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प्रश्न
Define spermiogenesis.
Define the term spermiogenesis.
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उत्तर १
Spermiogenesis is the process of transforming spermatids into mature, flagellated spermatozoa (sperms).
उत्तर २
The process of transformation of a circular spermatid to a spermatozoon is called spermiogenesis.
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
Explain the development of a secondary oocyte (ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.
Define spermiation.
Identify True/False statement. Correct the false statement to make it true.
Oogenesis takes place in the corpus luteum.
Explain the structure of secondary oocyte.
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
Expand the acronym.
LH
The following is the illustration of the sequence of ovarian events (a-i) in a human female.
Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
Identify the proper order of spermatogenesis and choose the correct option.
Identify the correct stages (P - S) in the given diagram of spermatogenesis.
Identify the CORRECT sequence of events.
Which of the following is diploid?
How many sperms are formed from a secondary spermatocyte?
Middle piece of mammalian sperm possesses ______.
Extrusion of second polar body from egg nucleus occurs ______.
The head of the epididymis at the head of the testis is called ______.
The prostate gland and seminal vehicle perform the function of ______.
Penetration of the sperm in the ovum is followed by ______
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?
Sperms can be stored for several years in liquid nitrogen with a temperature of ______.
Fetal sex can be determined by examining cells from amniotic fluid looking for:
The region of the root tip whose cells undergo rapid elongation and enlargement and are responsible for the growth of the root in length is called the:
Growth hormone of pituitary is more effective in ______.
Human milk differs from cow's milk because human milk contains:
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
In spermatogenesis, at the end of the first meiotic division ______ are formed.
The diagram given below shows the various steps in spermatogenesis.
- Name the parts labelled '1', '2' and '3'.
- Name the process by which part '3' changes to part '4'.
At the onset of puberty, gonadotropin releasing hormone is secreted by ______.
