gametophyte: The gamete-bearing individual or phase in the lifecycle of a plant having alternation of generations
Lycophytes, also known as the ‘fern allies’, are a clade of vascular plants similar to ferns but have unique leaves called microphylls. They are primitive plants and lack seeds, wood, fruit and flowers. As with the ferns, lycophytes produce spores for reproduction and are both wind-pollinated and dispersed.
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sporophyte: The spore-producing individual or phase in the lifecycle of a plant having alternation of generations
- In extant land plants, either the sporophyte or the gametophyte may be reduced (heteromorphic). In bryophytes (mosses, liverworts, and hornworts), the gametophyte is the most visible stage of the life cycle.
- Three examples of a sporophyte are Polypodium, mosses, and a pine tree. How does the gametophyte generation of a plant differ from the sporophyte generation? In most plants, the sporophyte.
- Some algae and plant species alternate their generations between diploid and haploid phases. Sporophytes represent the diploid phase of plants. Gametophytes represent the haploid phase. Differences in size between gametophyte and sporophyte phases exist among vascular plants and non-vascular plants.
- In a fern-plant, for example, which is a sporophyte, every karyokinesis divulges the double number, while in the prothallium, which is the gametophyte generation, the single number appears. 0 From egg to spore-mother-cell is sporophyte; from spore-mother-cell to egg is gametophyte.
Gametophyte and sporophyte?
Why does the sporophyte of mosses remain attached to the gametophyte?
Because the sporophyte grows out of the gametophyte.
Which stage is the main stage of moss sporophyte or gametophyte?
Gametophyte is the main stage in moss and sporophyte is dependent on gametophyte.
How have the sporophyte and gametophyte changed as plants have evolved?
The gametophyte has become smaller, and the sporophyte has become larger. To begin with main plant body was gametophytic and sporophyte was dependent on it. Later on, as the evolution progressed, both gametophyte and sporophyte became independent and ultimatly gametophyte became dependent on sporophyte.
For which does the sporophyte generation grow out of the gametophyte and remain parasitic upon the gametophyte?
In moss, where the sporophyte grows directly out of the top of the gametophyte.
Compare the gametophyte and sporophyte of a fern?
the gametophyte is only a haploid while the sporophyte is only a dploid
Does gametophyte generation depends on sporophyte generation in ferns?
it does not depending on the sporophyte generation, in fact the sporophyte itself that depending on the gametophyte generation -kayo93-
In mosses why is the sporophyte stage dependent on the gametophyte stage?
in mosses why is the sporophyte stage dependent on the gametophyte stage
Is the gametophyte or sporophyte dominant in mosses?
How does the sporophyte generation of a plant differ from the gametophyte generation?
The sporophyte generation carries its chromosomes as doubles. .. The spores then develop into the gametophyte generation. In most plants, the gametophyte is tiny compared to the sporophyte. As its name implies, the gametophyte generationproduces sex cells - sperm and eggs.
What is more dominant the gametophyte or sporophyte?
Angiosperms' and Gymnosperms' SPOROPHYTE generation is more dominant than it's GAMETOPHYTE generation.
What is female gametophyte?
Embryo sac is the female gametophyte of flowering plants. Situated in the flower. It is dependent on the sporophyte (what we call plant) for nutrition. here the gametophyte is reduced and sporophyte is dominant. In lower plants the female gametophyte is prominent and independent where it can photosynthesize. Usually it is called as a thallus. Here the sporophyte is reduced and the gametophyte is dominant.
How are the fern sporophyte and gametophyte stage the same?
In reference to the sporophyte and gametophyte, are the stages of the plant's life cycle thus being the same.
What is the dominant stage of the fern life cycle what is the relationship of the fern gametophyte and sporophyte?
in the life cycle of a fern, the dominant and recognizable stage is the diploid sporophyte. the the younger sporophyte grows from the gametophyte.
How does the gametophyte generation of a plant differ from the sporophyte generation?
In most plants, the sporophyte generation is dominant. In fern, for example, the fern itself is the sporophyte. This organism produces spores that fall to the substrate below and grow into a separate organism called a gametophyte. The gametophyte produces sperm and eggs in order to produce a new sporophyte which grows out of the gametophyte's body, destroying it. It is important to note that the gametophyte is haploid and the sporophyte is dploid.
What is the difference between sporophyte and gametophyte?
Sporophytes reproduce with spores, while gametophytes reproduce sexually Of the two, it is the gametophyte is larger than the sporophyte.
In which group of plants are both the sporophyte and gametophyte free- living?
Both the sporophyte and gametophyte are free-living and homomorphic, and belong to Cladophora.
What is true of all seed plants The gametophyte is dominant Seeds are enclosed in a vessel The gametophyte is free living The sporophyte is dominant?
During the life cycle of a plant gametophyte is to n as sporophyte is to?
Basically, plants have two stages in their life cycle, they can appear as a gametophyte or a sporophyte.
Do eggs have gametophyte or sporophyte?
Will megaspores divide to form the female gametophyte or the sporophyte?
What is the definition of the gametophyte and sporophyte generation of gymnosperms?
Gametophyte is the sexual form of a plant in alternation of generations. Sporophyte is the form of a plant that produces spores in alternation of generations.
What are the differences between the gametophyte stage and the sporophyte stage of the plant life-cycle?
the gametophyte stage begins with meiosis and the sporophyte stage begins with fertilization.
What is a Chromosome complement?
What Is Gametophyte
The chromosome compliment of a gametophyte is a sporophyte.
Compare and contrast the gametophyte plant of the moss with the gametophyte plant of the fern?
The gametophyte of moss is the dominant structure. The sporophyte of ferns is the dominant structure.
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.
