Advertisements
Advertisements
प्रश्न
Name the functions - Acrosome of sperm.
What is the function of acrosome of sperm.
Name the function of the following:
Acrosome
Advertisements
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
Give the name and function for ‘A’ and ‘B’ from the diagram given below
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Describe the process of budding in hydra.
Implantation of embryo occurs in ______.
Body breaks up into several fragments and each fragment starts to live as a new individual. This is ______ type of reproduction.
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 two main process in sexual reproduction.
If newborns are produced at the age of menopause, they may be with some abnormalities. Why?
If one pollen grain produces two male gametes, how many pollen grains are needed to fertilize 10 ovules?
During spermatogenesis, spermatogonium grows in size to become ______.
The part labelled as ______ contains the energy source that facilitates sperm motility.
Identify the labels (i-iv) in the given diagram of the ovum.
Which of the following correctly describes the secondary oocyte?
Identify the proper order of spermatogenesis and choose the correct option.
Identify the enzyme released by the sperm which has lytic activity.
______ undergoes 2nd meiotic division during spermatogenesis.
Which of the following events take place during spermatogenesis?
Find out the CORRECT sequence of spermatogenesis.
Select the pair of cells which does not divide further by mitosis.
Which of the following stage of oogenesis forms a membrane called zona pellucida surrounding it?
By which process sperms released from the seminiferous tubules?
The immature male germ cell undergo division to produce sperms by the process of spermatogenesis.
Choose the correct one with reference to the above.
It The cell division in secondary oocyte is suspended at ______.
The nutritive cells found in seminiferous tubules are ______.
How many sperms are formed from 4 primary spermatocytes?
Acrosome is a type of ______.
Mark the odd one.
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?
In the process of fertilization, this is true:
3-celled male gamete develops in:
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:
Capacitation refers to changes in the ______.
Germ cells present in the seminiferous tubules undergo ______
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?
The process of gametogenesis is initiated by ______ and ______ hormones respectively.
Match List - I with List - IІ.
| List - I | List - II |
| A. Head | I. Enzymes |
| B. Middle piece | II. Sperm motility |
| C. Acrosome | ΙII. Energy |
| D. Tail | IV. Genetic material |
Choose the correct answer from the options given below:
During oogenesis the meiotic division is arrested at ______ before fertilization.
