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In an ocean, the parrotfish feed on marine plants, big fish feed on parrotfish, and sharks feed on the big fish. What are sharks in the food chain?

A. Producers
B. Primary consumers
C. Secondary consumers
D. Tertiary consumers
E. Decomposers

Answer :

Final answer:

Sharks are classified as tertiary consumers in the marine food chain because they feed on big fish, which are secondary consumers that eat parrotfish (primary consumers). The hierarchy of this food chain consists of producers, primary consumers, secondary consumers, and tertiary consumers. This structure reflects the feeding relationships within the ocean ecosystem.


Explanation:

Understanding Food Chains

In an ocean ecosystem, we can observe a hierarchy of organisms based on their feeding relationships, commonly referred to as a food chain. In the scenario presented, the parrotfish feed on marine plants, which makes them herbivores. Next, big fish feed on the parrotfish, positioning them as secondary consumers, while sharks, which primarily feed on these big fish, are categorized as tertiary consumers.

Definitions:

  1. Producers: Organisms that produce their own energy through photosynthesis, like marine plants.
  2. Primary Consumers: Herbivores that consume producers, such as parrotfish.
  3. Secondary Consumers: Carnivores that eat primary consumers, like big fish.
  4. Tertiary Consumers: Carnivores that eat secondary consumers, such as sharks.
  5. Decomposers: Organisms, like bacteria and fungi, that break down dead organic matter.

Since the sharks feed on big fish, they occupy the role of tertiary consumers in this food chain.


Learn more about food chain here:

https://brainly.com/question/40840983


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