WebHorsetail gametophyte processes are similar, but they look more like little green ragged mounds. Many gametophytes usually grow in close proximity to each other, and in most ferns and horsetails the sperm of one gametophyte is most likely to fertilize the egg of a different gametophyte. This fertilized egg develops into an embryo, which is the ... WebSolution. Plant life cycle and alteration of generation: In plants, both haploid and diploid cells can divide by mitosis which leads to the formation of different plant bodies - haploid and …
Life Cycle of the Pine Tree (Gymnosperm) - ru
WebThese microspores give rise to pollen grains (the proper male gametophyte) after undergoing mitotic divisions. When the microsporangia disrupt a huge number of pollen grains is released into the atmosphere. The pollen grains can be dispersed by the wind over long distances thanks to their air sacs. WebJan 7, 2024 · These grains have winglike structures that allow the wind to carry them up the tree to the female cones. Deep inside the female cone, ovules develop into the mature female gametophyte that bears fertile egg cells. When the egg cells are ready, the pollen grain … 46歳 西暦
Solved How are the gametophytes of a pine tree different
WebThe resulting megagametophyte produces the female gametes (eggs). This development (called megagametogenesis) involves free-nuclear mitotic divisions. The cell wall remains intact while the nucleus divides until the megagametophyte, or embryo sac, is formed. The embryo sac typically has eight nuclei. Free-nuclear mitotic division is also found ... WebSep 22, 2007 · Inside of each microsporangium, microspore mother cells (2n) divide by meiosis to form haploid microspores (n). Each microspore cell divides by mitosis into a 4-celled gametophyte called a pollen grain. Pinus: mature pollen grains w.m. Pine pollen (male gametophyte) has a pair of concave wings that will help it travel on the wind. WebIs pine seed a gametophyte or sporophyte? Asked By : Janet Hutchins Gymnosperms are vascular plants that produce seeds in cones. Examples include conifers such as pine and spruce trees. The gymnosperm life cycle has a dominant sporophyte generation. What is the sporophyte of a pine? The sporophytes of all conifers are trees or shrubs. 46歳 男性 白髪