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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
Define spermiation.
In meiosis, the number of chromosomes becomes ___________.
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
Give scientific reason.
There is a menopause when women are 45-50 years old.
Answer the following type of question Assertion (A) and Reason (R).
(A) - Head of the sperm consists of acrosome and mitochondria.
(R) - Acrosome contains spiral rows of mitochondria.
Describe the structure of the human ovum with a neat labelled diagram.
Expand the acronym.
LH
Expand the acronym.
hCG
Four primary spermatocytes give rise to ______.
What is the location of oogenesis?
Which of the following events take place during spermatogenesis?
The human male gamete is usually about ______ in length.
How many sperms are formed from a secondary spermatocyte?
Middle piece of mammalian sperm possesses ______.
Sertoli cells are found in ______.
By which process sperms released from the seminiferous tubules?
Corona radia is made up of ______.
Which among the following has 23 chromosomes?
The principal tail piece of human sperm shows the microtubular arrangement of ______.
Which of the following is a primary sex organ of female?
The prostate gland and seminal vehicle perform the function of ______.
Aquatic animals in which fertilisation occurs in water are said to be
Capacitation refers to changes in the ______.
How many primary oocytes produce one oogonia?
During reproduction, the chromosome number (2n) reduces to half (n) in the gametes and again the original number (2n) is restored in the offspring. What are the processes through which these events take place?
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.
Sketch and label the process of oogenesis.
During oogenesis the meiotic division is arrested at ______ before fertilization.
