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प्रश्न
Define spermiation.
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उत्तर १
Spermiation is the process of releasing mature spermatozoa. In this, spermatozoa are shed into the lumen of the seminiferous tubule for transport.
उत्तर २
After spermiogenesis, sperm heads become embeded in sertoli cells from which they obtain their nutrition and finally get released into the lumen of seminiferous tubules. This process of release of mature sperms from sertoli cells is called spermiation.
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संबंधित प्रश्न
Identify True/False statement. Correct the false statement to make it true.
Oogenesis takes place in the corpus luteum.
What is gamete formation?
Give scientific reason.
There is a menopause when women are 45-50 years old.
Sex organs produce gametes which are diploid.
The male sex hormone testosterone is secreted from ____________.
The process which the sperm undergoes before penetrating the ovum is ____________.
At what stage of development are the gametes formed in newborn male and female?
Complete the analogy.
1 primary spermatocyte : 4 spermatozoa :: 1 primary oocyte : ____________.
Identify the labels (i-iv) in the given diagram of the ovum.
Which of the following occurs during maturation phase of spermatogenesis?
Identify the proper order of spermatogenesis and choose the correct option.
The cell which undergoes meiosis I during spermatogenesis is the ______.
Cells of corona radiata remain grouped together by ______.
Which of the following groups of cells in the male gonad, represent haploid cells?
During oogenesis, each diploid cell produces ______.
In oogenesis haploid egg is fertilised by sperm at which stage?
Head of epididymis is called as ______.
Read the following and answer from given below:
Oogenesis is the process of the formation of an ovum in the ovaries. It consists of three phases: multiplication, growth, and maturation. Oogenesis is controlled by hormones GnRH, LH, FSH. GnRH secreted by the hypothalamus stimulates the anterior lobe of the pituitary gland to secrete LH and FSH.
Which cell division is involved in the formation of secondary oocytes?
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with 2n = 50 shall be:
In human females, meiosis II is not completed until:
Capacitation refers to changes in the ______.
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
What is the difference between a primary oocyte and a secondary oocyte?
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 ______.
Process of maturation and development of sperms ______.
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
At the onset of puberty, gonadotropin releasing hormone is secreted by ______.
