DP Biology (last assessment 2024)

Test builder »

Question 20N.1.SL.TZ0.21

Select a Test
Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1.SL.TZ0.21
Level SL Paper 1 Time zone TZ0
Command term Question number 21 Adapted from N/A
21.
[Maximum mark: 1]
20N.1.SL.TZ0.21

What would restrict evolution by natural selection, if a species only reproduced by cloning?

A. Too few offspring would be produced.

B. Mutations could not occur.

C. The offspring would show a lack of variation.

D. The offspring would be the same sex as the parent.

[1]

Markscheme

C

Examiners report

This was another example of a question where a high percentage of candidates answered correctly and the discrimination index was therefore low. In this case there was widespread understanding of the consequences of cloning for the rate of evolution by natural selection.

Syllabus sections