Heterotroph

Definition

A heterotroph is an organism that cannot synthesize its own food and relies on complex organic substances for nutrition. Heterotrophs obtain their energy by consuming other organisms or organic matter.

5 Must Know Facts For Your Next Test

1. Heterotrophs include animals, fungi, and many bacteria.
2. They play a crucial role in the carbon cycle by breaking down organic matter.
3. Heterotrophs can be further classified as chemoheterotrophs and photoheterotrophs based on their energy sources.
4. Chemoheterotrophs obtain energy through the oxidation of organic compounds.
5. Photoheterotrophs use light for energy but still require organic compounds for carbon.

Review Questions

Related terms

Autotroph: An organism capable of synthesizing its own food from inorganic substances using light or chemical energy.

Chemoautotroph: An organism that derives energy from the oxidation of inorganic compounds.

Saprophyte: A type of heterotrophic organism that feeds on dead or decaying organic matter.