define:
autotrophic
heterotrophic nutrition
parasitism
saprophytism
symbiosis
Answers
An organism capable of synthesizing its own food from inorganic substances using light or chemical energy. Green plants, algae, and certain bacteria are autotrophs.
Heterotrophic nutrition is the mode of nutrition in which organisms depend upon other organisms to survive. All animals and non green plants are heterotrophic. Heterotrophic organisms have to acquire and take in all the organic substances they need to survive.
In evolutionary biology, parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.
saprophytism. the ability of certain plants to live in dead or decaying organic matter. — saprophyte, n. — saprophytic, n., adj. See also: Plants.
Symbiosis is a relationship between two or more organisms that live closely together. There are several types or classes of symbiosis: Commensalism. One organism benefits and the other is neither harmed nor helped. Mutualism.