Blue-green algae show the closest resemblance to which of the following?

Which of the following movements may be found in blue-green algae?

Assertion: Bacteria have three basic shapes,i.e.,round,rod,spiral.
Reason: Cocci and Bacilli may form clusters or chains of a definite length.

Organisms that obtain energy by the oxidation of reduced inorganic compounds are called .....

Bacteria that take up the Gram stain are called . . . . . . and those that do not take up the Gram stain are called . . . . . . .

The blue-green algae are so called as they have,in addition to the green pigment chlorophyll,a blue pigment known as: