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प्रश्न
What is spermatogenesis?
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उत्तर
Spermatogenesis is the process by which male spermatogonia develop into adult male gametes called spermatozoa. It begins at puberty and usually lasts until death, with only a tiny decline in the amount of sperm produced as age increases.
संबंधित प्रश्न
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions:
- Acrosome
- Nucleus
- Middle piece
Briefly describe the process of spermatogenesis.
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.
Explain the structure of secondary oocyte.
Describe the process of spermatogenesis with the help of diagram.
Explain two main process in sexual reproduction.
In angiosperms, the pollen germinates to produce a pollen tube that carries two gametes. What is the purpose of carrying two gametes when a single gamete can fertilize the egg?
The Androgen Binding Protein (ABP) is produced by ____________.
Draw a labeled sketch of a spermatozoan.
The part labelled as ______ contains the energy source that facilitates sperm motility.
Which of the following correctly describes the secondary oocyte?
Which is the correct order of steps occurring during spermatogenesis?
Select the correct sequence of oogenesis.
Draw a labelled diagram of a Graafian Follicle.
In human beings, the largest cell formed during Oogenesis is ______
Conversion of spermatid into sperm is called as _______.
Sertoli cells are found in ______.
Corona radia is made up of ______.
Spermiation is the process of the release of sperm from ______.
Gray crescent is the area ______.
How many sperms are formed from 4 primary spermatocytes?
Which of the following contains the actual genetic part of a sperm?
1st polar body is formed at which stage of oogenesis?
Layers of an ovum from outside to inside is ______.
Which of the following are called dual gland?
After the release of the secondary oocyte, the Graafian follicle develops into ______.
Observe the given figure and answer the questions that follow.
- Label A and B.
- Identify the process.
- What happens during this process and what is formed?
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
Which type of cell division forms spermatids from the secondary spermatocytes?
How many spermatozoa are formed from one secondary spermatocyte?
Given below are two statements.
- Statement I: The spermatids are non-motile and non-functional which get transformed into functional spermatozoa by the process of spermiogenesis.
- Statement II: During the process of this change, the spermatids remain held to each other and to Leydig's cells by cytoplasmic bridges.
In light of the above statements, select the correct answer from the option given below.
During spermatogenesis meiosis occurs in ______.
Draw a labelled diagram of a section through the ovary.
Which gamete is produced through oogenesis?
Which of the following phases are shared by both spermatogenesis and oogenesis?
