Across
- 2. A protective layer that covers the outermost tissue layer of a plant leaf.
- 3. A diagram that shows the biomass at each trophic level. It is always a pyramid shape. Trophic level 1 is at the bottom of the pyramid.
- 11. A plant tissue that contains large air spaces and has a large surface area for diffusion.
- 12. A cell which controls the opening and closing of the stomata.
- 13. A description of the position of an organism within the food chain.
- 16. A carbohydrate made by plants to store glucose.
- 19. An endothermic reaction in which energy is transferred from the environment to chloroplasts by light. It is represented by the equation: carbon dioxide + water glucose + oxygen
- 21. Respiration that takes place without oxygen to transfer energy. In muscles it is represented by the equation: glucose lactic acid In plant and yeast cells it is represented by the equation: glucose ethanol + carbon dioxide
- 23. A representation of the feeding relationships within a community.
- 24. A plant tissue that contains lots of chloroplasts to carry out photosynthesis.
Down
- 1. A green pigment inside chloroplasts which absorbs light energy.
- 4. A structure in plant cells that contains the pigment chlorophyll which absorbs light so the plant can carry out photosynthesis.
- 5. Respiration that involves the use of oxygen to transfer energy. It is represented by the equation: glucose + oxygen carbon dioxide + water
- 6. Small openings in the surface of a leaf that allow gases to diffuse in and out of the leaf.
- 7. Drooping through lack of water.
- 8. Enlarged and swollen with water.
- 9. A yellow liquid that changes colour to dark blue/black in the presence of starch
- 10. The process of breaking down sugars by anaerobic respiration in bacteria or yeast, important in the manufacture of bread and alcoholic drinks.
- 14. The amount of extra oxygen the body needs after exercise to react with the accumulated lactic acid and remove it from the cells.
- 15. A structure inside cells where aerobic respiration occurs; a process which releases energy for the cell.
- 17. The waste product of anaerobic respiration in muscles.
- 18. The mass of living material of an organism. This will include all of the proteins, carbohydrates and lipids that make up that organism. It does not include the water content.
- 20. A diagram that shows the total number of individual organisms at each trophic level.
- 22. Tired.