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Correct sequence in development is -
- a)Fertilization - Zygote - Cleavage - Morula - Blastula - Gastrula
- b)Fertilization - Zygote - Blastula - Morula - Cleavage - Gastrula
- c)Fertilization - Cleavage - Morula - Zygote - Blastula - Gastrula
- d)Cleavage - Zygote - Fertilization - Morula - Blastula - Gastrula
Correct answer is option 'A'. Can you explain this answer?
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Correct sequence in development is -a)Fertilization - Zygote - Cleavag...
The first step is of fertilisation.
The embryonic development takes through several developmental stages.
The sperm and ovum fuse to form the zygote.
The zygote undergoes mitotic cleavage to form morula which is a 16 celled stage known as the morula which further divides to form blastula which is 128 celled stage.
The blastula differentiates into gastrula which is cup-shaped and has three germ layer cells which further forms an embryo and undergo organogenesis.
The embryonic development takes through several developmental stages.
The sperm and ovum fuse to form the zygote.
The zygote undergoes mitotic cleavage to form morula which is a 16 celled stage known as the morula which further divides to form blastula which is 128 celled stage.
The blastula differentiates into gastrula which is cup-shaped and has three germ layer cells which further forms an embryo and undergo organogenesis.
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Correct sequence in development is -a)Fertilization - Zygote - Cleavag...
The Correct Sequence in Development is:
Fertilization - Zygote - Cleavage - Morula - Blastula - Gastrula
Explanation:
Fertilization: It is the process in which the sperm and the egg fuse together to form a zygote. This occurs in the ampulla of the fallopian tube.
Zygote: The zygote is the initial cell formed after fertilization. It contains the combined genetic material from both the sperm and the egg.
Cleavage: Cleavage is the rapid division of the zygote into smaller cells called blastomeres. This division occurs through mitosis and forms a solid ball of cells known as the morula.
Morula: The morula is a solid ball of cells that is formed after several rounds of cleavage. It consists of about 16-32 blastomeres and resembles a mulberry.
Blastula: The morula undergoes further division and rearrangement of cells to form a fluid-filled hollow ball of cells called the blastula. The blastula consists of an outer layer of cells called the trophoblast and an inner cell mass.
Gastrula: The blastula undergoes a process called gastrulation, where the cells rearrange and differentiate into three primary germ layers: ectoderm, mesoderm, and endoderm. This results in the formation of a structure called the gastrula.
Therefore, the correct sequence in development is Fertilization - Zygote - Cleavage - Morula - Blastula - Gastrula.
Fertilization - Zygote - Cleavage - Morula - Blastula - Gastrula
Explanation:
Fertilization: It is the process in which the sperm and the egg fuse together to form a zygote. This occurs in the ampulla of the fallopian tube.
Zygote: The zygote is the initial cell formed after fertilization. It contains the combined genetic material from both the sperm and the egg.
Cleavage: Cleavage is the rapid division of the zygote into smaller cells called blastomeres. This division occurs through mitosis and forms a solid ball of cells known as the morula.
Morula: The morula is a solid ball of cells that is formed after several rounds of cleavage. It consists of about 16-32 blastomeres and resembles a mulberry.
Blastula: The morula undergoes further division and rearrangement of cells to form a fluid-filled hollow ball of cells called the blastula. The blastula consists of an outer layer of cells called the trophoblast and an inner cell mass.
Gastrula: The blastula undergoes a process called gastrulation, where the cells rearrange and differentiate into three primary germ layers: ectoderm, mesoderm, and endoderm. This results in the formation of a structure called the gastrula.
Therefore, the correct sequence in development is Fertilization - Zygote - Cleavage - Morula - Blastula - Gastrula.
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