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Which one of the following is a characte...

Which one of the following is a characteristic feature of cropland ecosystem?

A

Absence of soil organisms

B

Least genetic diversity

C

Absence of weeds

D

Ecological succession

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-ECOSYSTEM-EXERCISE-III (PREVIOUS AIPMT/NEET QUESTIONS)
  1. The primary producers of the deep-sea ecosystem are:

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  2. Which of the following would appear as the pioneer organisms on bare r...

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  3. Which one of the following is a characteristic feature of cropland eco...

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  4. The term ecosystem was coined by

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  5. Most animals that live in deep oceanic waters are :

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  6. An association of individuals of different species living in the same ...

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  7. Increase in concentration of the toxicant at successive trophic levels...

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  8. Correct IUPAC name of

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  9. The following graph depicts changes in two populations A and B of herb...

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  10. Secondary succession takes place on/in :

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  11. In an ecosystem the rate of production of organic matter during photos...

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  12. The mass of living material at a trophic level at a particular time is...

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  13. Vertical distribution of different species occupying different levels ...

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  14. Rachel Carson's famous book "Silent Spring" is related to:

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  15. Match the following and select the correct option

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  16. Secondary productivity is the rate of formation of new organic matter ...

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  17. Which one of the following processes during decomposition is correctly...

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  18. Natural reservoir of phosphorus is :

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  19. Which one of the following is not a gaseous biogeochemical cycle in ec...

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  20. Pheretima and its close relatives derive nourishment from:

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