Sporopollenin,a chemical substance,is found i | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) exine of pollen grain.Sporopollenin,found in the exine of pollen grains,is one of the most resistant organic materials known. It is highly resista

Vedclass · Accepted Answer

exine of pollen grain

Vedclass · Answer

(B) exine of pollen grain.Sporopollenin,found in the exine of pollen grains,is one of the most resistant organic materials known. It is highly resistant to extreme temperatures,strong acids,and alkali,and no enzyme that degrades sporopollenin is known so far. In contrast,the intine of pollen grains is composed of cellulose and pectin. The endothecium of the anther aids in dehiscence,while the tapetum provides nourishment to the developing pollen grains.

Column-$I$	Column-$II$
$i$. Nutritive layer	$a$. Epidermis
$ii$. Layer with fibrous thickness	$b$. Middle layers
$iii$. Protective layer	$c$. Tapetum
$iv$. Layer that disintegrates in mature anther	$d$. Endothecium

Sporopollenin,a chemical substance,is found in . . . . . .

Similar Questions

In a pollen grain,the smaller cell with dense cytoplasm and a spindle-shaped nucleus is called the ....

In $Capsella$,meiosis takes place during

Generally,how many middle layers are formed in the wall of the anther lobes?

In a microsporangium,which layer is generally having more than one nucleus?

Vedclass Test Series

Exam Paper Generator

Online Exam Module