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(C) Autotrophic nutrition involves the manufacture of organic materials from inorganic raw materials using energy obtained from external sources. It i

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Six

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(C) Autotrophic nutrition involves the manufacture of organic materials from inorganic raw materials using energy obtained from external sources. It is of two types: chemosynthesis and photosynthesis.$1$. Chemoautotrophs: Organisms that manufacture organic food from inorganic raw materials using energy derived from exergonic chemical reactions. In the given list,$Nitrosomonas$ and $Nitrobacter$ are chemoautotrophic nitrifying bacteria.$2$. Photoautotrophs: Organisms that manufacture organic compounds from inorganic raw materials using solar energy in the presence of photosynthetic pigments. In the given list,$Nostoc$ (cyanobacteria),$Chara$ (algae),$Porphyra$ (algae),and $Wolffia$ (angiosperm) are photoautotrophs.Total autotrophs = $2$ (chemoautotrophs) + $4$ (photoautotrophs) = $6$.Therefore,the correct option is $C$.

How many organisms in the list given below are autotrophs?
Lactobacillus,Nostoc,Chara,Nitrosomonas,Nitrobacter,Streptomyces,Saccharomyces,Trypanosoma,Porphyra,Wolffia

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How many organisms in the list given below are autotrophs?Lactobacillus,Nostoc,Chara,Nitrosomonas,Nitrobacter,Streptomyces,Saccharomyces,Trypanosoma,Porphyra,Wolffia