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प्रश्न
The eggs of frogs do not have shells for protection, yet they are safe in water, how?
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उत्तर
Frog’s eggs are without any external covering or shell but a layer of jelly hold the eggs together, thus providing them protection.
This jelly or gelatinous covering also protects them from drying up and prevents them from being eaten up by other animals or predators.
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संबंधित प्रश्न
Define the term Gamete.
State whether the following statement is true or false:
Gestation in humans is completed in about 380 days.
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'.
Give Reasons
The acrosome of sperm secretes an enzyme called hyaluronidase at the time of fertilization
Give Technical Term:
What term is used for the production and maturation of sperms in the testes?
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:
Sperm is a highly motile male gamete.
Which of the following occurs due to the process of capacitation?
Fertilization of the ovum generally takes place in the ______.
Match the pair:
| 'A' | 'B' | ||
| (1) | Male | (a) | 44 + XX |
| (b) | 44 + XY | ||
| (c) | 44 + YY |
