Question

Which is sensitive to longer wavelengths of light

• A. PS II
• B. PS I
• C. Phosphorylation
• D. Photolysis.

Answer 1

Answer: (B)

PS I

Photosystems are the functional and structural unit of photosynthesis that contains chlorophyll and various electron carriers that helps in energy liberation.

These are divided into two in which photosystem I absorb light of wavelength 700 nm and photosystem II which absorbs light of wavelength 680 nm.

So the correct option is 'PS I'.