Question

Read the following statements and identify the wrong pair.

$i$. Intine of pollen grains is made up of sporopollenin
$ii$. Pollen grains are well preserved as fossils because of the presence of sporopollenin
$iii$. Enzymes can degrade the organic material of the pollen grain exine
$iv$. Sporopollenin can withstand high temperatures, strong acids and alkalis.

• A. $iii\text{and}iv$
• B. $ii\text{and}iii$
• C. $i\text{and}ii$
• D. $i\text{and}iii$

Answer 1

The correct option is D $i\text{and}iii$

Pollen grain


Exine, the outer layer of pollen grains, is made up of an organic compound, sporopollenin.
Enzymes do not degrade the organic material of the pollen grain exine.
Sporopollenin makes pollen grain resistant to enzymes, strong acids, alkalis and high temperatures.
The presence of sporopollenin causes pollen grains to be well preserved as fossils.

Final answer
(b) $i\text{and}iii$