How many organisms in the list given below are Photoautotrophs? Lactobacillus, Nostoc, Chara, Nitrosomonas, Nitrobacter, Streptomyces, Saccharomyces, Trypanosoma, Porphyra, Wolffia.
Correct answer: A. Four
- A. Four
- B. Five
- C. Six
- D. Three
Explanation
Photoautotrophs are organisms that can synthesize their own food using sunlight as an energy source. In the list provided, the photoautotrophs are:Nostoc: A cyanobacterium capable of photosynthesis.Chara: A green alga that performs photosynthesis.Porphyra: A type of red alga known for photosynthesis.Wolffia: A type of aquatic plant that is photosynthetic.The other organisms in the list are not photoautotrophs:Lactobacillus: A heterotrophic bacterium.Nitrosomonas: A chemoautotrophic bacterium involved in the nitrogen cycle, relying on inorganic compounds for energy.Nitrobacter: Similar to Nitrosomonas, it is also chemoautotrophic.Streptomyces: A heterotrophic bacterium that decomposes organic matter.Saccharomyces: A heterotrophic yeast.Trypanosoma: A parasitic protozoan that is heterotrophic.Therefore, the correct answer is that four organisms are photoautotrophs, while the rest are not.
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About Kingdom Prokaryotae
Kingdom Prokaryotae includes bacteria and cyanobacteria, organisms with no membrane-bound nucleus or membrane-bound organelles. It covers their cell wall, capsule, flagella, plasmids, forms of nutrition, binary fission, useful and harmful roles, and the differences between prokaryotic cells and eukaryotic cells.
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