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Question

Pitcher plants feed on insects mainly to meet their requirement of ______ .


  1. Oxygen

  2. Iron

  3. Magnesium

  4. Nitrogen


Solution

The correct option is D

Nitrogen


Pitcher plants usually grow in areas deficient in nitrogen. Nitrogen is an important element required by plants. These plants are green and make their food by photosynthesis but to meet their nitrogen needs, they feed on insects. Hence, they are also referred to as partial parasites.

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