EASY
NEET
IMPORTANT
Earn 100

Read the following statements and select the correct options that are true for cyanobacteria:

(a) The colonies are generally surrounded by a gelatinous sheath.

(b) They form blooms in polluted water bodies.

(c) They show nitrogenase activity in heterocyst.

(d) They perform oxygenic photosynthesis in a vegetative cell only.

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Important Questions on Biological Classification

EASY
NEET
IMPORTANT

How many statements are correct for the given organism in figure?

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(i) Filamentous cyanobacteria as oxygenic photoautotroph.

(ii) Surrounded by mucilaginous sheath.

(iii) Heterocyst are specialized for N2 fixation.

(iv) Reproduce by hormogonia formation.