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
Draw a diagram of the microscopic structure of human sperm. Label the following parts in it and write their functions:
- Acrosome
- Nucleus
- Middle piece
Describe the process of spermatogenesis with the help of diagram.
Mention the differences between spermiogenesis and spermatogenesis.
Give a schematic representation of spermatogenesis and oogenesis in humans.
Identify the given image and label its parts marked as a, b, c and d
Identify the proper order of spermatogenesis and choose the correct option.
In human beings, the largest cell formed during Oogenesis is ______
Conversion of spermatid into sperm is called as _______.
By which process sperms released from the seminiferous tubules?
Which of the following contains a fluid filled cavity called antrum?
There is no cell division involved in ______.
Connective tissue around seminiferous tubules possess endocrine cells called ______.
The cell which undergoes meiosis I during spermatogenesis is the ______.
Cavity of graafian follicle is ______.
A reaction of granules content which harden the zona pellucida and ensures sure block to polyspermy is ______.
The head of the epididymis at the head of the testis is called ______.
The process of release of spermatozoa from Sertoli cells into cavity of the seminiferous tubules is called ______.
During oogenesis, each diploid cell produces ______.
Which of the following is a primary sex organ of female?
Mark the odd one.
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?
Sperms can be stored for several years in liquid nitrogen with a temperature of ______.
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:
Human milk differs from cow's milk because human milk contains:
Process of maturation and development of sperms ______.
Meiotic division of the secondary oocyte completed ______.
What is spermatogenesis?
In our society the women are often blamed for giving birth to daughters. Can you explain why this is not correct?
During oogenesis the meiotic division is arrested at ______ before fertilization.
