Ecology Test Part 2 Question Preview (ID: 37557)
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___________would INCREASE the carrying capacity for white-tailed deer in an Eastern temperate forest ecosystem.
a) The re-introduction of the Eastern cougar into North Carolina.
b) A large migration of the closely related mule deer, into the East.
c) The construction of new roads and increased traffic through woodland areas.
d) The re-introduction of the American chestnut tree, which produces many seeds, and used to live in North Carolina.
Peppered moths come in two colors, black and white. What did Kettlewell show, with regard to peppered moth populations and tree coloring? (Recall that England at the time was heated mainly by coal in urban areas.)
a) In smoggy areas, dark moths have a higher survival rate than white moths.
b) White moths stand out in rural areas, and quickly disappear from those areas.
c) The black moth and white moth forms were actually two different species of moths.
d) Environmental conditions do not affect physical features of a species over a short time period.
The two abiotic factors used to classify earth’s terrestrial biomes are ____.
a) plant and animal species present.
b) trophic levels and average temperature.
c) average yearly precipitation and temperature.
d) length of growing season and amount of rainfall.
The greatest biodiversity on earth is found in the ____biome.
a) deciduous forest
b) grasslands
c) taiga
d) tropical rainforest
The carrying capacity of any population will stay the same _________.
a) as long as predators do not increase.
b) unless environmental conditions change.
c) regardless of emigration and immigration.
d) even though the birth rate exceeds the death rate.
An animal with thick layers of blubber, dense fur, the tendency to hibernate, and light coloration is well-adapted to the ___ biome.
a) chapparal
b) grassland
c) temperate forest
d) tundra
The aloe plant has thick, water-filled leaves covered with spikes. The flowers are high on a stalk, so that pollen can be quickly and easily released. What biome is the aloe BEST adapted for?
a) desert
b) savanna
c) tropical rainforest
d) tundra
Use the picture shown in your study guide question 22 is a food chain. Suppose a company that makes snakeskin wallets sets up shop in the area and kills all of the Mojave rattlesnakes. What would you LEAST expect to happen
a) Kangaroo rat populations show an increase.
b) Desert sagebrush plant populations grow uncontrollably.
c) Prickly pear cacti are grazed more heavily than previously.
d) Cougars eat more jackrabbits in their diet than they normally do
Review the desert food web for 22. What organism, absent in the web, would be MOST responsible for recycling organic matter back through the food web?
a) bacteria
b) cactus plants
c) cougars
d) sage brush
The biome found in Kenya and South Africa is described. The land is grass-covered with very few trees and gazelles and other grazers are common here. Why does this biome have a low population of trees?
a) Large grazing animals destroy the trees.
b) It is a deforested rainforest with poor soil.
c) It has high temperatures and low precipitation.
d) It has a long rainy season followed by flooding.
Fungi are an important part of any ecosystem because they____.
a) add oxygen to the atmosphere.
b) use sunlight to make food for other organisms.
c) break down dead organisms and recycle nutrients.
d) are important producers for consumers in the food web.
The single MOST important factor contributing to the modern-day extinction of hundreds of species on Earth is___.
a) acid rain
b) greenhouse effect.
c) habitat destruction.
d) invasive species.
The process of photosynthesis is essential in the oxygen/carbon dioxide cycle. Photosynthesis removes ______from the atmosphere and produces and releases ______ into the atmosphere.
a) glucose, oxygen
b) oxygen, glucose
c) carbon dioxide, oxygen
d) oxygen, carbon dioxide
The process of respiration is essential in the oxygen/carbon dioxide cycle. Respiration removes ______ from the atmosphere and produces and releases ______to the atmosphere.
a) Glucose: oxygen
b) oxygen : glucose
c) carbon dioxide : oxygen
d) oxygen : carbon dioxide
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