How many organisms in the list given below show autrophic nutriti…

MCQ

How many organisms in the list given below show autrophic nutrition method ?

Lactobacillus, Nostoc, Chara, wolffia, Nistrosomonas, Nitrobacter, porphyra Streptococus, Saccharomyces, Trypanosoma,

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Answer

Correct option: C.

Six

c
Autotrophic bacteria synthesize their cell constituents using carbon dioxide as the carbon source.

From the list, autotrophic bacteria include a total of six as Chara, Nostoc, Porphyra, Wolfia, Nitrosomonas, Nitrobacter.

Of these Chara, Nostoc, Porphyra, Wolfia is photoautotrophs while Nitrosomonas, Nitrobacter are chemoautotrophs.

The other four (Lactobacillus, Streptomyces, Saccharomyces, Trypanosoma) are heterotrophs meaning they utilize organic compounds as a source of food.

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