Which of the following are likely to be present in deep-sea hydrothermal vents?

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 of the following is a correct statement?

An organism lacking chlorophyll but able to carry on photosynthesis of organic matter has been found among which one of the following?

Organisms that obtain energy by the oxidation of reduced inorganic compounds are called .....

How many of the following organisms are prokaryotic?
Bacteria,Blue-green algae,Fungi,Porifera,Echinodermata,Moss,Bryophytes,Pteridophytes,Gymnosperms,Ctenophora,Angiosperms