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
13. plants that germinate, grow, flower, produce seeds and die in less than a year
14. a very young, new organism, which has developed from a zygote
15. a mineral salt that plants need to make protein and chlorophyll
16. structures found inside some kinds of seeds
18. a structure that contains an embryo plant, and food stores to help it to begin to grow into a new plant
22. a sugary substance made by flowers, which attract insects