Question

Match the following columns: (21/2M)
Column A Column B
1. Generative nucleus a. Pollen grains
2. Exine b. Polypetalous
3. Secondary nucleus c. Rough
4. Pollen sac d. Male nuclei
5. Free petals e. Endosperm
f. Gamopetalous

Answer 1

Answer:

1 Generative nucleus-e 2 Exine-c 3 Secondary nucleus-d 4 Pollen sac-a 5 Free Petals-b

Answer 2

Explanation:

$\tt\pink{\underline{Exine}}$

→ It age outer layer of pollen grain and very hard.

→ It age made up of sporopollenin in which is most resistance organic material present in nature .

→Sporopollenin is Resistance to high temperatures stronger acids and alkaline and also to enzyme .