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Question

In albuminous seeds, food is stored in ______ and in exalbuminous seeds, food is stored in ______.


A

Endosperm, cotyledons

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B

Cotyledons, cotyledons

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C

Cotyledons, endosperm

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D

Endosperm, endosperm

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Solution

The correct option is A

Endosperm, cotyledons


The correct option is A.

Explanations of correct option:

  1. Monocotyledon (single-leaf embryo) seeds are found to be albuminous.
  2. The food is stored in the exalbuminous seeds in two cotyledons.
  3. Hence, the walls of the seeds are thick and provide nourishment to the growing embryo.
  4. The endosperm also helps to provide nourishment to the growing embryo but it does not completely consume during embryo development, hence it acts as the nourishing tissue in seeds.
  5. Whereas in exalbuminous seeds the endosperm gets completely absorbed during the stage of embryo development.

Explanations of incorrect options:

Option B:

  1. Angiosperms (flowering seed-bearing plants) can have two kinds of seed cotyledons.
  2. Cotyledons help to supply nutrients to the growing embryo as the plant can develop into a photosynthetic organism.

Option C:

  1. The endosperm is the nutritional tissue present inside the seeds which helps to provide nourishment to the developing embryo.

Option D:

  1. It is a special tissue that surrounds the embryo.
  2. It provides essential nutrients required for the growing embryo.
  3. It also protects the embryo as it acts as a mechanical barrier between embryo development and germination.

Final answer: In albuminous seeds, food is stored in the endosperm, and in exalbuminous seeds, food is stored in cotyledons.


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