DENDROLOGY

Detailed explanation-1: -Heterotrophs are known as consumers because they consume producers or other consumers. Dogs, birds, fish, and humans are all examples of heterotrophs. Heterotrophs occupy the second and third levels in a food chain, a sequence of organisms that provide energy and nutrients for other organisms.

Detailed explanation-2: -Euglena is autotrophic and heterotrophic both.

Detailed explanation-3: -Heterotroph. n. /ˈhɛtəɹoʊˈtɹoʊf/ Definition: an organism that is unable to synthesize its own organic carbon-based compounds from inorganic sources, hence, feeds on organic matter produced by, or available in, other organisms.

Detailed explanation-4: -Heterotrophic bacteria derive energy from organic compounds. They help in nutrient recycling. They decompose dead and decaying plants and animal remnants and help in biodegradation. Heterotrophic bacteria are used for making curd, antibiotics, nitrogen-fixation, etc.