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Ninth Grade (Grade 9) Human Reproduction Questions

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Grade 9 Human Reproduction
When does conception, or fertilization, occur?
  1. An egg matures in a female's ovary.
  2. All 23 pairs of chromosomes are present.
  3. A dominant gene overrides a recessive gene.
  4. Sperm from a male unites with an egg from a female.
Grade 9 Human Reproduction
What gland controls the start (onset) of puberty?
  1. adrenal
  2. pituitary
  3. salivary
  4. thyroid
Grade 9 Human Reproduction
Blood and nutrients are carried from the mother to the developing fetus through the
  1. cervix.
  2. endometrium.
  3. umbilical cord.
  4. Fallopian tubes.
Grade 9 Human Reproduction
The overall physical changes that occur in male and female bodies during puberty are called
  1. adolescent syndrome.
  2. premenstrual syndrome.
  3. estrogen and testosterone.
  4. secondary sex characteristics.
Grade 9 Human Reproduction
Identify components of internal fertilization. Select all that apply.
  1. Female lays the eggs.
  2. Sperm cell enters the egg.
  3. The embryo develops through mitosis and cell division.
  4. A zygote is formed.
  5. They smoke a cigarette.
  6. Male deposits sperm inside the female's body.
Grade 9 Human Reproduction
Grade 9 Human Reproduction
What is fertilization?
  1. joining of a sperm
  2. joining of a sperm and egg cell
  3. joining of an egg cell
Grade 9 Human Reproduction
A zygote is a
  1. two-celled embryo.
  2. solid ball of about 50 cells.
  3. blastocyst.
  4. fertilized egg.
Grade 9 Human Reproduction
Grade 9 Human Reproduction
The correct order of the reproductive anatomy of a female human from the outermost to the innermost structures is
  1. cervix, uterus, body of uterus, vagina, ovary.
  2. clitoris, vulva, vagina, cervix, uterus, oviduct, ovary.
  3. body of the uterus, uterine horn, ovary, oviduct, cervix.
  4. oviduct, ovary, cervix, uterus, vagina.
Grade 9 Human Reproduction
What is the function of the placenta?
  1. mixing the blood of the mother and fetus
  2. protecting the fetus from any drugs or alcohol in the mother's body
  3. providing nutrients to the fetus
  4. cushioning and protecting the fetus
Grade 9 Human Reproduction
Where does human fertilization tend to take place?
  1. cervix
  2. uterus
  3. epididymis
  4. fallopian tubes
Grade 9 Human Reproduction
Grade 9 Human Reproduction
What is the vulva?
  1. humans, animals, or plants
  2. the external portions of the female genitalia
  3. the period between the infection of a person and the onset of symptoms
  4. any large groups of sub-microscopic organisms
Grade 9 Human Reproduction
Another name for identical twins is
  1. chromosome.
  2. monogyzotic.
  3. dizyogotic.
  4. conception.
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