Questions

Here from the above options, Algae is an Autotroph.

Autotrophs : 

An Autotroph is also called as Producer, is an organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions.

 Liberty , Equality and Fraterenity

The Infantry Regiment is also known as the Mechanised Infantry Regiment of the Indian Army. Though its aggregate size, it is closer to that or a full mechanised division with 26 mechanised battalions.

Indian Army Corps of Electronics and Mechanical Engineers are an arms and service branch of Indian Army having varied responsibilities of design, development, trial, inspection and refit of weapon systems and equipment. They also provide technical advice to units on systems and recovery operations in peace and war.