Chapter 3 Review

Lampreys (the dark organisms attached to the trout) feed by attaching to a host organism and sucking out its blood. What kind of relationship do this trout and the lampreys have?

• Symbiotic

• Parasitic

• Mutualistic

• Commensal

Bromeliads are plants (the light-colored, spiky ones in the picture) that live on other plants. Bromeliads receive a good position to gain sunlight and water, and the plant they cling to is usually not affected. What kind of relationship do the two plants have?

• Predator/Prey

• Commensal

• Mutualistic

• Parasitic

An ecological pyramid which used to exist in Ohio is shown in the picture. Deer would eat all sorts of plants, and red wolves would eat the deer. Red wolves have been eliminated from Ohio. Pick the option which was the most likely impact of red wolves dying out.

• Deer populations grew much larger

• Deer populations shrank greatly

• Red wolf populations reappeared

• Plant biomass in Ohio steadily increased over time

An ecological pyramid which used to exist in Ohio is shown in the picture. Deer would eat all sorts of plants, and red wolves would eat the deer. Red wolves have been eliminated from Ohio. What would likely happen if red wolves were reintroduced in Ohio?

• Deer populations would get bigger

• Deer populations would shrink

• Red wolves would not be able to last, and would vanish again

• Plant biomass would rapidly shrink

The term for a close ecological relationship between two organisms. Organisms might benefit, be harmed, or not effected at all.

Which of these terms is an organism's role in an ecosystem?

• Ecosystem

• Habitat

• Niche

• Biosphere

Which of these terms refers to an organism's home, food, and water source?

• Ecosystem

• Habitat

• Niche

• Biosphere

A set of biotic and abiotic factors which form complex relationships in a certain area is...

• ...an ecosystem

• ...a habitat

• ...a niche

• ...the biosphere

Which of these is NOT one of the three components of biodiversity?

• Ecosystem diversity

• Species diversity

• Genetic diversity

• Consumer diversity

Which ecosystem should be considered most biodiverse?

• A newly formed ocean island with some palm trees and two species of seabirds.

• An old forest which a variety of producers and dozens of species of consumers

• An ocean trench with very little food for consumers