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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.
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संबंधित प्रश्न
The following is the illustration of the sequence of ovarian events (a − i) in a human female
(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.
(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.
(iii) Explain the changes that occur in the uterus simultaneously in anticipation.
(iv) Write the difference between ‘c’ and ‘h’.
(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.
Define spermiogenesis.
What is oogenesis?
Describe the process of budding in hydra.
Fill in the blank.
Implantation of embryo occurs in ------
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
Mention the differences between spermiogenesis and spermatogenesis.
During spermatogenesis, spermatogonium grows in size to become ______.
Which of the following occurs during maturation phase of spermatogenesis?
Which is the correct order of steps occurring during spermatogenesis?
The immature male germ cells differentiates into ______ at the end of meiosis I.
Conversion of spermatid into sperm is called as _______.
After ovulation, Graafian follicle regresses into ______.
How many functional sperms and how many ova will be formed by a primary spermatocyte and a primary oocyte.
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?
Aquatic animals in which fertilisation occurs in water are said to be
If for a species 2n = 16, then during Ist prophase and IInd prophase of the meiotic division of a cell, how many tetrads and diads will be formed:
In human females, meiosis II is not completed until:
What is the difference between a primary oocyte and a secondary oocyte?
Explain Oogenesis with diagram.
