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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
What is oogenesis?
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?
At the time of birth, there are _______________ oocytes in the ovary of a female foetus.
What is gamete formation?
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?
Sex organs produce gametes which are diploid.
The part labelled as ______ contains the energy source that facilitates sperm motility.
Identify the diploid cell.
Identify the labels (i-iv) in the given diagram of the ovum.
Formation of ____________ is an indication of the termination of oogenesis.
Which of the following occurs during maturation phase of spermatogenesis?
Identify the longest period of menstrual cycle.
Which is the correct order of steps occurring during spermatogenesis?
Which of the following is diploid?
______ undergoes 2nd meiotic division during spermatogenesis.
After ovulation, Graafian follicle regresses into ______.
The cell which undergoes meiosis I during spermatogenesis is the ______.
Gray crescent is the area ______.
Besides activating the egg another role of a sperm is to carry ______ to egg.
The head of the epididymis at the head of the testis is called ______.
Layers of an ovum from outside to inside is ______.
Which of the following is a primary sex organ of female?
After the release of the secondary oocyte, the Graafian follicle develops into ______.
Mark the odd one.
Penetration of the sperm in the ovum is followed by ______
Sperms can be stored for several years in liquid nitrogen with a temperature of ______.
The region of the root tip whose cells undergo rapid elongation and enlargement and are responsible for the growth of the root in length is called the:
Growth hormone of pituitary is more effective in ______.
Which of the following cells during gametogenesis is normally diploid?
The spermatogonia undergo division to produce sperms by the process of spermatogenesis. Choose the correct one with reference to above.
What is the difference between a primary oocyte and a secondary oocyte?
How many spermatozoa are formed from one secondary spermatocyte?
During spermatogenesis meiosis occurs in ______.
Meiotic division of the secondary oocyte completed ______.
Draw a labelled diagram of a section through the ovary.
The process of gametogenesis is initiated by ______ and ______ hormones respectively.
