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प्रश्न
In markets, eggs of birds are available but never eggs of dogs. why?
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उत्तर
Birds are oviparous, i.e., lay eggs outside their body. So, it is easy to collect their eggs and these are thus available in the market.
On the contrary, dogs are viviparous, i.e., do not lay eggs but give birth to young ones. Their eggs are extremely small and remain inside their bodies.
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संबंधित प्रश्न
Write in sequence the regions in which a mature sperm travels from the seminiferous tubules up to the urethral opening?
What is fertilization? Name the site of fertilization in the human females.
Give Reasons
Millions of sperms are produced at ejaculation yet one sperm actually fertilizes the ovum. Explain.
Differentiate
External fertilization and Internal fertilization.
Differentiate
Isogametes and Heterogametes.
Explain the Term Vas deferens.
Multiple Choice Question:
Fertilization means:
Multiple Choice Question:
Ovulation in mammals is a process in which
Write the specific location of the following:
Acrosome
During copulation, approximately how much semen containing how many spermatozoa is deposited in the vagina?
