Question

Green prokaryotes with heterocysts are (A) Methanogens (B) Blue green alga (C) Halophiles (D) Thermoacidophiles​

Answer 1

Answer:

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Explanation:

Correct option is

(a), (b), (d)

1. Microorganisms that produce methane as their metabolic by-product are known as methanogens. These are classified as Archaea and are distinct from bacteria.

2. Most of the blue-green Algae that fixes atmospheric nitrogen belong to the orders Nostocales and Stigonematales. Under this, we can find filamentous Nostoc along with other genera such as Anabaena, Anabaenopsis, Aulosira, Chlorogloea, Cylindrospermum, Calothrix, Scytonema, Tolypothrix and Fischerella.

3. Mycoplasma, a genus of bacteria lack cell walls around their cell. These species of Mycoplasma which is the smallest bacterial cells can either be parasitic or saprophytic and can survive without oxygen.

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