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Draw labelled diagrams of stable and dec...

Draw labelled diagrams of stable and declining age pyramids of human population.

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ALLEN-ORGANISM AND POPULATIONS-Question
  1. List any four techniques where the principle of ex-situ conservation o...

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  2. Koel is clever enough to lay eggs in a Crow's nest. Write the reason f...

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  3. Draw labelled diagrams of stable and declining age pyramids of human p...

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  4. Monarch Butterfly noteaten by predators because of

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  5. A student on a school trip started sneezing and wheezing soon after r...

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  6. Explain why very small animals are rarely found in polar region.

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  7. Name important defence mechanisms in plants against herbivory.

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  8. Distinguish between the following: (a) Hibernation and Aestivation ...

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  9. Write a short note on : (a) Adaptations of desert plants and animals...

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  10. With the help of suitable diagram describe the logistic population gro...

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  11. Define the following terms and give one example for each: (a) Comme...

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  12. What would happen to all the energy fixed by autotrophic organisms, if...

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  13. Write a short note on (a) Behavioural adaptations in animals (b) I...

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  14. Define and give one examples of each: Amensalism

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  15. Read the following statements and select the correct ones. (i) All ...

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  16. How does a detritivore differ from a decomposer ? Explain with an exam...

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  17. How does the study of fossils support evolution ? Explain.

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  18. What does Hardy-Weinberg Principle of equilibrium indicate? List any t...

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  19. How do snails, bears, zooplanktons, fungi and bacteria adapt to condit...

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  20. Draw and explain a logistic curve for a population of density (N) at t...

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