IB Biology SL C1.3.5 Absorption of Specific Wavelengths Questions

Explore which wavelengths chlorophyll and accessory pigments absorb, which are reflected, and how absorbed light excites electrons for photosynthesis in IB Biology SL C1.3.5.

Exam points

Compare chlorophyll and accessory-pigment absorption across red, blue and green wavelengths, including which light is reflected.
Interpret absorption-spectrum evidence to explain how absorbed wavelengths excite photosynthetic pigments and support photosynthesis.

[Maximum number: 1]

Which type of light is least useful for photosynthesis in terrestrial plants?

A

Blue

B

Green

C

White

D

Red

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