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प्रश्न
Give any four significances of fertilization in humans.
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उत्तर
- The secondary oocyte completes the process of oogenesis and is transformed into a mature ovum (n).
- The diploid chromosome number is restored in the zygote by the process of syngamy.
- The ovum lacks the centrioles necessary for further divisions, which are received from the sperm during fertilization.
- Fertilization involves the fusion of male and female gametes from the two parents. It results in variations that are significant to evolution.
- The sex of the offspring is determined.
Notes
Students should refer to the answer according to their question.
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संबंधित प्रश्न
Define the term Gamete.
The middle piece of sperm provides:
State whether the following statement is true or false:
Gestation in humans is completed in about 380 days.
Name the following:
Fusion of sperm and ovum.
Name the following:
Virgin birth
The following diagram represents the vertical sectional view of the human female reproductive system.
What happens to the uterus, if fertilization fails to take place?
The diagram given below is that of a developing human foetus in the womb. Study the same and answer the question that follow:
Name (any one) hormone produced by the part labelled '2'.
Where does fertilization occur?
Give Reasons
Gametes have a haploid (n) number of chromosomes.
Give Reasons
Millions of sperms are produced at ejaculation yet one sperm actually fertilizes the ovum. Explain.
Differentiate between tubectomy and vasectomy.
Explain the Term Vas deferens.
Give Technical Term:
A method of contraception in which the sperm duct is cut and ligated.
Complete the following sentences with appropriate word:
The process of releasing an egg from the ovary is called _________.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
The process of fusion of the sperm nucleus and the egg nucleus is termed implantation.
Write the functional activity of the following structure:
Prostate gland
Explain the mechanism of fertilization in humans.
Choose the odd one out from the group of terms given below and write the category for the remaining terms:
How long after ovulation can the ovum be fertilized?
