Pretest Answers

Some flowering plants are pollinated by honeybees. At some time in the past, honeybees evolved the ability to see ultraviolet radiation. Some flowers have evolved to produce ultraviolet markers on their petals that direct honeybees to the reproductive parts of the flower. What is this an example of?

Which term refers to a change in one species that results from a change in another species that it interacts with?

A symbiotic relationship in which one species benefits and the other is harmed is known as

What is the name that is given to a symbiotic relationship in which both species benefit?

The pine borer beetle is a parasite to the pine tree. What would most likely happen to the pine tree population if the beetle population decreased?

When an insect touches the bristles on the lobes of a Venus flytrap, the lobes close quickly, engulfing the insect. The movement of the insect inside the lobes causes the flytrap to secrete digestive enzymes that kill the insect. Which type of relationship does this describe?

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?

Bears and salmon have a predator-prey relationship. What would most likely happen to the bear population if the salmon population increased?

A relationship in which one species kills and consumes another species is known as

Termites are unable to digest some plant materials (fiber). Termite stomachs contain bacteria that digest the fiber in wood for the termites. In turn, the bacteria are provided with a hospitable environment to carry out their life processes.