Question

Microbes in a detritus food chain, which degrades the dead organic matter to meet their energy and nutrient requirement are best referred to as

• A. Autotrophs
• B. Herbivores
• C. Saprophytes
• D. Heterotrophs

Hint:

In biology questions, always look for the most specific and accurate term. While a decomposer is a type of heterotroph, if 'decomposer' or 'saprophyte' is an option, it is usually the better answer than the broader category 'heterotroph'.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
The question asks for the specific term for microbes (like bacteria and fungi) that obtain nutrients by decomposing dead organic matter in a detritus food chain.
Step 2: Detailed Explanation:
Let's define the terms:
- Autotrophs: Organisms that produce their own food, usually through photosynthesis (e.g., plants).
- Herbivores: Animals that feed on plants (primary consumers).
- Saphrophytes: Organisms that feed on dead and decaying organic matter. They are also known as decomposers. This accurately describes the role of the microbes in the question.
- Heterotrophs: A broad category for organisms that cannot make their own food and must consume other organic matter. This category includes herbivores, carnivores, and saprophytes.
While the microbes are indeed heterotrophs, the term Saphrophytes is more specific and accurately describes their exact mode of nutrition and ecological role as decomposers in a detritus food chain.
Step 3: Final Answer:
The microbes are best referred to as Saprophytes.