Question

Organisms such as animals and most microorganisms must obtain carbon in reduced forms from their such organisms are referred to as:

a) Autotrophs
b) Heterotrophs
c) Decomposers
d) Producers
e) Mixotrophs

Answer 1

Organisms that need to obtain carbon in reduced forms from other organisms, such as animals and most microorganisms, are known as heterotrophs. Heterotrophs consume autotroph-produced organic compounds to obtain energy and play a vital role in the carbon cycle.

Step-by-step explanation:

Organisms such as animals and most microorganisms that must obtain carbon in reduced forms from other organisms are referred to as heterotrophs. Unlike autotrophs, which are capable of converting inorganic carbon dioxide (CO₂) into organic carbon compounds through processes like photosynthesis or chemosynthesis, heterotrophs rely on complex organic carbon compounds as nutrients. These compounds are typically provided by autotrophs. Heterotrophs play a critical role in the carbon cycle by consuming autotrophs and breaking down the high-energy carbon compounds to obtain cellular energy, such as ATP. This process includes aerobic respiration, which is oxygen-dependent, thus creating a constant exchange of oxygen and carbon dioxide between autotrophs and heterotrophs, connecting all living organisms on Earth through the carbon cycle.