Reproduction in Animals Quiz
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Questions and Answers

What type of reproduction involves only one parent and produces genetically identical offspring?

  • Binary fission
  • Sexual reproduction
  • Asexual reproduction (correct)
  • Multiple fission

    • In sexual reproduction, offspring are genetically identical to the parent.

    False

    Name one organism that reproduces through binary fission.

    Amoeba

    In budding, a new individual forms from a small ______ on the parent body.

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

    Which of the following is an example of multiple fission?

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

    What is the main difference between viviparous and oviparous animals?

    <p>Viviparous animals give birth to live young, while oviparous animals lay eggs.</p> Signup and view all the answers

    The incubation period for a hen's egg is typically 21 days.

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

    Match the form of asexual reproduction with its description:

    <p>Binary Fission = Parent cell divides into two daughter cells Multiple Fission = Repeated division into multiple cells Budding = New individual forms from a bud Parthenogenesis = Egg develops without fertilization</p> Signup and view all the answers

    Parthenogenesis is a form of sexual reproduction.

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

    What do we call the protective layer around an egg that is primarily made of calcite?

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

    In _____ development, the young one at birth resembles a miniature version of the adult form.

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

    What outcome would occur if Amoebas could reproduce without any limitations?

    <p>They would multiply rapidly and potentially cover the entire planet.</p> Signup and view all the answers

    Match the following reproductive methods with their definitions:

    <p>Viviparous = Embryo develops inside the mother's body. Oviparous = Embryo develops outside the mother's body in eggs. Direct development = Young ones resemble miniature adults. Indirect development = Young ones look very different from adult forms.</p> Signup and view all the answers

    Which of the following best describes external fertilisation?

    <p>Gametes are shed into the surrounding environment for fertilisation.</p> Signup and view all the answers

    Animal offspring produced by sexual reproduction are genetically identical to their parents.

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

    What is a hermaphrodite animal?

    <p>An animal that produces both male and female gametes.</p> Signup and view all the answers

    The new individual resulting from budding is called a __________.

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

    Match the following types of reproduction with their descriptions:

    <p>External Fertilisation = Fertilisation occurs in the surrounding environment Internal Fertilisation = Fertilisation occurs within the female body Budding = New individual develops as a smaller part of the parent Sexual Reproduction = Formation and fusion of gametes from two parents</p> Signup and view all the answers

    Which animal is an example of external fertilisation?

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

    In budding, the new organism completely detaches from the parent immediately after formation.

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

    Name an animal that exhibits budding.

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

    What is the term used for a significant change in an animal's structure and habits during its life cycle?

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

    Tadpoles possess lungs for respiration throughout their life.

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

    What is the first physical change that occurs in a tadpole during metamorphosis?

    <p>Development of hind legs</p> Signup and view all the answers

    In the life cycle of a frog, the ______ stage follows the egg stage and is characterized by swimming in water.

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

    Match the following stages of a frog's life cycle with their characteristics:

    <p>Egg = Laid in water Tadpole = Has gills and a tail Adult Frog = Has lungs and legs Metamorphosis = Transition from tadpole to adult</p> Signup and view all the answers

    What is the correct order of processes from fertilization to the birth of a child?

    <p>Sperm fuses with egg → Zygote forms → Embryo develops → Foetus is born</p> Signup and view all the answers

    The first test-tube baby was born in 1998.

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

    What term is used to describe babies conceived through In Vitro Fertilisation?

    <p>test-tube babies</p> Signup and view all the answers

    When a sperm fuses with an egg, it forms a __________.

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

    Match the terms related to reproduction with their definitions:

    <p>Ovaries = Produce eggs and hormones Zygote = Single cell formed after fertilization Embryo = Cluster of cells after zygote division Foetus = Developed embryo visible with body parts</p> Signup and view all the answers

    What are non-identical twins formed from?

    <p>Two eggs fertilized at the same time</p> Signup and view all the answers

    The process of fertilization occurs in the uterus.

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

    What happens to the zygote immediately after its formation?

    <p>It divides into two cells.</p> Signup and view all the answers

    Which type of reproductive pattern involves fertilization occurring outside the female body and development occurring externally as well?

    <p>External fertilization and external development</p> Signup and view all the answers

    In the female reproductive system, the ovaries are responsible for producing and transporting sperm.

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

    What is the purpose of semen in the male reproductive system?

    <p>To carry sperm during ejaculation.</p> Signup and view all the answers

    The ______ develops in the uterus after fertilization occurs in the female reproductive system.

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

    Match the following components of the male reproductive system with their functions:

    <p>Testes = Produce sperm Scrotum = Regulates temperature for sperm production Urethra = Conducts semen and urine Penis = Delivers sperm to the female body</p> Signup and view all the answers

    Which of the following components is NOT part of the female reproductive system?

    <p>Sperm ducts</p> Signup and view all the answers

    What is the role of the tail in a sperm cell?

