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The first haploid cell in the life cycle of a plant is the?
The first haploid cell in the life cycle of a plant is the spore, which is produced by meiosis in the sporophyte generation. Spores germinate to form haploid gametophytes, which produce gametes through mitosis for fertilization.
What is the dominant generation of Bryophytes?
In vascular plants, the principal generation phase is the sporophyte, which is usually diploid with two sets of chromosomes per cell. By contrast, the principal generation phase in non-vascular plants is usually the gametophyte, which is haploid with one set of chromosomes per cell.http://en.wikipedia.org/wiki/Vascular_plants
Which generation begins with the zygote?
The generation that begins with the zygote is the first generation. The zygote is formed from the fusion of a sperm and egg cell during fertilization, marking the start of a new individual's life cycle. From there, the zygote undergoes cell division and development to eventually form an embryo, fetus, and then a fully developed organism.
What is archespirium?
Archesporium is a cell or cell structure in a sporophyte from which spores may later develop during the alternate generation.
Does the fertilized egg in an ovule become the zygote of a new sporophyte?
Yes, the fertilized egg within an ovule develops into a zygote, which is the initial cell of a new sporophyte generation in plants. Following fertilization, the zygote undergoes a series of divisions and developmental processes to form an embryo, which will eventually grow into a mature sporophyte. This process is part of the plant life cycle, which alternates between the sporophyte and gametophyte generations.
Why do gametophytes die after the sporophyte starts to grow?
The gametophyte is responsible for producing gametes, both male and female. When a male gamete fertilizes the female gamete, a zygote, or fertilized cell is created. This zygote matures and grows (through mitosis) into a sporophyte. At this point, the gametophyte has already done its job, and is not needed. Therefore it dies. The sporophyte releases spores, which eventually develop into gametophytes, and the cycle restarts.
A seed contains which generation?
A seed contains the embryo, which represents the next generation of the plant, specifically the sporophyte generation. It develops from the fertilization of the egg cell by the sperm cell, forming a diploid zygote. The seed also contains stored nutrients and protective coverings that facilitate its growth into a new plant.
How are spores produced in the diploid phrase?
In the diploid phase of the life cycle, known as the sporophyte generation, spores are produced through a process called meiosis. During meiosis, diploid cells undergo two rounds of cell division to produce haploid spores, which are genetically distinct from the parent organism. These spores can then germinate and develop into the haploid gametophyte generation, continuing the life cycle. This process is crucial for sexual reproduction in plants, fungi, and some protists.
When does the cell grow in size during the cell cycle?
it gets bigger
Which process occurs first in the cell cycle: mitosis or meiosis?
Mitosis occurs first in the cell cycle before meiosis.
From what cell did the sporophyte develop?
On the gametophyte, cells in the archegonium and antheridium form the eggs and sperm. The sperm swim to the egg and fertilize it, forming the zygote. The embryo develops into the sporophyte, still attached to the gametophyte.
In plants that have alternation of generations the haploid spores are made by the?
Haploid spores in plants with alternation of generations are produced by meiosis in the sporophyte generation. Meiosis is a type of cell division that results in haploid cells (spores) with half the genetic material of the parent cell.
