Question

Which of the following is not associated with tapetum?
(1) Nourishment of pollen grains
(2) Dense cytoplasms
(3) Multinucleate
(4) Small nucleus​

Answer 1

Answer:

nourishment of pollen grains

Answer 2

Answer:

Small nucleus is not associated with tapetum.

Explanation:

• The sporogenous tissue is fully encircled by the tapetum, which is the deepest layer. Tapetum cells have rich cytoplasm and typically several nuclei. The pollen grains' development is nourished by tapetum.
• The two-layered cell wall of a pollen grain makes it up. One of the most resilient biological materials known as sporopollenin makes up the outer, tougher layer known as exine. The intine is the inner layer.
• Sporogenous tissue is a collection of uniform cells found in young anthers. It's a diploid. Each sporogenous cell differentiates into a mother cell for the microspores, which go through meiosis to produce four haploid microspores.
• The wall of the microsporangium contains endothecium close to the epidermis. At maturity, the endothecium produces hygroscopic fibrous thickenings that aid in the dehiscence of another cell.