Question

The Remora remora, or suckerfish, often attaches to larger organisms such as sharks and whales through the use of a specialized sucker. This interaction enables the remora to feed on the scraps of food that remain from the larger organism’s meal. Typically, the larger organism is unaware of, and unaffected by, the remora. Which type of interaction occurs between the remora and its host organism?
mutualism
commensalism
parasitism

Answer 1

Commensalism.

The remora benefits (food and transport) while the host is typically neither helped nor harmed. Mutualism would require benefit to both; parasitism would harm the host.