Across
- 4. Chemical component of food which are used for growth and repair of the body
- 5. Organism which can make their own food
- 6. The process bywhich green plants prepare their own food
Down
- 1. the product of photosynthesis
- 2. green pigment necessary for preparation of food via photosynthesis
- 3. ultimate source of energy
- 4. mode by which organism takes food and utilises it