Across
- 4. The gas taken by plants during photosynthesis
- 5. Organisms that directly or indirectly depend on green plants for their food
- 10. Organisms that live on dead plants and animals and derive their food from them
Down
- 1. The mode of nutrition where two different organisms work together for their mutual benefit
- 2. The process of taking in food by an organism and its utilization by the body is called____________________
- 3. The process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water
- 6. A Nitrogen-fixing bacterium that is common in the soil, especially in the root nodules of leguminous plants
- 7. The chloroplast are green because of the presence of a green pigment called __________________
- 8. Organisms that live in or on other living organisms and derive from them
- 9. Organisms that can make their food from simple non-living substance