1. A species inhabiting different geographical areas is known as
2. Lichen is a composite combination of two organisms.
3. Nitrogen Fixation is carried out primarily by
4. Organisms that depend only on raw plant products are said to be
5. The scientific study of how organisms interact with their environment is called
6. Grassland with scattered tree is known as
7. Dr. Birbal Sahni; a famous Indian botanist is concerned with ________ studies.
8. Plants which grow on saline soils are known as
9. Which of the following organisms fix nitrogen in aquatic ecosystems?
10. Which ecological pyramid can never be inverted
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