Topic Content:
- Definition of Ecosystem
- Feeding Relationships or Interactions
- Parasitism, Mutualism, Saprophytism, Commensalism, Predation
What is an Ecosystem?
Ecosystem is a community of living organisms, in conjunction with non-living thing components, interacting as a system.
Various kinds of feeding relationships exist between organisms in a community. These feeding relationships or interactions may be harmful, beneficial, or neutral to each of the organisms in a community.
They are:
1. Parasitism.
2. Mutualism.
3. Saprophytism.
4. Commensalism.
5. Predation.
1. Parasitism:
This is an association or relationship in which one organism, called the parasite, lives in, or on, another organism called the host, from where nourishment is derived. In this case, the parasite is gaining and the host is losing. Examples include man and tapeworm, man and roundworm, tapeworm and pig, ticks and cattle, fleas and birds, lice and man, etc.
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