An autotroph is an organism that is capable of producing its own food. They use inorganic sources and then convert them into useful substances that can further be utilized and assimilated by other organisms. Such organisms are not dependent on any other organisms. They are considered to be a very important entity of the atmosphere because all other lives are dependent upon them for food.
Plants are autotrophic entities which through the phenomenon of photosynthesis convert carbon dioxide and water into sugars and oxygen. The herbivores depend on these plants and the carnivores feed on these herbivores and hence, form food webs. They form the base of the energy pyramid and fix the energy that would be utilized by other organisms.
Predation by one flour beetle species on another can be used as
In chapter 14 we have seen how a herbivorous stream insect controls
How was the amount of food that Gause (1934) provided
How are manipulation of host behavior by spiny-headed worms and
Predation is one of the processes by which one organism exploits another
Ecologists are now challenged to study global ecology. The apparent role
In his experiments on competition between T. confusum and T.
Discuss how mathematical theory, laboratory models, and field experiments have
Explain the roles of food and predators in producing cycles of abundance
What evidence is there that variation in atmospheric CO 2 concentration is
