Gametes are produced by mitosis (not meiosis) and after fertilization a diploid zygote is created. … It can only divide by meiosis to produce haploid cells once more, which then produce the main adult body. In plants and some algae, there is a multicellular diploid and a multicellular haploid period of the life cycle.
Are zygotes in mitosis or meiosis?
Zygotes divide through a process known as mitosis, in which each cell doubles (one cell becomes two, two becomes four, and so on).
What produces a zygote?
zygote, fertilized egg cell that results from the union of a female gamete (egg, or ovum) with a male gamete (sperm). In the embryonic development of humans and other animals, the zygote stage is brief and is followed by cleavage, when the single cell becomes subdivided into smaller cells.
What is produced by meiosis?
Meiosis is a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells. This process is required to produce egg and sperm cells for sexual reproduction. … Meiosis begins with a parent cell that is diploid, meaning it has two copies of each chromosome.
Does a zygote undergo mitosis?
The zygote undergoes mitosis to form two identical cells that remain attached. This takes place about 36 hours after fertilization. Mitosis then occurs more frequently.
Does bryophytes show zygotic meiosis?
Thinking Process All algae except Fucus, Ectocarpus, Dictyota and a few other, show haplontic life cycle or zygotic meiosis, Bryophytes and pteridophytes show haplodiplontic life cycle and undergo sporic meiosis.
Where is zygote formed?
A zygote forms when a sperm penetrates the outer surface of an egg. This happens in the fallopian tube. While the zygote stage is very brief, lasting only the early days of conception, it is important. The single-celled zygote contains all of the genetic information required to form a fetus.
What do zygotes produce in plants?
Fertilization in plants occurs when haploid gametes meet to create a diploid zygote, which develops into an embryo.
How is a zygote formed in plants?
After pollination, male gamete present in the pollen grains moves into the ovules and fuses with the female gamete. The single cell resulting from this fusion is called a zygote. This process is called fertilization.
How is zygote formed class 10th?
A zygote is the initial cell formed when two gamete cells are joined by means of sexual reproduction. … Zygotes are usually produced by a fertilization event between two haploid cells—an ovum (female gamete) and a sperm cell (male gamete)—which combine to form the single diploid cell.
What type of cells are produced by meiosis and mitosis?
Mitosis produces two diploid (2n) somatic cells that are genetically identical to each other and the original parent cell, whereas meiosis produces four haploid (n) gametes that are genetically unique from each other and the original parent (germ) cell.
What is true of daughter cells produced by meiosis?
Which is true of daughter cells produced by meiosis II? They are haploid; they are genetically variable.
What is produced by meiosis apex?
the female reproductive cell in plants and animals. … the process by which an egg cell and sperm cell join together. meiosis. the process in which one parent cell produces four daughter gametes, each containing half the number of chromosomes of the parent.
Why does a zygote undergo mitosis not meiosis?
The single zygote cell never grows or divides my mitosis. It can only divide by meiosis to produce haploid cells once more, which then produce the main adult body. In plants and some algae, there is a multicellular diploid and a multicellular haploid period of the life cycle.
Why does the zygote undergo mitosis instead of meiosis?
Explanation: Mitosis is used to grow new tissues an repair the wounded ones. Meiosis is used to produce gametes which eventually fuse together to make zygote that will develop into a new individual.
What process occurs as a zygote becomes a blastocyst?
During fertilization, the sperm and egg unite in one of the fallopian tubes to form a zygote. Then the zygote travels down the fallopian tube, where it becomes a morula. Once it reaches the uterus, the morula becomes a blastocyst. The blastocyst then burrows into the uterine lining — a process called implantation.