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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
State whether the following statement is true (T) or false (F):
The plumule of an embryo gives rise to the root system.
Define the term Gamete.
Name the following:
The part where the sperms are produced in the testes
The diagram given below is that of a developing human foetus in the womb. Study the same and answer the question that follow:
How many days does the foetus take to be fully developed?
Give Reasons
The oviduct funnel is lined with cilia.
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.
Write a short note on fallopian tube.
Which of the following occurs due to the process of capacitation?
Give any four significances of fertilization in humans.
Match the pair:
| 'A' | 'B' | ||
| (1) | Male | (a) | 44 + XX |
| (b) | 44 + XY | ||
| (c) | 44 + YY |
