DP Biology (first assessment 2025)

Test builder »

Question SPM.1A.HL.TZ0.33

Select a Test
Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.HL.TZ0.33
Level HL Paper 1A Time zone TZ0
Command term Question number 33 Adapted from N/A
33.
[Maximum mark: 1]
SPM.1A.HL.TZ0.33

Polyploidy has been a cause of rapid speciation in some plant genera, such as Helianthus. Which observation is evidence that speciation has occurred?


A.  A polyploid plant reproduces asexually.

B.  A polyploid plant produces male and female gametes.

C.  Fertile offspring are produced when a polyploid plant crosses with a diploid plant.

D.  Fertilization can occur between polyploid individuals.

[1]

Markscheme

D

Syllabus sections