Question

The order of organism is an aquatic food chain is

• A. Bacteria $\to$ Seal $\to$ Diatom $\to$ Fish $\to$ Crustacea
• B. Crustacea $\to$ Seal $\to$ Fish $\to$ Polar bear $\to$ Diatom
• C. Polar bear $\to$ Diatom $\to$ Seal $\to$ Crustacea
• D. Diatom $\to$ Crustacea $\to$ Fish $\to$ Seal $\to$ Bacteria

Answer 1

Answer: (D)

Diatom $\to$ Crustacea $\to$ Fish $\to$ Seal $\to$ Bacteria

The food-chain includes the producer, primary consumer, secondary consumer and decomposers. Diatoms are a major group of algae, and are among the most common types of phytoplankton so are the producers, crustacean belongs to primary consumer, fish is secondary consumer, seal is tertiary and bacteria are decomposers.

So. the correct answer is option D.