1. Which of the statements below accurately reflects theassumptions of the competitive exclusion principle?

A.The competitive exclusion principle assumes that thecompetitors have the exact same resource requirements and thatenvironmental conditions may be variable.

B. The competitive exclusion principle assumes that competitorshave different resource requirements and that environmentalconditions remain constant.

C. The competitive exclusion principle assumes that thecompetitors have the exact same resource requirements and thatenvironmental conditions remain constant.

D. The competitive exclusion principle assumes that thecompetitors have resource partitioning and that environmentalconditions remain constant.

E. The competitive exclusion principle makes no assumptionsabout the competitors.

2. Which of the following statements istrue?

A. Germination rates vary among species, but these differencesdo not translate into differences in competitive ability.

B. Temperature, humidity, and salinity have little effect oncompetition.

C. Plants with high growth rates under high light conditionstend to be overgrown quickly in newly opened habitat patches.

D. The outcome of competition can be influenced by factors otherthan limited resources.

D. Multiple species tend to perform their best under the exactsame conditions.

3. What is a zero-growth isocline?

A. the set of values of two population sizes where the growthrate is 0

B. the set of values where α = β

C. when the population size of species 1 exceeds species 2

D. the set of values where the carrying capacity is reached forone of the two species