Gradelings

Grade 9 · Science · Unit 12 of 17

Human Reproductive System

Structures, functions and hormones, explained simply.

What your child practises

Practises the structure and function of the human reproductive system and the role of hormones, in plain scientific terms. Families may wish to read it together.

Manitoba Curriculum learning outcome: SCI.9.E.17 · structure, function and hormonal regulation of the human reproductive system

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    Why is the menstrual cycle different for different people?

    • it depends on the weather only
    • bodies vary in hormones and timing
    • it is the same for everyone
    Show answer

    bodies vary in hormones and timing

    Hint: Differences are normal.

  2. Question 2

    The structure that delivers food and oxygen to a developing fetus is the…

    • vas deferens
    • ovary
    • placenta
    Show answer

    placenta

    Hint: The umbilical cord connects the fetus to the placenta.

  3. Question 3

    How long is a typical human pregnancy?

    • about 2 years
    • about 4 weeks
    • about 40 weeks
    Show answer

    about 40 weeks

    Hint: That is about nine months.

  4. Question 4

    Fertilization usually happens in the…

    • fallopian tube (oviduct)
    • bladder
    • uterus wall
    Show answer

    fallopian tube (oviduct)

    Hint: Egg and sperm meet in the tube.

  5. Question 5

    A main female sex hormone is…

    • estrogen
    • testosterone
    • adrenaline
    Show answer

    estrogen

    Hint: It is produced mostly in the ovaries.

  6. Question 6

    During pregnancy, the fetus is surrounded by fluid in the…

    • stomach
    • lung
    • amniotic sac
    Show answer

    amniotic sac

    Hint: It cushions and protects.