NEET MCQs Practice on Sexual Reproduction in Flowering Plants

Question 281 of 501

📘 CLASS XII

The tapetal cells are generally:

Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.

Question 282 of 501

📘 CLASS XII

Sporopollenin is absent at the:

Pollen grain exine has prominent apertures called germ pores where sporopollenin is absent.

Question 283 of 501

📘 CLASS XII

In which plants does the pollen grain viability last for months?

In some members of Rosaceae, Leguminoseae and Solanaceae, they maintain viability for months.

Question 284 of 501

📘 CLASS XII

The arrangement of microspores in a cluster of four cells is called:

The microspores, as they are formed, are arranged in a cluster of four cells–the microspore tetrad.

Question 285 of 501

📘 CLASS XII

Which part of the pistil contains the ovarian cavity?

Inside the ovary is the ovarian cavity (locule).

Question 286 of 501

📘 CLASS XII

In the 8-nucleate embryo sac, how are the nuclei distributed?

3 cells (egg apparatus) at micropylar end, 3 cells (antipodals) at chalazal end, and 2 polar nuclei in the large central cell.

Question 287 of 501

📘 CLASS XII

Pollination involving the transfer of pollen from the anther to the stigma of the SAME flower is:

Transfer of pollen grains from the anther to the stigma of the same flower... is called autogamy.

Question 288 of 501

📘 CLASS XII

Flowers that do not open at all are termed:

Cleistogamous flowers which do not open at all.

Question 289 of 501

📘 CLASS XII

Which agent is the dominant biotic pollinating agent?

Among the animals, insects, particularly bees are the dominant biotic pollinating agents.

Question 290 of 501

📘 CLASS XII

What is the function of the "coleoptile"?

Epicotyl has a shoot apex and a few leaf primordia enclosed in a hollow foliar structure, the coleoptile.

Sexual Reproduction in Flowering Plants MCQs