SaraNextGen.Com


Study the following statements and choose the correct option.

I – Tapetum nourishes the developing pollen grains.

II- Hilum represents the junction between ovule and funicle

III– In aquatic plants such as water hyacinth and water lily, pollination is by water.

IV- The primary endosperm nucleus is tripoid.

a)

I and II are correct but III and IV are incorrect

b)

I, II and IV are correct but III is incorrect

c)

II, III and IV are correct but I is incorrect

d)

I and IV are correct but II and III are incorrect


Question ID - 6946 | Toppr Answer

Study the following statements and choose the correct option.

I – Tapetum nourishes the developing pollen grains.

II- Hilum represents the junction between ovule and funicle

III– In aquatic plants such as water hyacinth and water lily, pollination is by water.

IV- The primary endosperm nucleus is tripoid.

a)

I and II are correct but III and IV are incorrect

b)

I, II and IV are correct but III is incorrect

c)

II, III and IV are correct but I is incorrect

d)

I and IV are correct but II and III are incorrect

1 Answer - 5876 Votes

3537

Answer Key : (b) -

(b)

The innermost wall layer of microporangium is the tapetum. Cells of tapetum possess dense cytoplasm and generally have more than one nucleus. Tapetum nourishes the developing pollen grains.

The body of the ovule fuses with funicle (stalk of ovule) in the region called hilum. Thus, hilum represents the junction between ovule and funicle.

The primary endosperm nucleus is triploid (3) as it is the product of triple fusion

In majority of aquatic plants such as water hyacinth and water lily, the flower emerge above the level of water and are pollinated by insects or wind as in most of the land plants.



SaraNextGen