Reproduction in Animals
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Questions and Answers

What is the result of fertilization in animals?

  • Formation of a zygote (correct)
  • Laying of eggs
  • Release of sperms
  • Development of an embryo

    • All eggs laid by animals are fertilized and develop into new individuals.

    False (B)

    Why is it necessary for animals to produce a large number of eggs and sperms?

    To ensure the successful fertilization of at least a few eggs, given the challenges like exposure to water movement, wind, rainfall, and predation.

    The developing structure within the uterus is called an ______.

    <p>embryo</p> Signup and view all the answers

    Match the following terms with their corresponding definitions:

    <p>Zygote = The initial stage of development following fertilization Embryo = The developing structure within the uterus Fertilization = The process of union between sperm and egg Tissue = A group of similar cells performing a specific function</p> Signup and view all the answers

    Which of the following animals is an example of an oviparous animal?

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

    Internal fertilization occurs in hens.

    <p>True (A)</p> Signup and view all the answers

    What is the name given to the protective layer that forms around the developing embryo in a hen's egg?

    <p>Hard shell</p> Signup and view all the answers

    The process of an embryo developing inside an egg outside the mother's body is called ______.

    <p>oviparity</p> Signup and view all the answers

    Which of the following statements is TRUE about viviparous animals?

    <p>They give birth to live young. (C)</p> Signup and view all the answers

    The developing embryo in a hen's egg takes about 3 weeks to develop into a chick.

    <p>True (A)</p> Signup and view all the answers

    What is the name given to the young stage of a frog that lives in water and breathes through gills?

    <p>Tadpole</p> Signup and view all the answers

    Match the following animals with their reproductive strategy:

    <p>Hen = Oviparous Cow = Viviparous Lizard = Oviparous Cat = Viviparous</p> Signup and view all the answers

    Animals that give birth to live young are called ______ animals.

    <p>viviparous</p> Signup and view all the answers

    What is the process of reproduction that involves the fusion of male and female gametes called?

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

    Dolly the sheep was a clone of a Scottish blackface ewe.

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

    The fusion of an ovum and sperm is called ______.

    <p>fertilization</p> Signup and view all the answers

    What is the name given to the fertilized egg?

    <p>Zygote</p> Signup and view all the answers

    Which of the following animals reproduce through internal fertilization?

    <p>Hens (A)</p> Signup and view all the answers

    External fertilization occurs inside the female's body.

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

    The repeated division of a zygote gives rise to an ______.

    <p>embryo</p> Signup and view all the answers

    What are the two main types of reproduction in animals?

    <p>Sexual and Asexual reproduction</p> Signup and view all the answers

    Dolly the sheep lived a long and healthy life.

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

    The transformation of a larva into an adult through drastic changes is called ______.

    <p>metamorphosis</p> Signup and view all the answers

    Human beings undergo metamorphosis just like frogs.

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

    Which of the following is NOT a distinct stage in the life cycle of a frog?

    <p>Caterpillar (C)</p> Signup and view all the answers

    Describe the appearance of a tadpole compared to an adult frog.

    <p>Tadpoles are aquatic, have tails, lack legs, and have gills for breathing underwater. Adult frogs are terrestrial, have legs for hopping, lack tails, and have lungs for breathing air.</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Metamorphosis = A type of reproduction involving only one parent Asexual Reproduction = A biological process of significant physical changes Budding = A form of asexual reproduction in hydra Larva = The early stage of an organism's development after hatching from an egg</p> Signup and view all the answers

    Which of the following is an example of asexual reproduction?

    <p>A hydra producing buds (C)</p> Signup and view all the answers

    All animals undergo metamorphosis during their life cycle.

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

    How does budding occur in hydra?

    <p>Budding in hydra involves the development of a small outgrowth called a bud on the parent's body. The bud grows and eventually detaches, becoming a new, independent hydra.</p> Signup and view all the answers

    The new individuals developing as outgrowths from the parent body in hydra are called ______.

    <p>buds</p> Signup and view all the answers

    Yeast and hydra both exhibit asexual reproduction.

    <p>True (A)</p> Signup and view all the answers

    Fertilization is essential for both asexual and sexual reproduction.

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

    Which of the following is NOT a method of asexual reproduction in animals?

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

    The ______ is the stage of development in which the embryo becomes embedded in the uterus.

    <p>embryo</p> Signup and view all the answers

    What is the primary difference between a zygote and a foetus?

    <p>A zygote is a single cell formed by the fusion of a sperm and egg, while a foetus is a more developed multicellular organism.</p> Signup and view all the answers

    Study Notes

    Reproduction in Animals

    • Reproduction is crucial for species continuation
    • Animals reproduce through sexual or asexual methods
    • Sexual reproduction involves fusion of male and female gametes (ova and sperm), forming a zygote.
    • Sexual reproduction can be either internal or external.
    • Internal fertilization occurs inside the female body. Examples: humans, cows, dogs, and hens.
    • External fertilization occurs outside the female body in water. Example: frogs, fish.
    • Asexual reproduction involves a single parent. Example: Hydra, budding.
    • Another asexual reproduction method is binary fission, where a single-celled organism divides into two. Example: Amoeba.
    • Reproduction produces similar individuals through generations.

    Modes of Reproduction

    • Animals can reproduce sexually or asexually.
    • Viviparous animals give birth to live young. Example: human beings, cows, dogs
    • Oviparous animals lay eggs that develop outside the mother's body. Example: hens, frogs.
    • Animals reproduce in different ways to adapt to different environments.

    Male Reproductive Organs

    • The male reproductive organs include testes, sperm ducts, and penis.
    • Testes produce sperms (male gametes).
    • Sperms are single cells with head, mid-piece, and tail.

    Female Reproductive Organs

    • The female reproductive organs include ovaries, oviducts (fallopian tubes), and uterus.
    • Ovaries produce ova (female gametes).
    • Ova are also single cells.

    Fertilization

    • Fertilization is the fusion of sperm and ovum.
    • Internal fertilization occurs inside the female body.
    • External fertilization occurs outside the female body.

    Development of Embryo

    • Fertilization leads to zygote formation.
    • The zygote develops into an embryo.
    • Embryos eventually develop into young ones.
    • Development occurs inside or outside the female body.

    Viviparous and Oviparous Animals

    • Viviparous animals give birth to live young. Example: humans
    • Oviparous animals lay eggs. Example: hens
    • Different animals have different reproductive strategies that are often adapted to their environment.

    Asexual Reproduction

    • Asexual reproduction involves a single parent.
    • Budding is a type of asexual reproduction, where new individuals develop from buds on the parent. Example: hydra
    • Binary fission is a type of asexual reproduction where the parent divides into two individuals. Example: amoeba.

    Cloning

    • Cloning is producing genetically identical copies (clones) of living organisms.
    • Dolly the sheep was one of the first cloned mammals.

    Life Cycle of Frogs

    • Frogs undergo metamorphosis (a drastic change in form) during their life cycle.
    • The frog's life cycle progresses from egg to tadpole to adult (frog).

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    Reproduction in Animals PDF

    Description

    Explore the fascinating methods of reproduction in animals, including both sexual and asexual processes. Learn about internal and external fertilization, and the differences between viviparous and oviparous species. This quiz will enhance your understanding of how reproduction is vital for the continuation of species.

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