33. Each pollen grain is reduced to two or three cells in a waxy protective coat. 4. Her research interests include Bio-fertilizers, Plant-Microbe Interactions, Molecular Microbiology, Soil Fungi, and Fungal Ecology. @media (max-width: 1171px) { .sidead300 { margin-left: -20px; } } PMC. A gametophyte represents the sexual phase of the plant life. These reproductive cells leave the gametophyte and undergo fertilization with the female gamete. 4. The key difference between sporophyte and gametophyte is that the sporophyte is a diploid structure that participates in asexual reproduction while the gametophyte is a haploid structure that participates in sexual reproduction of plants. However, the main difference between homospory and heterospory is the size and the sex of the spores produced by plants. Michael Borg, Lynette Brownfield, David Twell; Male gametophyte development: a molecular perspective, Journal of Experimental Botany, Volume 60, Issue 5, 1 April 2009, Pages 1465–1478, Available Here2. The male gametophyte gives rise to male gametes while the female gametophyte gives rise to female gametes. In gametophyte, male or female gametes are produced. Skinner, Debra J, and Venkatesan Sundaresan. The gametophyte consisting of reproductive organs undergo mitosis to form haploid gametes. What is Female Gametophyte “The Female Gametophyte.” The Arabidopsis Book / American Society of Plant Biologists 9 (2011): e0155. When two gametes fuse with each other, a diploid cell known as zygote forms and continues into sporophytic generation. The male gametophyte inside the pollen grain represents the first stage of growth. The key difference between male and female gametophyte depends on the type of cell which produces the two structures. In angiosperms, the female gamete produced by the female gametophyte undergoes triple fusion. The pollen grain germinates on the stigma, producing the pollen tube, which burrows into the ovary through the style. This explains the basic difference between male and female gametophyte. 34. What are the Similarities Between Male and Female Gametophyte – Outline of Common Features 4. With respect to the former, experts have carried … Heterospory mainly occurs in seed plants. “Angiosperm embryo sac diagram” By BlueRidgeKitties (CC BY 2.0) via Flickr. 13 Sept. 2018, Available Here, 1. In angiosperms, microspore contains a single haploid nucleus, which undergoes mitosis to produce two nuclei: tube nucleus and generative cell nucleus. Main difference is their structure and function. 1. Differences between male gametophyte and female gametophyte are given in following table:- 1) male gametophyte is derived from Pollen Grain or microspore which are formed in Pollen sac of anther whereas female gametophyte is derived from megaspore which is formed in nucellus of ovule. The male gametophyte derives from the microspore while the female gametophyte derives from the megaspore. Megasporangium produces the megaspores inside the ovary in angiosperms. They represent the gametophyte generation of plants and algae. Male gametophyte leaves the microsporangium while female gametophyte remains inside the megasporangium. ADVERTISEMENTS: Some of the major differences between male and female gametophytes flowering plant are as follows: Male Gametophyte: 1. They represent one of the two generations in the alteration of generations in plants. The plant’s haploid phase is called gametophyte and the diploid phase is called the sporophyte. Male and female gametophytes produce their respective male and female gametes that are necessary for sexual reproduction. Male gametophyte and female gametophyte represent the gametophytic generation or the haploid generation of plants and in some algae. Male and female gametophytes arise from hetero spores. Lastly, wind plays an important role in pollination in gymnosperms because pollen is blown by the wind to land on the female cones. It has two phases of growth— pre-pollination and post-pollination. The gametophyte is a haploid phase in which haploid male and female gametes are produced whereas; sporophyte is a diploid phase in which diploid spores are produced. Male gametes small non-motile. Male gametophyte is inside the pollen grain while female gametocyte is inside the ovule. In contrast, the male gametes produced from the male gametophyte of gymnosperms undergo internal fertilization inside the female gametophyte or the ovary. (adsbygoogle = window.adsbygoogle || []).push({}); Copyright © 2010-2018 Difference Between. The microspore gives rise to the male gametophyte via formation of the microsporangium. 5. Antheridium is present Antheridium is absent Male gametes are flagellated Male gametes may or may not be flagellated Male gamete needs water … Though the stages are common in different plant groups, their level of complexity and status across various groups is different. One cell develops into the megaspore, which can give rise to the gametophyte. It is derived from a pollen grain or microspore. The male gametophyte derives from the microspore while the female gametophyte derives from the megaspore. Moreover, sporophyte produces haploid spores while the gametophyte produces male and female gametes. The male gametes produced by the male gametophyte perform external fertilization in algae and requires an aquatic medium. Moreover, both are derived from their respective spores. Male gametophyte has three cells while female gametophyte has eight cells. Read on to explore more differences between the two. As in Cycas. 