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प्रश्न
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.
पर्याय
A and R are true, R is the correct explanation of A.
A and R are true, R is not the correct explanation of A.
A is true, R is false.
Both A and R are false.
उत्तर
Both A and R are false.
संबंधित प्रश्न
With the help of diagrammatic representation, explain the process of gametogenesis
How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.
In meiosis, the number of chromosomes becomes ___________.
At what stage of development are the gametes formed in newborn male and female?
Which of the following enter the maturation phase of oogenesis?
Formation of ____________ is an indication of the termination of oogenesis.
Identify the enzyme released by the sperm which has lytic activity.
Middle piece of mammalian sperm possesses ______.
The immature male germ cell undergo division to produce sperms by the process of spermatogenesis.
Choose the correct one with reference to the above.
Which among the following has 23 chromosomes?
Identify the wrong statement from the following.
Gray crescent is the area ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
Which of the following groups of cells in the male gonad, represent haploid cells?
Acrosome is a type of ______.
Which of the following is a primary sex organ of female?
After the release of the secondary oocyte, the Graafian follicle develops into ______.
In human females, meiosis II is not completed until:
Process of maturation and development of sperms ______.
