Practice Questions

TLS Online TPP Program

#Question id: 12585

Agricultural lands frequently require nutritional supplementation because

#Unit 10. Ecological Principles

Nitrogen-fixing bacteria and detrivores do not cycle nutrients as effectively as they do on wild lands.
The nutrients that enter the plants are not returned to the soil on lands where they are harvested.
The prairies that comprise good agricultural land tend to be nutrient-poor.
Grains raised for feed must be fortified, and thus require additional nutrients.

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TLS Online TPP Program

#Question id: 12004

#Unit 10. Ecological Principles

The figure above shows the distribution of 10 plant species that grow along a regular environmental gradient, such as depth of the water table in a river valley. All other environmental factors are similar. This figure demonstrates that

TLS Online TPP Program

#Question id: 12005

#Unit 10. Ecological Principles

Acid rain damage depends on the buffering capacity of the soils in a given region. Damage has been greatest where the soil layer is

TLS Online TPP Program

#Question id: 12006

#Unit 10. Ecological Principles

Nitrogen is a major environmental pollutant of groundwater in many parts of the world. What is the major cause of this nitrogen accumulation in groundwater?

TLS Online TPP Program

#Question id: 12007

#Unit 10. Ecological Principles

Sewall Wright's metaphor of evolution on an adaptive landscape describes a population as occupying a field of genotypes graded by contours delimiting gene combinations of equal fitness. The evolutionary mechanism most likely to move a population consistently "uphill" toward adaptive peaks on this landscape is