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The inner wall of pollen grain- a) Is ...

The inner wall of pollen grain-
a) Is thin, continuous and pecto cellulosic and is called intine
b) Comes out in the form of pollen tube through germpore
c) Is thick and consists of sporopollenin
d) a and b

A

Is thin, continuous and pecto cellulosic and is called intine

B

Comes out in the form of pollen tube through germpore

C

Is thick and consists of sporopollenin

D

a and b

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the inner wall of the pollen grain, we need to analyze each of the provided statements carefully. ### Step-by-Step Solution: 1. **Understanding the Structure of Pollen Grain**: - Pollen grains consist of two main layers: the outer layer called exine and the inner layer called intine. 2. **Analyzing Statement A**: - Statement A claims that the inner wall (intine) is thin, continuous, and made of pectocellulosic material. - This is correct because the intine is indeed thin and composed of pectin and cellulose, which makes it pectocellulosic. 3. **Analyzing Statement B**: - Statement B states that the intine comes out in the form of a pollen tube through the germ pore. - This is also true. The pollen tube is formed when the intine extends through the germ pore located in the exine. 4. **Analyzing Statement C**: - Statement C claims that the inner wall is thick and consists of sporopollenin. - This statement is incorrect. The inner wall (intine) is not thick and does not consist of sporopollenin; instead, sporopollenin is a component of the outer layer (exine). 5. **Conclusion**: - Since statements A and B are correct, while statement C is incorrect, the correct answer to the question is option D, which states that both A and B are true. ### Final Answer: **The correct option is D) a and b.** ---
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