Q. Select the correct and incorrect statements :

(a) Tapetum nourishes developing pollen grains.
(b) Hilum represents junction between ovule and funicle.
(c) In aquatic plants, Water Hyacinth and Water Lily, pollination is by water.
(d) Primary endosperm nucleus is triploid.

(a) A and B are correct but C and D are wrong.

(b) A, B and D are correct but C is wrong .

(c) B, C and D are correct but A is wrong.

(d) Only A and D are correct but B and C are wrong.

Solution :

Correct Option : B Tapetum

Tapetum is the innermost layer of anther which protects and provides nourishment to the developing pollen.
Hence, the statement in option ‘a’ is correct.

Hilum

Hilum is the scar that represents the site where the funicle fuses with the body of the ovule.
Hence, the statement in option ‘b’ is correct.

Pollination of aquatic plants

Aquatic plants such as water hyacinth and water lily have flowers that emerge out of the water surface and are hence pollinated by wind or insects.
Hence, the statement in option ‘c’ is incorrect.

Primary endosperm nucleus

The primary endosperm nucleus is formed as a result of the fusion between one of the haploid (n) male gametes with the diploid (2n) secondary nucleus of the central cell and is hence triploid (3n) in nature.
Hence, the statement in option ‘b’ is correct.