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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.
APPEARS IN
संबंधित प्रश्न
Differentiate between:
Semen and sperm
One egg is released from each of the two ovaries every month.
Complete the following statement by choosing the correct alternative:
Fertilization occurs in ______.
Define the following:
Spermatogenesis
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'.
The figure given below represents the female reproductive system of a mammal.
What will happen if the part B on both sides gets blocked?
Name the female sex hormones and structures which secrete them.
Give Reasons
Millions of sperms are produced at ejaculation yet one sperm actually fertilizes the ovum. Explain.
Complete the following sentences with appropriate word:
The sperms in a human male are produced in _____.
Complete the following sentences with appropriate word:
___________ hormones are secreted by the interstitial cells.
Complete the following sentences with appropriate word:
Fertilization of the human egg by the sperm normally occurs in the_______
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:
Vas deferens transports sperms into the urethra.
Multiple choice question.
In human female, the fertilized egg gets implanted in uterus _______.
Which parts are converted into Seed and fruit respectively after fertilization?
Give scientific reason.
The new individual produced by sexual reproduction always has the recombined genes of both the parents.
Explain tubectomy and vasectomy.
Fertilization takes place in ______.
Which structure sweeps the ovum into the fallopian tube after ovulation?
