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
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.
The fusion of the male and the female gametes is called ______.
Name the hormones involved in regulation of spermatogenesis.
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
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.
Give scientific reason.
Older women are more likely to give birth to children with some abnormalities.
Sex organs produce gametes which are diploid.
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.
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 ______.
The part labelled as ______ contains the energy source that facilitates sperm motility.
Identify the diploid cell.
Which is the correct order of steps occurring during spermatogenesis?
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.
Which of the following is diploid?
______ undergoes 2nd meiotic division during spermatogenesis.
Which of the following events take place during spermatogenesis?
In human beings, the largest cell formed during Oogenesis is ______
Extrusion of second polar body from egg nucleus occurs ______.
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.
At the time of organogenesis, genes regulate the process at different levels and at different time due to ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
The nutritive cells found in seminiferous tubules are ______.
In spermatogenesis, reduction division of chromosome occurs during conversion of ______.
1st polar body is formed at which stage of oogenesis?
Select the correct sequence of stages of spermatogenesis in a human male ______.
What does the figure represent?
Observe the given figure and answer the questions that follow.
- Label A and B.
- Identify the process.
- What happens during this process and what is formed?
In human females, meiosis II is not completed until:
Capacitation refers to changes in the ______.
How many primary oocytes produce one oogonia?
During oogenesis the meiotic division is arrested at ______ before fertilization.
Complete the analogy with respect to the structure of sperm.
Nebenkern : ‘X’ : : Acrosome is formed from : ‘Y’
