Which of the following is incorrect about Cyanobacteria?

1. They are photoautotrophs.

2. They lack heterocysts.

3. They often form blooms in polluted water bodies.

4. They have chlorophyll similar to green plants.

Cells in some filamentous cynobacteria that are speciallized for nitrogen fixation are called:

1. Phycobilisomes

2. Chromatophores

3. Grana

4. Heterocysts

The specialised cells to fix atmospheric nitrogen is called as

The cyanobacteria are also referred to as

(1) protists

(2) golden algae

(3) slime moulds

(4) blue-green algae

Identify the labelled part in the given figure and select the correct option.

Heterocyst in blue-green algae

1. Lacks photosystem- I

2. Are specialised cells for photosynthesis

3. May perform reproduction

4. Performs nitrogen fixation in anaerobic condition

Cyanobacteria do not possess which feature?

Find the incorrect match.