Theory:

     There are many kinds of ants. The commonest among them are the black or red ones. We have seen them since we were children, but haven’t paid enough attention to them. Where do they live? In their comfortable homes called ‘nests’ or ‘anthills’. Each has hundreds of little rooms and passages. In some of these rooms the queen ant lays eggs. Others are nurseries for the young ones (called ‘grubs’). Workers have their reserved quarters. They spend most of their time searching for food. Some rooms serve as storehouses for this food. Soldiers have separate barracks. No worker has ever tried to live in a soldier’s house; no soldier has ever gone out searching for food. No worker or soldier or cleaner has ever harmed a grub. So you see, an ant’s life is very peaceful. Each does its share of work intelligently and bravely, and never fights with other members of the group.
Explanation:
  
There are many kinds of ant. We have seen red and black ants since our childhood - these are the most common ones. But we haven't given much attention to ants.
 
Where do ants live? Nests or anthills. Anthills are comfortable homes where there are hundreds of little rooms or chambers for each class of ants and different activities.
  • Some rooms for Queen ants - Queen ants lay eggs in these rooms.
  • Some rooms are nurseries  - for the young ants, called grubs.
  • Some rooms are reserved quarters - for worker ants, who spend time searching for food.  
  • Some rooms are storehouses - for food brought in by worker ants.
  • Some rooms are barracks - for soldier ants.
anthill-2699016_960_720.jpg
 
Worker ants will live only in their quarters; soldier ants will not go in search of food. Soldier or cleaner ants never harm any small ants (grubs). All their places and duties are clearly classified, and therefore an ant's life is very peaceful. Each ant does the work allotted to it cleverly and bravely. It doesn't fight with other members of the group.
 
Meanings of difficult words:
 
Words
Meanings
anthills
a nest in the form of a mound built by ants
grubsthe larva of an insect, like ants
barracksa building for soldiers to stay
Reference:
National Council of Educational Research and Training (2007). An Alien Hand. The Tiny Teacher(pp. 1-6). Published at the Publication Division by the Secretary, National Council of Educational Research and Training, Sri Aurobindo Marg, New Delhi.