Question

Select the incorrect statement
(1)Nostoc and Anabaena have heterocysts for
nitrogen fixation
(2)Cyanobacteria often form blooms in polluted
water bodies
(3)Heterotrophic bacteria are more abundant in
nature
(4) The cell wall of Mycoplasma are made up of
chitin

Answer 1

Answer:

2. Cyanobacteria often form blooms in polluted water bodies

Answer 2

Answer:

(4) The cell wall of Mycoplasma is made up of chitin

Explanation:

Mycoplasma is the smallest among bacteria. They lack cell walls, which makes them resistant to antibiotics that target cell wall synthesis. These are also known by the name PPLO (pleuropneumonia-like organisms). Their shape is filamentous. The colony morphology on agar is like fried-egg shaped. Most of their species are infectious to the animals.

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