Gr 9 NATURAL SCIENCES: CH 1.3 Stages of reproduction
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Questions and Answers

What is the primary function of the placenta during pregnancy?

  • To provide nutrients and oxygen to the embryo (correct)
  • To form the umbilical cord
  • To produce hormones
  • To facilitate contractions during labor

    • How long does a typical human pregnancy last?

  • 40 weeks (correct)
  • 60 weeks
  • 50 weeks
  • 30 weeks

    • What is the term for the inability to conceive after a year of regular, unprotected intercourse?

  • Infertility (correct)
  • Sterility
  • Impotency
  • Conception

    • What is the condition caused by consuming alcohol during pregnancy?

    <p>Foetal Alcohol Syndrome (D)</p> Signup and view all the answers

    What is the tube that connects the embryo to the placenta?

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

    What is the term for the process by which the uterus contracts to push the fetus's head into the vagina?

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

    What is the term for diseases that can be transmitted during sexual intercourse?

    <p>Sexually Transmitted Diseases (STDs) (D)</p> Signup and view all the answers

    What is the term for the process by which the embryo develops into a fetus?

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

    What is the percentage of heterosexual couples affected by infertility?

    <p>10% (B)</p> Signup and view all the answers

    What is the result of the delivery of the placenta at the end of pregnancy?

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

    What is the typical duration of the female reproductive cycle?

    <p>28-30 days (D)</p> Signup and view all the answers

    What is the process of releasing a mature egg from the ovaries?

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

    What happens to the uterine lining if the egg is not fertilized?

    <p>It is shed and expelled from the body (B)</p> Signup and view all the answers

    What is the process of fertilization?

    <p>The penetration of the egg by a sperm (B)</p> Signup and view all the answers

    What happens to the sperm that penetrate the egg?

    <p>Only one sperm can penetrate the egg (A)</p> Signup and view all the answers

    What is the journey of sperm after ejaculation?

    <p>They swim through the cervix, into the uterus, and towards the oviducts (D)</p> Signup and view all the answers

    What is the result of a sperm fertilizing an egg?

    <p>The formation of a zygote (C)</p> Signup and view all the answers

    What is the process of the zygote implanting into the uterine lining?

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

    What is the purpose of the thickened uterine lining?

    <p>To prepare for potential implantation of a fertilized egg (C)</p> Signup and view all the answers

    What happens if the sperm does not penetrate the egg?

    <p>The egg is released from the body (C)</p> Signup and view all the answers

    What is the primary function of ovulation in the female reproductive cycle?

    <p>To release a mature egg from the ovaries for potential fertilization (B)</p> Signup and view all the answers

    What happens to the uterine lining during ovulation?

    <p>It thickens and becomes rich in blood vessels (A)</p> Signup and view all the answers

    What is the result of fertilization in the female reproductive cycle?

    <p>The formation of a zygote (A)</p> Signup and view all the answers

    What is the purpose of the sperm's journey through the female reproductive system?

    <p>To fertilize the egg and form a zygote (A)</p> Signup and view all the answers

    What is the outcome if the egg is not fertilized during ovulation?

    <p>The uterine lining is shed from the body (A)</p> Signup and view all the answers

    What is the stage of development after fertilization in the female reproductive cycle?

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

    Where does fertilization typically occur in the female reproductive cycle?

    <p>In the oviducts (Fallopian tubes) (A)</p> Signup and view all the answers

    What happens to the sperm that penetrate the outer membrane of the egg?

    <p>The head of the sperm enters the egg, while the tail remains outside (A)</p> Signup and view all the answers

    What is the purpose of the thickened uterine lining during ovulation?

    <p>To support the implantation of a fertilized egg (A)</p> Signup and view all the answers

    What is the outcome of the male reproductive system's role in the reproductive cycle?

    <p>The deposition of sperm into the female vagina (B)</p> Signup and view all the answers

    What is the primary role of the umbilical cord?

    <p>To facilitate the exchange of nutrients and oxygen between the embryo and placenta (B)</p> Signup and view all the answers

    During which stage of pregnancy does the embryo develop into a fetus?

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

    What is a possible consequence of Sexually Transmitted Diseases (STDs) on fertility?

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

    What is the result of the mother and embryo's collaborative effort during pregnancy?

    <p>Formation of the placenta (D)</p> Signup and view all the answers

    What is the typical duration of human pregnancy?

    <p>40 weeks (A)</p> Signup and view all the answers

    What is the term for the lifelong physical, behavioral, and cognitive impairments caused by alcohol consumption during pregnancy?

    <p>Foetal Alcohol Syndrome (D)</p> Signup and view all the answers

    What is the purpose of the contractions during labor and birth?

    <p>To push the fetus's head into the vagina (B)</p> Signup and view all the answers

    What is the approximate percentage of heterosexual couples affected by infertility?

    <p>10% (B)</p> Signup and view all the answers

    What is the significance of understanding the stages of pregnancy and potential health issues?

    <p>To recognize the importance of reproductive health (A)</p> Signup and view all the answers

    What is the role of the placenta in facilitating the exchange of nutrients and oxygen?

    <p>It provides nutrients and oxygen to the embryo (B)</p> Signup and view all the answers

    What is the primary mechanism by which the embryo receives nutrients and oxygen during pregnancy?

    <p>Placental exchange of nutrients and oxygen (B)</p> Signup and view all the answers

    Which of the following is NOT a potential consequence of consuming alcohol during pregnancy?

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

    What is the primary function of the uterine contractions during labor and birth?

    <p>Pushing the fetus's head into the vagina (B)</p> Signup and view all the answers

    Which of the following is a potential health issue related to reproduction?

    <p>Foetal Alcohol Syndrome (C)</p> Signup and view all the answers

    What is the approximate duration of the gestation period?

    <p>40 weeks (B)</p> Signup and view all the answers

    What is the term for the connection between the embryo and the placenta?

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

    What is the primary cause of infertility in heterosexual couples?

    <p>Various factors in both men and women (B)</p> Signup and view all the answers

    What is the term for diseases that can be transmitted during sexual intercourse?

    <p>Sexually transmitted diseases (D)</p> Signup and view all the answers

    What is the stage of development during which the embryo develops into a fetus?

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

    What is the primary outcome of the mother and embryo's collaborative effort during pregnancy?

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

    What triggers the shedding of the uterine lining during the reproductive cycle?

    <p>The absence of fertilization (B)</p> Signup and view all the answers

    What is the primary function of the oviducts during the reproductive cycle?

    <p>To facilitate the fertilization of the egg (B)</p> Signup and view all the answers

    What is the result of the thickened uterine lining if the egg is fertilized?

    <p>It provides a site for implantation (D)</p> Signup and view all the answers

    How do the sperm travel through the female reproductive system?

    <p>They swim through the cervix and uterus (C)</p> Signup and view all the answers

    What is the purpose of the uterine lining during the reproductive cycle?

    <p>To prepare for potential implantation of a fertilized egg (D)</p> Signup and view all the answers

    What prevents additional sperm from entering the egg after fertilization?

    <p>The surface change of the egg (B)</p> Signup and view all the answers

    What is the stage of development after fertilization in the female reproductive cycle?

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

    What is the result of the fertilization process in the female reproductive cycle?

    <p>The formation of a zygote (B)</p> Signup and view all the answers

    Where does the fertilization of the egg typically occur?

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

    What is the primary function of ovulation in the female reproductive cycle?

    <p>To release a mature egg from the ovaries (D)</p> Signup and view all the answers

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