Human Reproduction

Human-reproduction

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(Credits to Mustafa Asif)

1. When is ovulation most likely to occur?

a. about halfway between the start of one menstruation and the next

b. at the start of menstruation

c. 1-5 days before the start of menstruation

d. 5-10 days after the start of menstruation

2.Chimpanzees have 48 chromosomes in each normal body cell. How many chromosomes does a chimpanzee gamete contain?

a. 23

b. 24

c. 46

d. 48

3. The skin cells of an animal contain 8 chromosomes. How many chromosomes will be present in each of the gametes produced by this animal?

a. 16

b. 8

c. 4

d. 2

4. In human reproduction, which sequence of events is correct?

a. menstruation --> ovulation --> fertilisation --> implantation

b. menstruation --> ovulation --> implantation --> fertilisation

c. ovulation --> menstruation --> fertilisation --> implantation

d. ovulation --> menstruation --> implantation --> fertilisation

5. The diagram shows the 28 days of the menstrual cycle. When does the lining of the uterus break down?

6. The diagram shows the female reproductive system. In which parts are the eggs and the zygote formed?

eggs zygote

a. 1 2

b. 1 3

c. 2 1

d. 2 3

1. a

2. b

3. c

4. a

5. a

6. c