Across
- 4. the structural unit of a living thing
- 5. the response of roots and stems towards and against the earth
- 6. living things that depend on other living things for food
- 8. tiny opening under the surface of plant leaves
Down
- 1. the group of similar living things that can reproduce among themselves
- 2. the response of a plant to light
- 3. green plants make their own food in their green plants
- 7. changes in our surrounding that make us respond to them