Reproduction in Organisms Quiz
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Questions and Answers

What is the primary purpose of reproduction?

  • To prevent extinction
  • To maintain species continuity (correct)
  • To produce food
  • To facilitate growth

    • Asexual reproduction requires two organisms to reproduce.

    False

    What is formed when a sperm and an ovum fuse together?

    zygote

    Animals that produce only one type of reproductive cell are termed __________ animals.

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

    Which of the following methods is NOT a form of asexual reproduction?

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

    Match the reproductive terms with their definitions:

    <p>Gametes = Reproductive cells produced by males and females Fertilisation = Fusion of male and female gametes to form a zygote Hermaphrodites = Organisms possessing both male and female reproductive organs Unisexual = Organisms that produce one type of reproductive cell</p> Signup and view all the answers

    Fertilisation can occur both externally and internally.

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

    Name one example of an organism that reproduces externally.

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

    What is the main function of the prostate gland?

    <p>To secrete prostate fluid</p> Signup and view all the answers

    The urethra carries only urine at all times.

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

    What type of cells do the testes produce?

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

    The _______ is where fertilization occurs and connects the ovaries to the uterus.

    <p>fallopian tube</p> Signup and view all the answers

    What happens to unused eggs in the ovaries?

    <p>They disintegrate and pass out during menstruation</p> Signup and view all the answers

    Match the following reproductive organs with their primary functions:

    <p>Ovaries = Produce egg cells Uterus = Nurtures the fertilized egg Cervix = Connects uterus to the vagina Prostate Gland = Secretes fluid for semen</p> Signup and view all the answers

    Testosterone is produced in the ovaries.

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

    What is the role of the penis in the male reproductive system?

    <p>To transfer urine and sperm</p> Signup and view all the answers

    What is the stage of an embryo called when all body parts can be identified?

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

    The mother determines the sex of the baby.

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

    How many chromosomes are there in total in each cell of a human being?

    <p>46</p> Signup and view all the answers

    Males have __________ sex chromosomes.

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

    What weight range does a baby typically fall into at birth?

    <p>6 to 8 pounds</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Zygote = The fertilized egg cell Embryo = An early stage of development before it becomes identifiable Foetus = The stage where all body parts are identifiable Chromosomes = Structures that carry genetic information</p> Signup and view all the answers

    There is a 50% probability of having male or female children in each pregnancy.

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

    What types of sex chromosomes do females possess?

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

    What type of fertilisation occurs when the fusion of a male and female gamete happens outside the female body?

    <p>External fertilisation</p> Signup and view all the answers

    All the eggs laid by aquatic animals result in fertilisation and develop into new individuals.

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

    What is formed after the fertilisation of an egg in internal fertilisation?

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

    In humans, the complete development of the embryo takes place inside the female's __________.

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

    Match the following animals with the type of fertilisation they exhibit:

    <p>Fish = External fertilisation Hen = Internal fertilisation Earthworm = Internal fertilisation Starfish = External fertilisation</p> Signup and view all the answers

    Which of the following statements is true regarding internal fertilisation?

    <p>The eggs are fertilised inside the female body.</p> Signup and view all the answers

    Hermaphrodites such as earthworms fertilise their own eggs.

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

    What is the role of the scrotum in the male reproductive system?

    <p>It holds the testes in place.</p> Signup and view all the answers

    Which of the following is NOT an example of a viviparous animal?

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

    The process in which a hen provides warmth to her eggs is called gestation.

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

    What is the term used for the transformation of larva into an adult in insects?

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

    Animals that lay eggs are called __________ animals.

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

    Match the following types of animals with their reproductive method:

    <p>Cat = Viviparous Frog = Oviparous Elephant = Viviparous Fish = Oviparous</p> Signup and view all the answers

    How long does it typically take for a chick to develop from an egg?

    <p>21 days</p> Signup and view all the answers

    Viviparous animals give birth to live young ones.

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

    What happens during the hatching process?

    <p>The chick breaks open the eggshell.</p> Signup and view all the answers

    Viviparous species rely on __________ for embryo development.

    <p>maternal nutrition</p> Signup and view all the answers

    What hormone controls the development of tadpoles into adults?

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

    Amoeba reproduces asexually through the process of budding.

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

    What is the primary way that hydra reproduces asexually?

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

    In the absence of sufficient iodine, tadpoles cannot become _____ adults.

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

    Which organism undergoes binary fission?

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

    Match the type of twins with their description:

    <p>Identical Twins = Formed from one egg and one sperm cell Non-identical Twins = Formed from two different egg and sperm cells</p> Signup and view all the answers

    Plasmodium reproduces sexually.

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

    What are fraternal twins scientifically known as?

    <p>Dizygotic twins</p> Signup and view all the answers

    Study Notes

    Reproduction in Organisms

    • Reproduction is the process of producing organisms of one's own kind, essential for the continuity of life on Earth.
    • There are two main types of reproduction: sexual and asexual.
    • Sexual reproduction involves two organisms of the same species, usually a male and a female.
    • Asexual reproduction involves only a single parent.

    Sexual Reproduction

    • Involves two individuals of the same species.
    • Involves the fusion of male (sperm) and female (egg) gametes.
    • Produces offspring with a combination of genetic material from both parents.
    • Common in plants and animals.

    Asexual Reproduction

    • Involves only one parent.
    • No fusion of gametes.
    • Offspring are genetically identical to the parent.
    • Common in many organisms, including some plants and simple animals.

    Fertilisation

    • Fertilisation is the fusion of male and female gametes.
    • Two types of fertilisation: external and internal.
    • External fertilisation occurs outside the body of the female.
    • Internal fertilisation occurs inside the body of the female.

    Viviparous Animals

    • Viviparous animals give birth to live young.
    • The embryo develops inside the mother's body, receiving nourishment from her.
    • Examples include humans, cats, dogs, and whales.

    Oviparous Animals

    • Oviparous animals lay eggs.
    • The embryo develops outside the mother's body, receiving nourishment from the yolk inside the egg.
    • Examples include birds, reptiles, and some fish.

    Metamorphosis

    • Metamorphosis is the transformation from larva to adult in some animals.
    • There are significant changes in body form and function.
    • Common in insects and amphibians.

    Asexual Reproduction Methods

    • Binary Fission: Cell division in which a single cell divides into two identical daughter cells. (Amoeba)
    • Budding: A new organism develops as an outgrowth (bud) from the parent organism. (Hydra)

    Sex Determination

    • The sex of a child is determined by the combination of sex chromosomes, one from each parent (XX for female, XY for male).
    • Male gametes (sperm) carry either an X or Y chromosome.
    • Female gametes (egg) always carry an X chromosome.
    • The sperm determines the sex of the child.

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    Reproduction 8th Grade PDF

    Description

    Test your knowledge on the key concepts of reproduction in organisms, including sexual and asexual methods. This quiz will cover the processes of fertilisation and the implications for genetic diversity. Prepare to explore how these reproductive strategies ensure the continuity of life.

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