Heterotrophic Nutrition Quiz

What is the primary source of energy for heterotrophic organisms?

• Inorganic minerals

• Water

• Organic compounds

• Sunlight

Which of the following is NOT a type of heterotrophic nutrition?

• Predatory nutrition

• Saprophytic nutrition

• Parasitic nutrition

• Autotrophic nutrition

In which of the following environments would you most likely find saprotrophs?

• Decaying organic matter

• Mountain peaks

• Desert sand

• Open ocean

Which of the following organisms is an example of a parasitic heterotroph?

• Algae

• Tapeworm

• Mushroom

• Grass

What type of heterotrophic nutrition involves the ingestion of living organisms?

• Absorption

• Predation

• Photosynthesis

• Decomposition

Which of the following best describes the role of decomposers in an ecosystem?

• Producing energy through photosynthesis

• Creating new organic compounds from inorganic materials

• Breaking down dead organic material

• Competing with plants for sunlight

Which of the following is a characteristic of heterotrophic nutrition?

• Synthesis of organic compounds from CO2

• Ability to produce own food from sunlight

• Dependence on other organisms for food

• Absorption of nutrients through roots

What is the main difference between saprophytic and parasitic nutrition?

• Saprophytic nutrition feeds on dead matter, while parasitic feeds on living hosts.

• Parasitic nutrition is more efficient than saprophytic nutrition.

• Both feed on living hosts.

• Saprophytic nutrition requires sunlight, while parasitic does not.

Which of the following processes do heterotrophs primarily rely on to obtain energy?

• Photosynthesis

• Cellular respiration

• Nitrogen fixation

• Fermentation

What is a common method by which fungi obtain nutrients?

• Photosynthesis through chlorophyll

• Excretion of digestive enzymes into the soil

• Ingestion through a mouth

• Absorption through hyphae