In this article we will discuss about the food chains, food webs and trophic levels of various organisms in the environment. Food Chains, Food Webs and Trophic Levels: 1. Food Chain: The transfer of food energy from the soured in plants through a series of organisms with repeated eating and being eaten, is called food chain (Fig. 48.2). a. At [...]
The following points highlight the five major effects of allelochemicals on various organisms. The effects are: 1. Repellents 2. Escape from Predators 3. Suppressant 4. Attracants 5. Avoidance. Effect of Allelochemical # 1. Repellents: Repellents are distasteful and poisonous compounds present in buttercup leaves or mustards or the noxious butyl mercaptan (butanethiol) sprayed by the skunk. The bombardier beetle sprays [...]
In this article we will discuss about the intraspecific and interspecific interaction between organisms. Intraspecific Associations: In intraspecific association individuals are quite similar in their resource requirements. This may often lead to intense competition. Intraspecific competition is a major force in ecology. To overcome or cope with competition, intraspecific competition may lead to behavioural adaptations such as dispersal and territoriality. [...]