Question

Study the following statements and select 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 waterlity, pollination occurs by water.
(iv) The primary endosperm nucleus is triploid.
A. I and II and 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. II and IV are correct, but I and III are incorrect

Answer 1

Correct Answer - B
The innersmost wall layer of microporangium is the tapetum. Cells of tapetum posses dense cytoplasm and generally have more than one nucleus. Tapetum nourishes the developing pollen grain. 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 (3n) 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.