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Questions and Answers
Reproduction is essential for the continuation of a ______.
Reproduction is essential for the continuation of a ______.
species
The two modes of reproduction in animals are sexual and ______ reproduction.
The two modes of reproduction in animals are sexual and ______ reproduction.
asexual
In sexual reproduction, male and female reproductive parts produce ______.
In sexual reproduction, male and female reproductive parts produce ______.
gametes
The zygote develops into a new ______.
The zygote develops into a new ______.
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Young ones of different animals include baby humans, kittens, and ______.
Young ones of different animals include baby humans, kittens, and ______.
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The male reproductive organs include a pair of ______, two sperm ducts and a penis.
The male reproductive organs include a pair of ______, two sperm ducts and a penis.
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Sperms produced by the testes have a head, a middle piece and a ______.
Sperms produced by the testes have a head, a middle piece and a ______.
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The female reproductive organs include a pair of ovaries, oviducts and the ______.
The female reproductive organs include a pair of ovaries, oviducts and the ______.
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In human beings, a single matured egg is released into the ______ by one of the ovaries every month.
In human beings, a single matured egg is released into the ______ by one of the ovaries every month.
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In addition to the sperm, a human ______ is also classified as a single cell.
In addition to the sperm, a human ______ is also classified as a single cell.
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The transformation of the larva into an adult through drastic changes is called __________.
The transformation of the larva into an adult through drastic changes is called __________.
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The life cycle of a frog includes three distinct stages: egg, __________, and adult.
The life cycle of a frog includes three distinct stages: egg, __________, and adult.
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The new individuals developing from the parent hydra are called __________.
The new individuals developing from the parent hydra are called __________.
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Dolly was a healthy clone of the Finn Dorsett sheep and produced several offspring through normal sexual ______.
Dolly was a healthy clone of the Finn Dorsett sheep and produced several offspring through normal sexual ______.
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A type of reproduction that involves only a single parent is called __________ reproduction.
A type of reproduction that involves only a single parent is called __________ reproduction.
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The fusion of ovum and sperm is called ______.
The fusion of ovum and sperm is called ______.
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The early developmental stage of frogs after hatching is known as __________.
The early developmental stage of frogs after hatching is known as __________.
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Fertilisation that takes place outside the female body is called ______ fertilisation.
Fertilisation that takes place outside the female body is called ______ fertilisation.
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The ______ divides repeatedly to give rise to an embryo.
The ______ divides repeatedly to give rise to an embryo.
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Cloned animals are often found to be born with severe ______.
Cloned animals are often found to be born with severe ______.
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Study Notes
Reproduction in Animals
- Reproduction is essential for the continuation of a species
- Reproduction ensures the continuation of similar individuals
- Two modes of animal reproduction: sexual and asexual
Modes of Reproduction
- Animals reproduce sexually or asexually
- Young animals develop in different ways
- Examples: Human (baby), Cat (kitten), Dog (puppy), Hen (chick), Cow, Frog, Butterfly
Sexual Reproduction
- Involves the fusion of male and female gametes
- Male and female reproductive organs/parts differ
- Male reproductive organs: testes, sperm ducts, penis
- Female reproductive organs: ovaries, oviducts (fallopian tubes), uterus
- Sperms are produced in testes
- Ova are produced in ovaries
- Fertilisation: Fusion of sperm and ovum
- Fertilised egg (zygote) develops into an embryo
- Internal fertilisation: Takes place inside the female body (humans, cows, dogs, hens)
- External fertilisation: Takes place outside the female body (frogs, fishes, starfish)
Development of Embryo
- Fertilisation leads to zygote formation
- Zygote divides to become a ball of cells
- These cells form tissues and organs
- Embryo develops within the uterus or egg
- Embryo transforms into a foetus, recognisable as a baby.
Viviparous and Oviparous Animals
- Viviparous animals give birth to live young (humans, cows, dogs)
- Oviparous animals lay eggs (hens, frogs, butterflies, moths, fish)
- Frog eggs are laid with jelly-like protective layer in water.
- External fertilisation in oviparous animals
- Embryonic development usually occurs inside egg.
Asexual Reproduction
- Asexual reproduction involves only one parent
- Methods include budding (in hydra) and binary fission (in amoeba)
- Budding: New individuals develop as outgrowths from a parent.
- Binary fission: Division of a single cell into two identical cells.
Cloning
- Cloning: Producing an exact copy of a cell, living organism
- Dolly the sheep: First cloned mammal (produced by transferring a nucleus to an egg without nucleus)
Keywords
- Asexual, Binary fission, Budding, Eggs, Embryo, External fertilisation, Fertilisation, Foetus, Internal fertilisation, Metamorphosis, Oviparous animals, Sexual Reproduction, Sperms, Viviparous animals, Zygote
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Description
Test your understanding of the various modes of reproduction in animals, focusing on sexual and asexual methods. Explore how different species, including humans, cats, and frogs, reproduce and develop their young. This quiz will help you solidify your knowledge of animal reproductive systems.
