Question

Characteristics features of nostoc​

Answer 1

Answer:

Nostoc, genus of blue-green algae with cells arranged in beadlike chains that are grouped together in a gelatinous mass. Ranging from microscopic to walnut-sized, masses of Nostoc may be found on soil and floating in quiet water. Reproduction is by fragmentation.

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Answer 2

• All Nostoc species are filamentous and have complex life cycles involving cellular differentiation.

• Their non-branching filaments consist of cylindrical or spherical vegetative cells with intercalary heterocysts, large specialized nitrogen-fixing cells developing in mature trichomes.

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