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What is chemosynthesis? Name a chemosynt...

What is chemosynthesis? Name a chemosynthetic organisms.

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[A] : No any autotrophic bacteria carry out chemosynthesis . [R] : Chemosynthetic bacteria take energy from sun for the synthesis of food .

A : Holophytic protistans are important phytoplanktons and they contibute 80% of the total photosynthesis. R : They lack chemosynthetic nutrition and utilize non sulphur organic compound as the source of electron and proton in carbon assimilation.

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  3. How do morphological and anatomical evidences support organic evolutio...

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  4. What is vestigial organ? How does the presence of vestigial organs sup...

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  5. Describe Lederberg's replica plating experiment to explain genetic bas...

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  6. Who put forward the theory of natural selection? Explain the concept o...

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  7. What are homologous organs? How do they differ from the analogous orga...

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  8. What is organic evolution? Explain how homologous, analogous and vesti...

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  9. What is chemosynthesis? Name a chemosynthetic organisms.

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  10. What is meant by bio-geographical evidence in favour of organic evolut...

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  11. Describe Lamarckism. Explain why is it alternately called the 'Theory ...

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  12. Explain the phenomenon of natural selection as presently understood. M...

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  13. Why are genetic variability essential for a species to survive? Name t...

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  14. Mention any four details that can be inferred about organisms from the...

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  15. Define biogeography. How do Darwin's finches provide the biogeographic...

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  16. What is meant by homologous organs? Taking a suitable example, explain...

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  17. What is meant by analogous organs? Taking a suitable example, explain ...

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  18. How does a population become founder's of a new species?

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  19. How has the study of fossils helped in convincing the scientists that ...

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  20. Write the Oparin and Haldane's hypothesis about the origin of life on ...

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