NEET BIOLOGY

Detailed explanation-1: -In microsporogenesis, the anther primordiums (diploid) dedifferentiate and form diploid sporogenous cells, which will later differentiate as microsporocytes (diploid) that form four microspores (haploid) via meiosis.

Detailed explanation-2: -The process begins with the meiosis of the microsporocyte to form four haploid microspores. The nucleus of each microspore then divides by mitosis to form a two-celled organism, the pollen grain, that contains a tube cell as well as a smaller generative cell. The pollen grain is surrounded by an elaborate cell wall.

Detailed explanation-3: -The nuclei re-form, and new nuclear membranes develop. This process results in four new cells, or gametes. Each gamete contains only one chromosome from each homologous pair. This makes the cell haploid, meaning that it has half the chromosome number of the original diploid cell.

Detailed explanation-4: -Microsporogenesis: Microspores are formed from microspore mother cells inside the anther. It is the process of formation of microspores from a pollen mother cell through meiosis division. The cells of sporogenous tissues undergo meiotic division to form microspore tetrad.

Detailed explanation-5: -Microspores are haploid, and are produced from diploid microsporocytes by meiosis.