Question

The relationship between sucker fish and shark is __________.

• A. Predation
• B. Competition
• C. Parasitism
• D. Commensalism

Hint:

Remember: Remora + Shark → One benefits, other unaffected = Commensalism.

Answer 1

The Correct Option is D

Concept: Commensalism is a type of interaction where one organism benefits while the other is neither harmed nor benefited.
Step 1: Understanding the relationship.
The sucker fish (remora) attaches itself to the shark using a sucker-like organ.
Step 2: Benefit to sucker fish.

• Gets free transport
• Feeds on food scraps left by the shark

Step 3: Effect on shark.
The shark is neither harmed nor significantly benefited.
Step 4: Evaluating the options.

• Predation $\rightarrow$ One kills another (incorrect)
• Competition $\rightarrow$ Both compete (incorrect)
• Parasitism $\rightarrow$ One harmed (incorrect)
• Commensalism $\rightarrow$ One benefits, other unaffected (correct)

Step 5: Conclusion.
Thus, the relationship is commensalism.