DP Biology (first assessment 2025)

Test builder »

Question 22N.1A.SL.TZ0.12

Select a Test
Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1A.SL.TZ0.12
Level SL Paper 1A Time zone TZ0
Command term Question number 12 Adapted from N/A
12.
[Maximum mark: 1]
22N.1A.SL.TZ0.12

Absorption spectra of two photosynthetic pigments are shown. Phycoerythrin is a red pigment found in many marine red algae, while chlorophyll a is the major pigment in green plants and algae.

What do the absorption spectra show about the pigments?

A.  Phycoerythrin absorbs mostly red light.

B.  Chlorophyll a reflects more green light than phycoerythrin.

C.  Chlorophyll a photosynthesizes more at 550 nm than phycoerythrin.

D.  Phycoerythrin does not absorb blue light.

[1]

Markscheme

B

Syllabus sections