Chapter 45

Biology: The Unity and Diversity of Life · 12 exercises

Problem 1

The type of physical environment in which a species typically lives is its ______________. a. niche b. habitat c. community d. population

4 step solution

Problem 2

Which cannot be a symbiosis? a. mutualism b. parasitism c. commensalism d. interspecific competition

3 step solution

Problem 3

A tick is \(a(n)\) ____________. a. parasitoid b. ectoparasite c. endoparasite

3 step solution

Problem 4

________________ can lead to resource partitioning. a. Mutualism b. Parasitism c. Commensalism d. Interspecific competition

5 step solution

Problem 5

Match the terms with the most suitable descriptions. ______________ mutualism ______________ parasitism ______________ commensalism ______________ predation ______________ interspecific ______________ competition a. one free-living species feeds on another and usually kills it b. two species interact and both benefit by the interaction c. two species interact and one benefits while the other is neither helped nor harmed d. one species feeds on another that it lives on or in e. two species access a resource

3 step solution

Problem 7

By a currently favored hypothesis, species richness of a community is greatest between physical disturbances of ________________ intensity or frequency. a. low b. intermediate c. high d. variable

4 step solution

Problem 9

Growth of a forest in an abandoned corn field is an example of ___________. a. primary succession b. resource partitioning c. secondary succession d. competitive exclusion

3 step solution

Problem 10

Species richness is greatest in communities ____________. a. near the equator b. in temperate regions c. near the poles d. that recently formed

4 step solution

Problem 11

If you remove a species from a community, the population size of its main __________ is likely to increase. a. parasite b. competitor c. predator

4 step solution

Problem 12

___________ steal parental care. a. Mutualists b. Commensalists c. Brood parasites d. Predators

4 step solution

Problem 13

The oldest established land communities are ____________. a. in the Arctic b. in temperate zones c. in the tropics d. on volcanic islands

3 step solution

Problem 14

Biological control of pest species ____________. a. has no side effects b. involves mutualists c. uses natural enemies d. requires use of chemicals

3 step solution

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