An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme

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1.Sexual Reproduction in Flowering Plants

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An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

cuticle

sporopollenin

lignin

cellulose.

(AIPMT-2012)

Solution

(b) : Sporopollenin is a major component of the tough outer (exine) walls of spores and pollen grains. It is chemically very stable and is usually well preserved in soils and sediments. It can withstand environmental extremes and cannot be degraded by enzymes and strong chemical reagents.

Standard 12

Biology

Describe the process of Microsporogenesis.

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In anther culture, some diploid plants were reported with haploids. They have evolved from

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Identify the structures marked $A$ to $F$ in the given diagram

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Examine the figure given below and select the right option giving all the four parts $a, b, c$ and $d.$ Correctly identify

$a\quad \;b\quad\;c\quad\;d$

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The germpores on the pollen grains are found on the

medium

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

Solution

Similar Questions

Describe the process of Microsporogenesis.

In anther culture, some diploid plants were reported with haploids. They have evolved from

Identify the structures marked $A$ to $F$ in the given diagram

Examine the figure given below and select the right option giving all the four parts $a, b, c$ and $d.$ Correctly identify $a\quad \;b\quad\;c\quad\;d$

The germpores on the pollen grains are found on the

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Examine the figure given below and select the right option giving all the four parts $a, b, c$ and $d.$ Correctly identify

$a\quad \;b\quad\;c\quad\;d$