D3.1 Reproduction Final Revision

D3.1 Reproduction Final Revision

12th Grade

20 Qs

quiz-placeholder

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D3.1 Reproduction Final Revision

D3.1 Reproduction Final Revision

Assessment

Quiz

Science

12th Grade

Medium

Created by

Jiezhu, Carolyn Khoo

Used 1+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The first day of the menstrual cycle is when menstruation begins. What occurs around day 15 of the cycle?

Formation of a corpus luteum

The placenta starts to secrete progesterone

The end of menstruation

Blood progesterone concentration reaches its maximum

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which step occurs in both spermatogenesis and oogenesis?

First division of meiosis is stopped in prophase I until puberty begins.

Germinal epithelium cells divide by mitosis.

At the end of the first division in meiosis, the cytoplasm is divided equally between daughter cells.

Four haploid gametes are produced at the end of meiosis II.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of HCG in pregnancy?

It is secreted by the embryo to stimulate progesterone secretion by the ovary during early pregnancy.

Together with oxytocin, it is involved in the positive feedback required for uterine contractions during birth.

It sustains the secretion of progesterone by the placenta throughout pregnancy.

It stimulates the ovary to maintain secretion of estrogen in early pregnancy.

4.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

The diagram shows the position of the fetus at childbirth. Which hormone stimulates contractions of muscle cellsin the region labelled X?

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which hormone stimulates contractions of muscle cells in the region labelled X?

Estrogen

Oxytocin

Progesterone

Thyroxin

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

In preparation for IVF, women are first treated with drugs, followed by artificial doses of hormones. What is the purpose of each step?

A

B

C

D

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes the role of oestradiol in regulating pituitary hormone secretion during the menstrual cycle?

High levels of oestradiol inhibit LH secretion and stimulate FSH secretion.

Low levels of oestradiol stimulate LH and FSH secretion via positive feedback.

High levels of oestradiol before ovulation stimulate LH secretion via positive feedback.

High levels of oestradiol after ovulation stimulate LH and FSH secretion via negative feedback.

Answer explanation

Explanation: In the late follicular phase, rising oestradiol levels exert positive feedback on the anterior pituitary, leading to a surge in LH that triggers ovulation.

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