Podcast
Questions and Answers
Birds living in nature lay eggs only ____________
Birds living in nature lay eggs only ____________
seasonally
Birds in captivity, like in poultry farms, can be made to lay eggs ____________ the year
Birds in captivity, like in poultry farms, can be made to lay eggs ____________ the year
throughout
In non-primate mammals like cows, sheep, rats, deers, dogs, tiger, etc., cyclical changes during reproduction are called ____________ cycle
In non-primate mammals like cows, sheep, rats, deers, dogs, tiger, etc., cyclical changes during reproduction are called ____________ cycle
oestrus
Females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts during the ____________ phase
Females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts during the ____________ phase
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Many mammals, especially those living in wild conditions, exhibit reproductive cycles only during ____________ seasons
Many mammals, especially those living in wild conditions, exhibit reproductive cycles only during ____________ seasons
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Some mammals are reproductively active throughout their reproductive phase and are called ____________ breeders
Some mammals are reproductively active throughout their reproductive phase and are called ____________ breeders
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Birds in captivity, like in poultry farms, can be made to lay eggs throughout the year. In this case, laying eggs is not related to reproduction but is a commercial exploitation for human ____________.
Birds in captivity, like in poultry farms, can be made to lay eggs throughout the year. In this case, laying eggs is not related to reproduction but is a commercial exploitation for human ____________.
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In non-primate mammals like cows, sheep, rats, deers, dogs, tiger, etc., cyclical changes during reproduction are called ____________ cycle.
In non-primate mammals like cows, sheep, rats, deers, dogs, tiger, etc., cyclical changes during reproduction are called ____________ cycle.
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Many mammals, especially those living in natural, wild conditions, exhibit such cycles only during favourable ____________ in their reproductive phase and are therefore called seasonal breeders.
Many mammals, especially those living in natural, wild conditions, exhibit such cycles only during favourable ____________ in their reproductive phase and are therefore called seasonal breeders.
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Some mammals are reproductively active throughout their reproductive phase and hence are called ____________ breeders.
Some mammals are reproductively active throughout their reproductive phase and hence are called ____________ breeders.
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Females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts during the reproductive ____________.
Females of placental mammals exhibit cyclical changes in the activities of ovaries and accessory ducts during the reproductive ____________.
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Among animals, birds living in nature lay eggs only ____________.
Among animals, birds living in nature lay eggs only ____________.
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Study Notes
Reproductive Cycles in Animals
- Birds in nature lay eggs only seasonally, whereas those in captivity (poultry farms) can be induced to lay eggs throughout the year for commercial purposes.
- In non-primate mammals (e.g. cows, sheep, rats, deer, dogs, tiger), cyclical changes during reproduction are called oestrus cycle.
- In primates (monkeys, apes, humans), cyclical changes during reproduction are called menstrual cycle.
- Many mammals in natural, wild conditions exhibit reproductive cycles only during favourable seasons and are called seasonal breeders.
- Other mammals are reproductively active throughout their reproductive phase and are called continuous breeders.
Aging and Reproduction
- Growing old is characterized by the end of reproductive capability.
- Reproductive cycles are seasonal in many mammals, while others are continuous throughout their reproductive phase.
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Description
Test your knowledge on the egg laying behavior of animals like birds, frogs, lizards, and placental mammals. Explore the differences between seasonal egg laying in nature and continuous egg production in captivity for commercial purposes.
