4 - Special Relationships - Symbiosis

Which pairing is the BEST example of mutualism in a Caribbean reef?

Which statement BEST describes predation?

An orchid epiphyte grows on a mango tree for support but takes no food from it. This relationship is:

Which term correctly describes Aedes aegypti in dengue transmission?

Two male green iguanas contest a sunny rock for basking. This is:

A sudden rise in lionfish numbers is most likely to cause which change first?

When two lizard species feed on the same insects at different heights on a tree, this is:

A reef survey shows: Month 1–3 prey fish ↑, Month 4–5 predator fish ↑, Month 6 prey ↓. Which explanation fits BEST?

A new tick species appears on a cattle farm and spreads a bacterial disease. The tick is BEST described as a:

Which statement BEST distinguishes parasitism from predation?

Mangrove seedlings crowd a small gap; many die due to shading and limited water. Identify the interaction.

Barracuda numbers drop sharply due to fishing. Which chain of effects is MOST plausible?

Barnacles attach to a sea turtle’s shell and gain transport to plankton-rich waters; the turtle is unaffected. Classify this relationship.

Which option is NOT a typical predator adaptation?

In a school pond, tilapia and mollies eat the same zooplankton. After nutrient enrichment, vegetation grows and mollies shift to algae. What has MOST likely occurred?