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प्रश्न
How can plants and animals save themselves from extinction?
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उत्तर
Genetic variation helps the organisms to adjust with the changing environment and thereby to maintain their existence. Due to this, plants and animals can save themselves from being extinct.
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संबंधित प्रश्न
Mention the function of Seeds.
Choose the odd one in each of the following:
Sperm; implantation; fertilization; ovum; afterbirth
The figure given alongside represents the female reproductive system of a mammal.
Name the parts labelled A - D
Name the following:
Virgin birth
The following diagram represents the vertical sectional view of the human female reproductive system.
How does the uterus prepare for the reception of zygote?
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'.
Write in sequence the regions in which a mature sperm travels from the seminiferous tubules up to the urethral opening?
Give Reasons
The acrosome of sperm secretes an enzyme called hyaluronidase at the time of fertilization
Draw a labeled diagram of sperm.
Give a labeled structure of ovum.
Give Technical Term:
What term is used for the production and maturation of sperms in the testes?
Give Technical Term:
The place where fertilization occurs in the female reproductive system.
Complete the following sentences with appropriate word:
The process of releasing an egg from the ovary is called _________.
Answer the following question.
What is capacitation? Give its importance.
Describe the process of fertilization.
State whether the following statement is True or False. If false, correct the statement:
Human egg has a head, middle piece and tail.
Fertilization takes place in ______.
Choose the odd one out from the group of terms given below and write the category for the remaining terms:
Write the specific location of the following:
Acrosome
