Across
- 1. dioxide a gas that is taken in by a plant to let out oxygen is known as....
- 4. organisms that live in or on other living organisms and derive their food from them
- 5. the cells of green leaves and young stems of plants containing numerous which is known as....
- 6. a green pigment present in the leaf
Down
- 2. plants plants that depend on others for their food
- 3. plants plants that make their own food