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Which of these statements about Mycoplasma is/are true?
I. Mycoplasma is the smallest cell known.
II. They are not prokaryotic in nature.
III. They can respire only in the presence of oxygen.
IV. They lack cell walls.
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Important Questions on Biological Classification
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Match the following lists:
| List-I | List-II | ||
| (A) | Photoautotroph | (I) | Nitrosomonas |
| (B) | Chemoautotroph | (II) | Rhodospirillum |
| (C) | Photoheterotroph | (III) | Salmonella |
| (D) | Chemoheterotroph | (IV) | Chlorobium |
The correct match is:
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I. Cyanobacteria are referred to as blue-green algae.
II. They perform oxygenic photosynthesis in chloroplasts.
II. The red-colour of red-sea is due to the presence of a cyanobacterial species Trichodesmium erythraeum.
IV. All the cyanobacterial species can fix atmospheric in specialised cells called heterocysts.
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Given below are two statements:
Statement : Mycoplasma can pass through less than 1 micron filter size.
Statement : Mycoplasma are bacteria with cell wall.
In the light of the above statements, choose the most appropriate answer from the options given below:
