Dictionary > Primary consumer

Primary consumer

Definition
noun, plural: primary consumers
Any organism that consumes or feeds on autotrophs
Supplement
A food chain is defined as a feeding hierarchy in which organisms in an ecosystem are grouped into trophic (nutritional) levels and are shown in a succession to represent the flow of food energy and the feeding relationships between them. It is comprised of various trophic levels. A trophic level refers to a level or a position in a food chain or ecological pyramid. It is occupied by a group of organisms that have a similar feeding mode. In a food chain, there are three fundamental ways through which organisms obtain nourishment. These are by obtaining food from inorganic sources, by feeding organic matter, and by breaking down dead organic material or wastes. Those that are capable of directly obtaining food from inorganic sources are called producers (or autotrophs). Those that feed on organic matter are called consumers (or heterotrophs). Those that break down dead organic material are referred to as decomposers (or detritivores).
Consumers are organisms that generally obtain food by feeding on another organism or organic matter. They lack the ability to manufacture their own food from inorganic sources as what producers are capable of doing. In a food chain, consumers may be further grouped into primary consumers, secondary consumers, and tertiary consumers. Primary consumers are generally herbivores. They feed on producers. For instance, herbivores feeding on green plants are considered as primary consumers.
Synonym(s):

  • first-level consumer

Compare:

See also:


You will also like...

Biological Cell schematic diagram
Biological Cell Introduction

It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..

Biological Viruses
Biological Viruses

Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...

vitamins
A Balanced Vitamin Diet – Vitamins A – K

A balanced diet is essential to a healthy organism. Insufficiency or too much of a particular element or compound, such ..

Neurology of Illusions
Neurology of Illusions

Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..

Wart-like leaf galls on grape leaves
Plant Cell Defense

Plants protect themselves by releasing hydrogen peroxide to fight against fungal invasion. Another way is by secreting c..

running freshwater community
Running Water Freshwater Community Factors

This tutorial noted some of the physical and chemical factors that provide the framework of a running water community in..

Related Articles...

No related articles found

See all Related Topics