Sexual Reproduction In Flowering Plants Ques 35
35. Which of the following statements is correct?
[NEET Kar. 2013]
(a) Sporopollenin can withstand high temperatures but not strong acids
(b) Sporopollenin can be degraded by enzymes
(c) Sporopollenin is made up of inorganic materials
(d) Sporopollenin can withstand high temperatures as well as strong acids and alkalis
Show Answer
Answer : d
Hints & Solutions
(d) Pollen grains are generally spherical and a prominent two-layered wall. The hard outer layer called the exine is made up of sporopollenin which is one of the most resistant organic material known. It can withstand high temperatures and strong acids and alkali.
BETA
