Question

I.$\quad$ Unicellular, colonial, filamentous, marine or terrestrial forms II. $\quad$The colonies are surrounded by a gelatinous sheath III.$\quad$ Some can fix atmospheric nitrogen in specialised cells called$\quad$ $\quad$ $\quad$ $\quad$heterocysts IV. $\quad$They often form blooms in water bodies These above characters are seen in

• A. Archaebacteria
• B. Cyanobacteria
• C. Chrysophytes
• D. Dinoflagellates

Answer 1

Answer: (B)

Cyanobacteria

Answer 2

Answer (b) Cyanobacteria