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Name important defence mechanisms in pla...

Name important defence mechanisms in plants against herbivory.

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ALLEN-ORGANISM AND POPULATIONS-Question
  1. A student on a school trip started sneezing and wheezing soon after r...

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

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  3. Name important defence mechanisms in plants against herbivory.

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

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

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

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

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

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

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  10. Define and give one examples of each: Amensalism

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

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

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

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

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

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

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  17. (i) Which of the following A,B,C ,d represent increases and decreases ...

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  18. Write three important characterstics of tropical Rain forest.

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  19. "Analysis of age-pyramids for human population can provide important i...

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  20. (a) List the different attributes that a population has and not an ind...

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