The discharge of male gametes happens near the mouth of the archegonium. As the male gametophyte, pollen is a multicellular, haploid stage that produces the sperm.. Pollen development occurs in a structure called the microsporangium (micro = small), located within the … )Placental mammals develop A. Once an egg and sperm meet, either from the same gametophyte or from different gametophytes, a zygote is formed. The Pollen Grain: the Male Gametophyte. The fusion of the male and female gametes occurs. The female gametophyte contains seven-celled and eight nucleate embryo sac. The small plant, called a gametophyte, produces both male and female gametes. Which combination of sex chromosomes results in a male human being? )The sporophyte generation produces spores that grow into a A. Tube cell and a generative cell is present in male gametophyte, which divides and form two male … The gametophyte comprises the main plant (the green moss or liverwort), while the diploid sporophyte is much smaller and is attached to the gametophyte. Pollen is the male gametophyte in angiosperms and gymnosperms. Pollen definition, the fertilizing element of flowering plants, consisting of fine, powdery, yellowish grains or spores, sometimes in masses. The gametophyte even has special structures to produce the eggs and sperm. Pollen is often described in everyday language as plant sperm, but this is not the case! Which is one advantage of sexual reproduction? Over time, some … )Seeds C.)Cones D.)Amniotic Eggs 4. The female gametophyte is parenchymatous and large. Gymnosperms vs Angiosperms (Similarities and Differences between Gymnosperms and Angiosperms). Furthermore, sporophyte produces haploid spores while the gametophyte produces male and female gametes. Male gametes reach female gametophyte and the egg cell gamete though a pollen tube: an extension of a cell within the pollen grain. 1. Gymnosperms and Angiosperms are two major groups of Seed Plants (Cryptogams). The plant gametophytes produce male and female gametes which unite at pollination to form a new diploid zygote. Classification of Gymnosperms So, this is the key difference between sporophyte and gametophyte. )In leg an egg laid in water B. As in gymnosperms, the male gametophyte is the pollen grain. 12. In the previous post, we discussed the General Characters and Affinities of Gymnosperms.Here, in this post, we will discuss the Similarities and Differences between Gymnosperms and Angiosperms )In a pouch on the mother's body C.)Inside the mother's body D.)Inside an amniotic egg 3. After fertilization, a zygote develops to form the embryo and the ovule forms the seed. )Gametophyte B. )Bees see blue & purple the best . Read about the Unique Features of Bryophytes here. In bryophytes and algae, gametophyte generation is dominant while in pteridophytes, gymnosperms and angiosperms, the gametophyte generation is dominant. The zygote matures into a new diploid sporophyte, thus completing the cycle. The haploid stage, in which a multicellular haploid gametophyte develops from a spore and produces haploid gametes, is the dominant stage in the bryophyte life cycle. In order for fertilization to occur in most flowering plants, insects or other animals must transport the pollen to the pistil. )Gymnosperm C.)Angiosperm D.)Pupa 2. XX-(this female) YY XY**(this is male) either XX or YY ... gametophyte ** C.) sporophyte D.) zygote ... gymnosperms. See more. Archegonia are absent : Distinct archegonia is present. A major distinguishing feature of angiosperms is the practice of double fertilization. )Angiosperms reproduce with A. )Spores B. The following figure shows the life cycle of a gymnosperm.
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