DP Biology (last assessment 2024)
Question 18N.3.HL.TZ0.20
| Date | November 2018 | Marks available | [Maximum mark: 7] | Reference code | 18N.3.HL.TZ0.20 |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Identify, List, State | Question number | 20 | Adapted from | N/A |
20.
[Maximum mark: 7]
18N.3.HL.TZ0.20
The diagram shows part of the control of the pituitary gland by the hypothalamus and, at the same time, the control of secretion in the breasts and the ovary by the pituitary gland.
(a.i)
Using the diagram, identify an organ containing an exocrine gland.
[1]
Markscheme
breast ✔
(a.ii)
Using the diagram, identify a hormone involved in the development of a follicle.
[1]
Markscheme
FSH ✔
(a.iii)
Using the diagram, identify a steroid hormone.
[1]
Markscheme
estrogen
OR
progesterone ✔
(b)
State two effects of prolactin.
[2]
Markscheme
a. growth and development of the breast/mammary gland ✔
b. lactation/synthesis of milk ✔
c. maintenance of milk secretion ✔
(c)
List two hormones produced by the posterior pituitary gland.
[2]
Markscheme
a. oxytocin ✔
b. antidiuretic hormone/ADH/vasopressin ✔