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Science / Reproduction in Animals

The Cell - Structure and Functions Reaching The Age Of Adolescence

Science / Reproduction in Animals

  • Living organisms give birth to young ones to ensure the continuity of life, unbroken from generation to generation. Both animals and plants reproduce either asexually (involves single parent) or sexually (involves two parents).
  • Sexual reproduction takes place with the help of sex cells called Gametes, Sperms (produced by the male) and Ovum or Egg (female). 
  • An ovum and a sperm combine in a process called Fertilisation to form a Zygote.
  • Fertilisation may occur external (outside the body) or internal (inside the female body). In humans, the male reproductive organs are the testes and the female reproductive organs are the ovaries. Fertilisation in humans occurs in the oviduct of the female and the zygote develops in the uterus before being born. The zygote grows by cell division to form the embryo which develops into the foetus. Some lay eggs(oviparous) like the birds and reptiles and some give birth to young ones(viviparous) like cats, dogs, humans.
  • All living beings undergo drastic changes during growth and development from one form to another, this is called Metamorphosis e.g. In a butterfly: egg -> caterpillar -> pupa -> adult. Revise asexual reproduction in amoeba by fission and hydra by budding.
learning card for Types of Reproduction View Lessons & Exercises for Types of Reproduction →
learning card for Life Cycle of Butterfly View Lessons & Exercises for Life Cycle of Butterfly →
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  • Reproduction in Animals - SmartTest

    A SmartTest on Reproduction in Animals

    • Accessed by: 382 Students
    • Average Time: 00:02:35
    • Average Score: 63.65
    • Questions: 33
    View as Registered User
    • Introduction to Reproduction in Animals
    • Binary Fission - Amoeba
    • Reproduction in human beings - Male and Female reproductive organ
    • Review of Reproduction in Animals
    • Sexual Reproduction in Animals -Types of Fertilization
    • Fertilization and Development of Zygote in Human
    • Oviparous and viviparous animals
    • Metamorphosis
    • Review of Reproduction in Animals

  • Reproduction in Animals -- Summary

    Learnhive Lesson on Reproduction in Animals

    • Accessed by: 453 Students
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Factoids

In some females fertilisation may not take place due to unfavourable conditions. For such cases invitro fertilisation (IVF) became a boon in the medical field. Invitro fertilization (IVF) is a procedure in which eggs (ova) from a woman's ovary are removed.

They are fertilized with sperm in a laboratory procedure, and then the fertilized egg (embryo) is returned to the woman's uterus. Babies produced by this method are called test tube babies.

The Cell - Structure and Functions Reaching The Age Of Adolescence

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