(C) The pollen grain is surrounded by a two-layered wall. $1$. The outer hard layer is called the exine,which is made up of sporopollenin,one of the m

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(C) The pollen grain is surrounded by a two-layered wall. $1$. The outer hard layer is called the exine,which is made up of sporopollenin,one of the most resistant organic materials known. $2$. The inner wall is called the intine. $3$. The intine is a thin,continuous layer made up of cellulose and pectin. Therefore,the correct option is $C$.

Class 12 Biology Sexual Reproduction in Flowering Plants Stamen, Microsporangium and Pollen Grain

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What is the intine of a pollen grain made of?

A
Sporopollenin
B
Sporopollenin and cellulose
C
Cellulose and pectin
D
Pectin and sporopollenin

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Class 12 Questions

Class 12

Biology Questions

Chapter

Sexual Reproduction in Flowering Plants

Subtopic

Stamen, Microsporangium and Pollen Grain

The middle layers of the microsporangium are located between which of the following layers?

Medium

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Assertion: If pollen mother cells have $42$ chromosomes,the pollen has only $21$ chromosomes.
Reason: Pollens are formed after meiosis in pollen mother cells.

MediumAIIMS 1997

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Pollen grains are well preserved as fossils because of the presence of . . . . . . .

EasyKCET 2026

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Choose the correct option with respect to the function of the germ pore.

Medium

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Select the incorrect option regarding the vegetative cell of a pollen grain.

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What is the intine of a pollen grain made of?

Similar Questions

The middle layers of the microsporangium are located between which of the following layers?

Assertion: If pollen mother cells have $42$ chromosomes,the pollen has only $21$ chromosomes.Reason: Pollens are formed after meiosis in pollen mother cells.

Pollen grains are well preserved as fossils because of the presence of . . . . . . .

Choose the correct option with respect to the function of the germ pore.

Select the incorrect option regarding the vegetative cell of a pollen grain.

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Assertion: If pollen mother cells have $42$ chromosomes,the pollen has only $21$ chromosomes.
Reason: Pollens are formed after meiosis in pollen mother cells.