An organism that performs photosynthesis but does not release any molecular oxygen during the process is:

Pigments phycocyanin and phycoerythrin are found in

Which of the following are called bacteria without cell wall?

Identify the correct statement regarding bacteria.

Given below are two statements:
Statement $I$: Mycoplasma can pass through less than $1 \ \mu m$ filter size.
Statement $II$: Mycoplasma are bacteria with cell wall.
In the light of the above statements,choose the most appropriate answer from the options given below:

Which domain of organisms can survive in extreme conditions?