    <p>To propel the sperm towards the egg.</p> Signup and view all the answers

    Humans exhibit external fertilization and internal development.

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

    Study Notes

    Reproduction in Animals

    • Reproduction is the process of creating offspring.
    • Two types of reproduction exist: asexual and sexual.

    Asexual Reproduction

    • A single parent produces offspring without gamete fusion.
    • Offspring are genetically identical to the parent.
    • Examples include:
      • Binary Fission: A parent cell splits into two daughter cells (e.g., bacteria, amoeba).
      • Multiple Fission: A parent cell divides repeatedly into smaller daughter cells (e.g., Plasmodium).
      • Budding: A new individual forms as a bud on the parent's body and remains attached until separation (e.g., Hydra, yeast).
    • Parthenogenesis is a form of asexual reproduction where females produce eggs that develop without fertilization (e.g., aphids, daphnia, rotifers, some invertebrates, and plants).

    Reproductive Patterns

    • Animals are categorized based on fertilization and development sites.
    • External Fertilization and External Development: -Sperms and eggs are released into water for fertilization.
      • Zygotes develop externally.
      • Large numbers of gametes are released simultaneously.
      • Example: Frogs.
    • Internal Fertilization and External Development:
      • Sperms are transferred inside the female.
      • Fertilization occurs within the female.
      • The zygote is enclosed in protective layers, including a shell with nutrients.
      • Example: Hens.
    • Internal Fertilization and Internal Development:
      • Fertilization and embryo development occur inside the female body.
      • Example: Humans, elephants, cows.

    Sexual Reproduction

    • Offspring are produced through the fusion of gametes from two parents.
    • Offspring are not genetically identical to their parents.
    • Male gametes (sperm) are produced in the male reproductive part.
    • Female gametes (eggs or ova) are produced in the female reproductive part.
    • Fertilization occurs when sperm and ovum unite, forming a zygote.
    • Animals with few offspring often dedicate more resources to nurturing and protecting their offspring.

    Ovaries and the Foetus

    • Ovaries produce eggs.
    • When a sperm fuses with an egg, a zygote forms.
    • The zygote divides and develops into the young one.
    • Ovaries produce hormones that regulate egg production and pregnancy maintenance.

    In Vitro Fertilization (IVF)

    • Ova are fertilized by sperm outside the female body.
    • The fertilized egg (zygote) is transferred to the uterus.
    • This technique aims to achieve successful pregnancy.
    • Babies conceived through IVF are called test-tube babies.
    • The first test-tube baby was Louise Brown in 1978.

    Fertilization

    • Fertilization occurs in the oviduct's initial part.
    • The fusion of sperm and ovum (male and female gametes) is called fertilization.
    • Since fertilization occurs within the female body, it is called internal fertilization.
    • During this process, the sperm and egg's nuclei fuse.
    • The resulting single cell is the zygote.
    • The zygote carries genetic material from both parents.

    Development of the Embryo

    • The zygote divides into two cells.
    • These cells continue dividing, forming a cluster of cells called an embryo.
    • The embryo travels to the uterus and implants itself in the uterine lining.
    • The embryo develops different body parts.
    • Once body parts are visible, the embryo is called a fetus.
    • After birth, the fetus is called an infant.

    Key Points:

    • One sperm can fertilize only one ovum.
    • Fertilization of two eggs at the same time results in non-identical twins.
    • Splitting of a fertilized ovum creates identical twins.

    Reproductive Systems

    Male Reproductive System

    • Includes:
      • Testes: Oval organs where sperm is developed.
      • Scrotum: Sac that holds the testes.
      • Sperm Ducts: Tubes that transport sperm.
      • Urethra: Passage for both urine and semen.
      • Penis: Muscular structure surrounding the urethra.
    • Semen is fluid containing sperm and secretions from glands.

    Female Reproductive System

    • Includes:
      • Ovaries: Produce eggs.
      • Oviducts: Tubes that transport eggs and where fertilization occurs.
      • Uterus: Site for embryo implantation and fetal development.
      • Vagina: Passage for menstrual flow, birth, and intercourse.

    The Journey from Young Ones to Adults

    • Young ones develop into adults, regardless of birth method.
    • Direct Development: Young resemble adults at birth.
    • Indirect Development: Young differ significantly from adults, undergoing metamorphosis.

    Life Cycle of a Frog (Metamorphosis)

    • Eggs are laid in water.
    • Tadpole emerges with gills and a tail.
    • Tadpole grows and undergoes metamorphosis:
      • Development of hind legs, then front legs.
      • Development of lungs, transitioning to air breathing.
      • Shortening of the intestine for carnivorous diet.
      • Absorption of the tail, transforming the tadpole into a frog.

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    Description

    Explore the fascinating concepts of reproduction in animals, including asexual and sexual methods. Learn about various modes of asexual reproduction such as binary fission, budding, and parthenogenesis. Test your understanding of reproductive patterns and their implications in the animal kingdom.

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