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प्रश्न
What are seasonal breeders? Give an example.
उत्तर
Seasonal breeders are organisms that perform breeding and have active reproductive cycles during particular breeding season e.g.. Birds
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संबंधित प्रश्न
What would be the ratio of chromosome number between an egg and its zygote?
Put a tick mark (✓) against the correct alternative in the following statement:
Which one of the following represents the correct sequence in the life history of a butterfly ?
- Egg → Larva → Adult → Pupa
- Egg → Pupa → Adult → Larva
- Egg → Larva → Pupa → Adult
- Egg → Pupa → Larva → Adult
Differentiate between the following:
Sperm and Ovum
Answer the following question.
It is commonly observed that parents feel embarrassed to discuss freely with their adolescent children about sexuality and reproduction. The result of this parental inhibition is that the children go astray sometimes.
Explain the reasons that you feel are behind such embarrassment amongst some parents to freely discuss such issues with their growing children.
Animals which give birth to young ones directly are named as ______.
Give reason for the following:
A male honey bee has 16 chromosomes whereas a female has 32 chromosomes.
Due to presence of which of the following chemical component, pollen grains can remain well preserved in fossil?
______ fertilisation takes place in frogs and fish.
Name the two ways by which fertilisation in animals takes place.
What is external fertilisation?
