Across
- 3. Organisms that can make their food from simple non-living substances
- 4. Organisms that directly or indirectly depend on green plants for nutrition
- 5. The mode of nutrition where two different organisms work together for their mutual benafit
Down
- 1. Organisms that live on dead plants and animals and derive their food from them
- 2. Organisms that live in or on other living organisms and derive their food from them