Advertisements
Advertisements
प्रश्न
The fusion of the male and the female gametes is called ______.
Advertisements
उत्तर
The fusion of the male and the female gametes is called fertilisation.
Explanation:
The process of fusion of a sperm with an ovum is called fertilisation. During fertilisation, a sperm comes into contact with the zona pellucida layer of the ovum and induces changes in the membrane that block the entry of additional sperms. Thus, it ensures that only one sperm can fertilise an ovum.
APPEARS IN
संबंधित प्रश्न
Women are often blamed for producing female children. Consequently, they are ill-treated and ostracized. How will you address this issue scientifically if you were to conduct an awareness programme to highlight the values involved?
Male and female gametes are ______.
Name the hormones involved in regulation of spermatogenesis.
Describe the process of budding in hydra.
In case of sexual reproduction, newborn show similarities about characters. Explain this statement with suitable examples.
Explain the structure of secondary oocyte.
Sex organs produce gametes which are diploid.
Formation of ____________ is an indication of the termination of oogenesis.
Calculate the number of sperms and ova produced from 40 primary spermatocytes and 40 primary oocytes.
Identify the longest period of menstrual cycle.
Identify the CORRECT sequence of events.
The immature male germ cells differentiates into ______ at the end of meiosis I.
Which of the following events take place during spermatogenesis?
Extrusion of second polar body from egg nucleus occurs ______.
Acrosome reaction in sperm is triggered by ______.
After ovulation, Graafian follicle regresses into ______.
There is no cell division involved in ______.
Which among the following has 23 chromosomes?
Identify the wrong statement from the following.
How many sperms are formed from 4 primary spermatocytes?
Which one is released from the ovary?
Mark the odd one.
Aquatic animals in which fertilisation occurs in water are said to be
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?
Distinguish between human sperm and ovum.
The diagram given below shows the various steps in spermatogenesis.
- Name the parts labelled '1', '2' and '3'.
- Name the process by which part '3' changes to part '4'.
The process of gametogenesis is initiated by ______ and ______ hormones respectively.
Select a correct pair of cells with identical set of chromosomes.
At the onset of puberty, gonadotropin releasing hormone is secreted by ______.
