Question

Which of the following statements regarding cyanobacteria is incorrect $?$

Answer 1

Incorrect statement
Statement (b): They are chemosynthetic autotrophs
Elaboration: Chemosynthetic autotrophs are those organisms that are capable of making their own food using the energy derived by the oxidation of chemical substances such as sulphur, nitrites, and so on.
Cyanobacteria have chlorophyll, as a result, they can use energy from the sun to synthesize organic compounds and hence, are called photosynthetic autotrophs. Hence, statement (b) is incorrect.