Definitions [5]
Define the following term and give two examples:
Symbiosis
It refers to relationships between organisms of different species that show on intimate association with each other. Symbiotic relationships provide atleast one of the participating species with a nutritional advantage.
Examples of Symbiosis Relationships are of Fungus and photosynthestic alga and Microbes and cattle.
Define the term predation.
A predator is any consumer that kills and eats another living organism in order to obtain energy. The organism being eaten is called the prey.
Define the food chain and give two examples.
Food chain, in ecology, the sequence of transfers of matter and energy in the form of food from organism to organism. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant. Plants, which convert solar energy to food by photosynthesis, are the primary food source. In a predator chain, a plant-eating animal is eaten by a flesh-eating animal. In a parasite chain, a smaller organism consumes part of a larger host and may itself be parasitized by even smaller organisms. In a saprophytic chain, microorganisms live on dead organic matter.
Pollution is the addition of any such constituent to air, water or land which deteriorates the natural quality of the environment.
Pollutant is any such constituent which causes pollution.
