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प्रश्न
Name the functions - Acrosome of sperm.
What is the function of acrosome of sperm.
Name the function of the following:
Acrosome
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उत्तर
It is a cap-like structure present in the anterior part of the head of the sperm. It contains the hyaluronidase enzyme, which hydrolyses the outer membrane of the egg, thereby helping the sperm to penetrate the egg at the time of fertilization.
संबंधित प्रश्न
With the help of diagrammatic representation, explain the process of gametogenesis
Draw a labelled diagram of sperm.
Implantation of embryo occurs in ______.
Which precautions will you follow to maintain the reproductive health?
Multiple choice question.
The given figure shows human sperm. Various parts of it are labelled as A, B, C, and D. Which labelled part represents acrosome?
Explain the structure of secondary oocyte.
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 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.
During spermatogenesis, spermatogonium grows in size to become ______.
Formation of ____________ is an indication of the termination of oogenesis.
Select the correct sequence of oogenesis.
Identify the correct stages (P - S) in the given diagram of spermatogenesis.
The immature male germ cells differentiates into ______ at the end of meiosis I.
What is the location of oogenesis?
First meiotic division is observed in ____________.
Which of the following events take place during spermatogenesis?
Select the pair of cells which does not divide further by mitosis.
After ovulation, Graafian follicle regresses into ______.
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?
How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.
At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.
During embryonic development, the establishment of polarity along anterior/posterior, dorsal/ventral or medial/lateral axis is called ______.
The head of the epididymis at the head of the testis is called ______.
Which of the following groups of cells in the male gonad, represent haploid cells?
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
3-celled male gamete develops in:
Human milk differs from cow's milk because human milk contains:
Germ cells present in the seminiferous tubules undergo ______
How many primary oocytes produce one oogonia?
The mother germ cells are transformed into a mature follicle through series of steps. Provide the missing steps in the blank boxes.
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?
Meiotic division of the secondary oocyte completed ______.
Answer the following:
How many primary spermatocytes and oocytes are required for the formation of 100 spermatozoa and ova?
Explain Oogenesis with diagram.
Distinguish between human sperm and ovum.
Select a correct pair of cells with identical set of chromosomes.
