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Male Gametophyte

The inner wal...

Question

The inner wall of pollen grain is called ___ and it is made up of _.

A

exine, cellulose

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B

intine, pectin

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C

intine, cellulose and pectin

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D

exine, sporopollenin

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Solution

The correct option is C intine, cellulose and pectin
Intine is the inner wall of the pollen grain. It is made up of cellulose and pectin. It is a thin continuous layer.

Exine is the outer wall of the pollen grain. It is hard and made up of a highly resistant organic substance called sporopollenin.

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Similar questions

Q. Consider the following statements with respect to pollen grains.
(a) Exine is thin, continuous layer made up of cellulose and pectin
(b) Hard outer layer called exine is made of sporopollenin
(c) Sporopollenin is present in germ pores
(d) Exine exhibits a fascinating array of patterns and designs. Of the statements.

Q. Choose the correct statement(s) regarding pollen grains.
I. Pollen grains are the male gametes of the flowering plant.
II. Pollen grain has a prominent two-layered wall.
III. The outer thick wall of pollen grain is called exine and the inner thin wall is called intine.
IV. The hard outer layer called the exine is made up of sporopollenin which is one of the most resistant organic materials known.

Q. Assertion: Pollen grains are well preserved as fossils.
Reason: The outer layer of pollen grains called the exine is made up of sporopollenin.

Q. Assertion :Exine of a pollen grain is made up of sporopollenin which is resistant to high temperature, strong acid or alkali as well as enzymatic degradation. Reason: Sporopollenin is absent in the region of germ pores.

Q. Which among the following statements is correct?
(a) The vegetative cell of pollen grain divides to form the male gametes.
(b) Sporopollenin is absent in the germ pores.
(c) Intine of pollen grains is made up of cellulose and pectin.
(d) Pollen grains represent the male gametophyte.

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Male Gametophyte

Standard XII Biology

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