EducatorSharmin

Environment of Life 1. What is symbiosis? Explain it. Ans: In the living world existing organic relationship between plants and animals can be designated with the term symbiosis 2. What is plankton? Ans: The producers are the photosynthetic algae and plants of shallow water. The free-floating microscopic organisms are called plankton. (There are two main types of plankton: phytoplankton, which are plants, and zooplankton, which are animals. Zooplankton and other small marine creatures eat phytoplankton and then become food for fish, crustaceans, and other larger species.) 3. What is a parasitic food chain? Ans: Parasitic plants and animals in most of the cases derive their food from a host much larger in size than they are. In some cases other smaller parasites are dependent on all the parasites for their food. In this type of food chain, the primary producers may not be always at the beginning level. The chain remains incomplete.                 ...