Assertion : Bacterial photosynthesis occurs by utilizing wavelength longer than `700` nm.
Reason : Here reaction centre is `B-890`.

Options

A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reason is false
D. If both the assertion and reason are false

Answer

B

Explanation

Although bacteriochiorophyll resembles chlorophyll it absorbs light of a longer wavelength than chlorophyll. Bacteria that contain bacteriochlorophyll donot use water as an electron don and therefore do not produce oxygen. Its reaction centre is 890. This is known as anoxygenic photosynthesis.