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

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