Butterfly visits the flowers for collecting honey which is its food. In the process, it picks up pollen from anthers of one flower and deposits them over the stigma of another flower. The phenomenon is called cross-pollination (entomophily). (i) It shows that both the plants and the butterflies are benefitted by their mutual cooperation butterfly getting food and the plants getting pollinated, (ii) Shreya gives instances of this cooperative behaviour in day to day working in the family. She helps her mother in many jobs while the mother takes care of her tiffin, clothes and other requirements, (iii) Our society is based on cooperative working of its members, some are looking after electricity, water supply, communications, transport, education, health, removal of trash, supply of food stuffs, etc for payment made by everybody.