Y10 Plants, Photosynthesis and Start of Ecology

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Across
  1. 3. chemical that strengthens the the xylem
  2. 6. a line used to study the distribution of organisms across a habitat
  3. 7. green pigment that absorbs sunlight in photosynthesis.
  4. 9. holes found in the bottom (and top) of leaves that open and close.
  5. 11. an instrument that can be used to measure rate of transpiration
  6. 12. a characteristic that helps an organism survive in its environment.
  7. 15. hollow tube made of dead cells. water is transported in this.
  8. 17. movement of water from roots to stem and out of leaves
  9. 18. the struggle between organisms for limited resources or for territory/a mate.
  10. 22. all the various organisms that live in a certain ecosystem
  11. 23. a square frame used to sample plants or slow animals.
  12. 24. the way organisms rely on each other for survival.
  13. 25. insoluble carbohydrate. Glucose produced in photosynthesis is often stored by the plant as this.
Down
  1. 1. a non living factor in an ecosystem e.g. soil pH
  2. 2. a living factor in an ecosystem e.g. presence of new predators
  3. 4. the total number of one species in a particular ecosystem.
  4. 5. photosynthesis is a chemical reaction that takes in energy. It is therefore a type of ...... reaction.
  5. 8. an organism that can survive in very hostile conditions.
  6. 10. in photosynthesis, the factor that determines how big the rate is is called the ....... factor.
  7. 13. non hollow tube in plant - sugars are transported in this
  8. 14. the stomata open and close due these .... cells, which swell up.
  9. 16. the layer of the leaf with many cells arranged close together. These cells have many chloroplasts; ..... mesophyll.
  10. 19. this gas is a product of photosynthesis. The bubbles from the pondweed are this gas.
  11. 20. root.... cells, specialised plant cells that are adapted to absorb water and minerals from the soil
  12. 21. the top of a leaf has a thin waxy ....