32. Gymnosperms are agroup of plants that share one common characteristic in that they bear seeds,but their seeds do not develop from within an ovary. It comes from the microspore produced by the microsporangium in heterosporous plants including angiosperms, gymnosperms, lycophytes, and horsetails. Female gametes are larger than male gametes. Difference Between Homosporous And Heterosporous Pteridophytes In Tabular Form Angiosperms undergo triple fusion; here, one of the germ nuclei from the male gametophyte fuses with the egg nuclei, forming the zygote, and the other germ nucleus fuses with the two polar nuclei, forming a triploid nucleus. As in Cycas. The triploid nucleus later becomes the endosperm. The female gametophyte arises from the megaspore via the formation of the megasporangium. Male gametophyte is the haploid stage that produces male gametes. The female gametophyte produces non- motile or less motile female gametes in both algae and plants. The walls of the ovary develop into fruit. Male gametophyte refers to the male gamete bearing part of the body of the organism or the part of the body that contains the ultimate gamete of male i.e. Another difference between male and female gametophyte is their origin. The microspores are produced from the microsporangia whereas the megaspores are produced from the megasporangia. The male cone produces tiny amounts of pollen grains that become the male gametophyte. So, the gametophyte is known as the sexual phase during sporophyte as the asexual phase of the plant’s life. As in Cycas. Thus, microspores, link sporophytic generation and gametophytic generation during the alternation of generations. They give rise to the sexual reproduction cycle in algae and plants. Mostly spores are surrounded by a thick wall to avoid extreme conditions. and the structure that bears it like testes in humans and anther in flowers are male gametophytes. The male gametophyte found in plants and algae produces male reproductive cells that are usually motile and flagellated. Drews, Gary N., and Anna M.G Koltunow. The key difference between male and female gametophyte depends on the derivation of each gametophyte. Classification of plants In Psilophytes, Bryophytes and Lycophytes, the sporophyte depends on gametophyte stage whereas, in angiosperms, this stage is longer than gametophyte. In plants, alternation of generations exists, where the members have haploid and diploid phases. These grains have winglike structures that allow the wind to carry them up the tree to the female cones. This cycle is named alternation of generations and organisms alternate between a sexual phase, or gametophyte generation and an asexual phase, or sporophyte generation. Therefore, female gametes are usually non-flagellated. Dr.Samanthi Udayangani holds a B.Sc. Moreover, the germ cell nucleus fuses with the two polar nuclei to form the triploid nucleus that develops into the endosperm. While the female gametophyte produces female gamete or the egg cell, the male gametophyte produces male gamete or the sperm cell. Moreover, upon germination, the generative cell nucleus produces two germ nuclei, which serve as the male gametes. In gymnosperms where the main reproductive structure is the flower, the male gametophyte occurs in the pollen grains. Male and female gametophyte are the two types of gametophytes produced by heterosporous plants. 6. Know the Differences between Archegonia, Antheridia, Microspore, Megaspore, Pollen Grain, Ovary, Ovule, Seed, Embryo, Male Gametophyte and Female Gametophyte. Figure \(\PageIndex{1}\): Male and female gametophytes: These series of micrographs shows male and female gymnosperm gametophytes. The microspore or pollen grain produces the male gametophyte while the megaspore produces the female gametophyte. Thus, both produce gametes that will undergo fertilization to produce new organisms in the mode of sexual reproduction. ... (male gametophyte) which is the haploid stage because double fertilization and triple fusion are absent in this class. Alternation of generations between sporophyte and gametophyte takes in the following stages: Sporangium present in diploid sporophytes undergo meiosis to form haploid spores. Female gametophyte is the haploid stage that produces female gametes. The gametophyte produces male and female gametes directly from its plant body. The key difference between male and female gametophyte is about the derivation of the gametophytes. Furthermore, all the cells in the male gametophyte are functional while only two cells in the female gametophyte are functional. Heterosporous plants produce both male and female gametophytes. Male and female gametophytes are the two gametophytic stages of heterosporous plants. Additionally, the female gametophyte is formed inside the megasporangium in seed plants, while the male gametophyte is formed near the female gametophyte. Plants reproduce via asexual reproduction as well as via sexual reproduction. Male gametophyte produces male gametes while female gametophyte produces female gametes. Antheridia: Male reproductive structure of mosses and ferns produces the sperms. 1. Male gametophyte disintegrates after fertilization while female gametophyte produces new structures after fertilization. All rights reserved. What is Male Gametophyte – Definition, Structure, Role 2.
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