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प्रश्न
The eggs of frogs do not have shells for protection, yet they are safe in water, how?
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
Choose the odd one in each of the following:
Sperm; implantation; fertilization; ovum; afterbirth
One egg is released from each of the two ovaries every month.
Define the following:
Ovulation
Give Reasons
The oviduct funnel is lined with cilia.
Differentiate
External fertilization and Internal fertilization.
Complete the following sentences with appropriate word:
___________ hormones are secreted by the interstitial cells.
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.
Explain the mechanism of fertilization in humans.
Fertilization of the ovum generally takes place in the ______.
State whether the following statement is True or False. If false, correct the statement :
External fertilisation can occur both in water and on land.
