Animal Reproduction Basics
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Questions and Answers

What is formed as a result of the fusion of the sperm and ovum during fertilisation?

  • Zygote (correct)
  • Ovum
  • Embryo
  • Sperm

Which type of fertilisation occurs within the female body?

  • Internal fertilisation (correct)
  • Substantial fertilisation
  • Artificial fertilisation
  • External fertilisation

Which of the following characteristics is inherited by individuals from their parents?

  • Only characteristics of the father
  • All characteristics of the mother
  • Some characteristics from both parents (correct)
  • Only physical characteristics

What is notable about the fertilisation process in frogs compared to hens?

<p>Frog's eggs are not covered by a shell. (B)</p> Signup and view all the answers

Which animal is NOT mentioned as having internal fertilisation?

<p>Frogs (D)</p> Signup and view all the answers

What is the primary purpose of in vitro fertilisation (IVF)?

<p>To allow fertilisation to occur outside the body (C)</p> Signup and view all the answers

Why are babies born through IVF commonly referred to as test-tube babies?

<p>Due to the perception that they are an artificial product (D)</p> Signup and view all the answers

In which type of organisms is external fertilisation most commonly found?

<p>Aquatic animals (B)</p> Signup and view all the answers

What happens to the zygote after fertilisation occurs in IVF?

<p>It is allowed to develop for about a week. (B)</p> Signup and view all the answers

Why do fish and frogs lay numerous eggs compared to hens, which typically lay only one egg at a time?

<p>To ensure higher chances of survival for offspring (B)</p> Signup and view all the answers

Flashcards

Fertilization

The fusion of a sperm cell and an egg cell to form a zygote.

Zygote

A fertilized egg, created when the nuclei of the sperm and ovum fuse.

Internal Fertilization

Fertilization that takes place inside the female's body.

Ovum

The female reproductive cell, also known as an egg cell.

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Sperm

The male reproductive cell.

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In Vitro Fertilization (IVF)

A process where an egg is fertilized by a sperm outside of the body, in a laboratory setting.

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Test-tube baby

A baby conceived through IVF. It's a common term, but technically inaccurate as the baby doesn't develop in a test tube.

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Why do frogs lay hundreds of eggs?

Frogs lay many eggs because external fertilization is less efficient. Many eggs may not be fertilized, and some eggs may be eaten by predators.

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Why do birds lay one egg at a time?

Birds lay one egg at a time because they have internal fertilization, which is more efficient. The fertilized egg is protected inside the female's body.

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Study Notes

Reproduction in Animals

  • Reproduction is essential for the continuation of species
  • Reproduction in animals ensures the continuation of similar kinds of individuals
  • Two modes of animal reproduction: sexual and asexual
  • Sexual reproduction involves the fusion of male and female gametes (ova and sperm)
  • Sexual reproduction begins with fertilization leading to zygote formation
  • Internal fertilization: occurs inside the female body
  • External fertilization: occurs outside the female body
  • Viviparous animals: give birth to live young
  • Oviparous animals: lay eggs
  • Some animals undergo metamorphosis: a change in form from larva to adult

Male Reproductive Organs

  • Includes testes, sperm ducts, and penis
  • Testes produce millions of sperms (male gametes)
  • Each sperm has a head, mid-piece, and tail

Female Reproductive Organs

  • Includes ovaries, oviducts (fallopian tubes), and uterus
  • Ovaries produce ova (female gametes)
  • Uterus is where the developing embryo grows

Fertilisation

  • Fusion of sperm and ovum to form a zygote
  • Zygote develops into an embryo
  • Internal fertilization occurs inside the female body
  • External fertilization occurs outside the female body

Development of Embryo

  • Zygote divides repeatedly to form a ball of cells
  • These cells develop into different tissues and organs
  • The embryo gets embedded in the wall of the uterus
  • Embryo develops into a foetus
  • Foetus develops into a baby

Viviparous and Oviparous Animals

  • Viviparous animals give birth to live young ones
  • Oviparous animals lay eggs

Asexual Reproduction

  • Involves one parent
  • Types include budding (hydra) and binary fission (amoeba)
  • Budding: new individuals develop as outgrowths from a parent
  • Binary fission: parent divides into two new individuals

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Reproduction in Animals PDF

Description

This quiz covers the fundamental concepts of reproduction in animals, including sexual and asexual methods, as well as the anatomy of male and female reproductive organs. Test your knowledge on fertilization, gametes, and the life cycles of various species.

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