Across
- 3. The removal from organisms of the waste products of metabolism (chemical reactions in cells including respiration), toxic materials and substances that are in excess of requirements
- 4. The taking in of materials for energy, growth and development. Plants require light, carbon dioxide, water and ions. Animals need organic compounds and ions and usually need water
- 5. The ability to detect or sense stimuli in the internal or external environment and to respond appropriately
- 6. A group of organisms that can reproduce to produce fertile offspring
- 8. The chemical reactions in cells that break down nutrient molecules and release energy for metabolism
- 9. An action by an organism or part of an organism causing a change of position or place
Down
- 1. The process that make more of the same kind of organism
- 2. An internationally agreed system in which the scientific name of an organism is made up of two parts: the genus and the species
- 7. A permanent increase in size and dry mass by an increase in cell number or cell size, or both