WebIt produces both male and female strobili. The cells of the strobili undergo meiosis, or cell division that reduces the number of chromosomes by half. This forms the gametophyte, the haploid stage. The male sex cells ( pollen) then form, and fertilize the female sex cells ( ovules ). The resulting zygote is diploid. WebPollen tubes act as conduits to transport the male gamete cells from the pollen grain—either from the stigma (in flowering plants) to the ovules at the base of the pistil or directly through ovule tissue seed-a flowering plant's unit of reproduction, capable of developing into another such plant. 2. Describe the sporophyte of a pine.
Pollen - Definition, Structure and Formation Biology …
WebMay 4, 2024 · Mature pollen grains contain two cells: a generative cell and a pollen tube cell. The generative cell is contained within the larger pollen tube cell. When a pollen grain … WebIn angiosperms, each pollen grain produces two sperm. What do these sperm do? a. Each one fertilizes a separate egg cell. b. One fertilizes an egg, and the other is kept in reserve. … fighter reaction 5e
Angiosperm Life Cycle - Digital Atlas of Ancient Life
WebApr 9, 2024 · Mature pollen grains contain two cells: a generative cell and a pollen tube cell. The generative cell is contained within the larger pollen tube cell. Upon germination, the tube cell forms the pollen tube through which the generative cell migrates to enter the ovary. WebIn angiosperms, each pollen grain produces two sperm. What do these sperm do? a. Each one fertilizes a separate egg cell. b. One fertilizes an egg, and the other is kept in reserve. c. Both fertilize a single egg cell. d. One fertilizes an egg, and the other fertilizes a cell that develops into stored food. Verified Solution 0:01 / 0:50 WebJan 16, 2024 · o) Each mature pollen in angiosperm contains two cells, the vegetative and generative cells. p) The vegetative cell is larger and contains abundant food reserves and a large irregularly shaped nucleus. q) The generative cell is the small one that floats in the cytoplasm of the vegetative cell. It is spindle-shaped with dense cytoplasm and nucleus. fighter reactions