Plants reproduce via asexual reproduction as well as via sexual reproduction. During the evolution of plant life, a variation can be seen in the development of the reproductive system of a plant depending on the complexity of the plant category. In the evolution of plants, we encounter six different plant categories namely Bryophytes, Psilophytes, Lycophytes, Sphenophytes, Pteridophytes and Spermatophytes. When considering all six types, the reproductive systems of each category are different from each other. In most plants, the sexual reproduction occurs by two different phases called meiosis and fertilization. By meiosis and fertilization, the life cycle of a plant divides into two distinct phases named sporophyte generation and gametophyte generation. During the reproduction process, these two phases take place alternatively and hence called Alternation of Generations. In some plants, sporophyte generation is dominant than the gametophyte generation while in some groups of plants, gametophyte generation is dominant.
CONTENTS
1. Overview and Key Difference
2. What is Sporophyte
3. What is Gametophyte
4. Similarities Between Sporophyte and Gametophyte
5. Side by Side Comparison – Sporophyte vs Gametophyte in Tabular Form
6. Summary
2. What is Sporophyte
3. What is Gametophyte
4. Similarities Between Sporophyte and Gametophyte
5. Side by Side Comparison – Sporophyte vs Gametophyte in Tabular Form
6. Summary
What is Sporophyte?
Sporophyte represents the asexual generation of a plant. It is a diploid structure having two sets of chromosomes in cells. Sporophyte generation is dominant in higher plants such as angiosperms and gymnosperms as well as in pteridophytes. Besides, this generation begins with the formation of diploid zygote upon fertilization of two types of gametes. The zygote divides by mitosis and grows into a diploid sporophyte.
Moreover, sporophytes bear sporangia, and by the process called meiosis (which reduces the number of chromosomes in a cell to half of its parents’ cells), the diploid sporophyte produces haploid spores. These haploid spores germinate and eventually grow as multicellular haploid structures called gametophytes which give rise to the next gametophyte generation which is a sexual phase. Furthermore, these haploid spores participate in the formation of new plants via asexual reproduction.
What is Gametophyte?
Gametophyte represents the sexual phase of the plant life cycle. It is a haploid phase that is dominant in lower plants such as bryophytes and algae. With evolution, gametophyte generation has become smaller and restricted into single cells. Gametophyte phase begins with the formation of haploid spores by sporophytes.
Figure 02: Gametophyte
Accordingly, spores divide by mitosis and develop into the multicellular haploid structure known as gametophyte. Also, by dividing again through mitosis, gametophytes produce haploid male and female gametes (egg and sperms) in order to carry out sexual reproduction. These male and female gametes fuse during the sexual reproduction and form a diploid cell called zygote. Then, the zygote starts the next generation which is the sporophyte generation. Likewise, alternation of generation continues in plants.
What are the Similarities Between Sporophyte and Gametophyte?
- Sporophyte and gametophyte are two stages of the plant life cycle.
- These stages help alternating generations via haploidy and diploidy.
- Also, both are multicellular structures.
- Furthermore, both produce haploid cells (spores or gametes).
![Example Of A Gametophyte Example Of A Gametophyte](/uploads/1/2/5/0/125056475/637684222.png)
What is the Difference Between Sporophyte and Gametophyte?
Sporophyte represents the diploid phase (2N) due to the formation of zygote, while gametophyte represents the haploid phase (N) due to the occurrence of meiosis. Therefore, this is the key difference between sporophyte and gametophyte. Besides, the sporophyte phase produces haploid spores, while the gametophyte phase produces male and female gametes (egg and sperms). Therefore, the sporophyte phase is asexual, while the gametophyte phase is sexual. Hence, it is also a difference between sporophyte and gametophyte.
Moreover, a further difference between sporophyte and gametophyte is that the diploid zygote is the first cell in a sporophyte generation, and the haploid spore is the first cell in the gametophyte generation. Also, in Bryophytes, Psilophytes, and Lycophytes, the gametophyte stage is larger and dominant, and the sporophyte stage grows on the gametophyte stage. In angiosperms and gymnosperms, the sporophyte phase is the larger and dominant comparatively, while the gametophyte phase is comparatively smaller. Hence, it is another difference between sporophyte and gametophyte.
Below is an infographic on the difference between sporophyte and gametophyte that provides more information on the differences. Wii sports resort torrent.
Summary – Sporophyte vs Gametophyte
Alteration of generation is a common feature in the life cycle of plants. Hence, the life cycle goes via two distinct phases; the asexual phase and the sexual phase. The asexual phase represents the sporophyte generation while the sexual phase represents by the gametophyte generation. Moreover, sporophytes are diploid and have double sets of chromosomes. On the other hand, gametophytes are haploid and have a single set of chromosomes. So, this is the key difference between sporophyte and gametophyte. Furthermore, sporophyte produces haploid spores while the gametophyte produces male and female gametes. In bryophytes and algae, gametophyte generation is dominant while in pteridophytes, gymnosperms and angiosperms, the gametophyte generation is dominant. Thus, this summarizes the difference between sporophyte and gametophyte.
Gametophyte And Sporophyte In Plants
Reference:
1. “Alternation of Generations.” Wikipedia, Wikimedia Foundation, 20 Dec. 2018. Available here
2. Study.com, Study.com. Available here
2. Study.com, Study.com. Available here
Image Courtesy:
1.”Marchantia sporophytes”By Jon Houseman – Jon Houseman and Matthew Ford, (CC BY-SA 3.0) via Commons Wikimedia
2.”Gametophyte2″By Random Tree – Own work, (CC BY-SA 3.0) via Commons Wikimedia
2.”Gametophyte2″By Random Tree – Own work, (CC BY-SA 3.0) via Commons Wikimedia