WitrynaThe male gametophyte phase of the life cycle begins in the microsporangium with meiotic production of tetrads of microspores followed by the division of each haploid microspore into a three-celled pollen grain. Because it is multicellular, the pollen grain is considered to be an immature male gametophyte, but its further development into a ... WitrynaOther articles where microgametophyte is discussed: plant: Heterosporous life histories: …each microspore develops into a microgametophyte (male gametophyte), which …

The pollen grain is (A) An immature male gametophyte

WitrynaThe male gametophyte develops and reaches maturity in an immature anther. In a plant’s male reproductive organs, development of pollen takes place in a structure … WitrynaThe developmental plasticity of plants is beautifully illustrated by the competence of the immature male gametophyte to change its developmental fate from pollen to … port dover pier fishing

Sexual Reproduction in Gymnosperms Biology for …

WitrynaWhen this happens, the microspore is transformed into a pollen grain, defined as an immature, endosporic male gametophyte (see Chapter 5). The generative cell divides one time, producing two sperm cells (Figure 6.8A). Pollen grains of angiosperms are shed in either a two- or three-celled condition, depending on whether the generative … Witrynagenerative cell. (1)in many gymnosperms, the cell of the male gametophyte that divides to form the sterile spermatogenous cells; (2) in angiosperms, the cell of the male … Witryna15 lip 2024 · Answer Answer: (b) Pollen grain or microspore is the first cell of male gametophyte generation and represents immature male gametophyte generation and represents immature male gametophyte. Development of male gametophyte is precocious, that is, it begins inside the microsporangium or pollen sac. The pollen … irish spelling of sean or shawn