DP Biology (first assessment 2025)
Question 19N.2.SL.TZ0.4
| Date | November 2019 | Marks available | [Maximum mark: 4] | Reference code | 19N.2.SL.TZ0.4 |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Explain, State | Question number | 4 | Adapted from | N/A |
4.
[Maximum mark: 4]
19N.2.SL.TZ0.4
(a)
State the immediate consequence of a species producing more offspring than the environment can support.
[1]
Markscheme
competition/lack of resources/death/exceeding carrying capacity ✔
Allow a description of it.
Do not allow “overpopulation” or “natural selection”.
(b)
Explain the consequence of overpopulation on the survival and reproduction of better adapted individuals within a population.
[3]
Markscheme
a. «better adapted» tend to survive more ✔
b. «better adapted» reproduce/produce more offspring ✔
c. pass on characteristics to their offspring «when they reproduce» ✔
d. their frequency increases «within the population» due to natural selection ✔
e. leading to evolution ✔
