Fertilisation and Early Development in Biology
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Questions and Answers

What is the role of testosterone and estrogen in the development of secondary sexual characteristics during puberty?

  • They induce changes like the growth of pubic hair and maturation of sexual organs. (correct)
  • They are responsible for the differentiation of reproductive organs in utero.
  • They cause the release of digestive enzymes in sperm.
  • They stimulate growth of primary sexual organs.

    • What is the process of fusion between a male gamete and a female gamete called?

  • Implantation
  • Conception
  • Fertilisation (correct)
  • Germination

    • What is a primary sexual characteristic?

  • Differences in reproductive organs between males and females during development. (correct)
  • Changes occurring during puberty.
  • Stimulation of primary sex organs by the pituitary gland.
  • Changes that occur in target organs upon puberty.

    • What is the function of the umbilical cord in the development of a fetus?

    <p>Carries deoxygenated blood and waste products from the fetus to the placenta</p> Signup and view all the answers

    During the menstrual cycle, what does FSH secreted by the Pituitary Gland stimulate?

    <p>Maturation of one follicle in the ovary.</p> Signup and view all the answers

    What is the function of amniotic fluid during pregnancy?

    <p>Protects the fetus against mechanical shock, drying out, and temperature fluctuations</p> Signup and view all the answers

    What is a characteristic feature of sperm (male gamete)?

    <p>Small in size</p> Signup and view all the answers

    Which part of the female reproductive system is responsible for exchange of soluble materials between mother and fetus?

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

    What is a secondary sexual characteristic?

    <p>Changes that occur during puberty, like growth of pubic hair.</p> Signup and view all the answers

    What process occurs when the zygote divides over and over to form a ball of cells called an embryo?

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

    What are the key differences between primary and secondary sexual characteristics?

    <p>Primary are present during development, while secondary occur during puberty as children become adolescents.</p> Signup and view all the answers

    What is the function of flagellum in sperm cells?

    <p>Propels the sperm to swim.</p> Signup and view all the answers

    What hormone is secreted by the Corpus Luteum to keep the endometrium thick, waiting for possible embryo implants?

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

    On which day of the menstrual cycle does ovulation typically occur?

    <p>Day 14</p> Signup and view all the answers

    What triggers the release of the egg from the follicle into the fallopian tube?

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

    What hormone is secreted by the follicle and ovarian tissues to prepare the endometrium?

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

    In which scenario does the Corpus Luteum degenerate due to lack of progesterone?

    <p>Egg not fertilized</p> Signup and view all the answers

    Which hormone triggers the formation of Corpus Luteum in the ovary?

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

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