FREE ECOLOGY AND STUDY GAMES ABOUT APES TEST 2

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FREE ECOLOGY AND STUDY GAMES ABOUT APES TEST 2

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -27 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Interspecific Competition

Answer:

Three species of grasses compete for sunlight in a grassy lawn

Question 2: What type of niche do omnivores have?

Answer:

A broad niche

Question 3: Foundation Species

Answer:

Kelp forms beds creating a habitat for many fish and shellfish- sustain habitat

Question 4: Keystone Species

Answer:

The beaver transforms its environment allowing a diverse collection of organisms to thrive that would not normally be able to survive. - sustain other life forms

Question 5: Indicator Species

Answer:

As pollution levels in streams rise, many aquatic insects such as the mayfly quickly disappear. For this reason, many aquatic insects are studied intensively.

Question 6: Parasitism

Answer:

Ticks attach themselves to humans

Question 7: What is primary succession?

Answer:

The gradual change in species composition in an area lacking the presence of soil or organisms Question 8: How are the terms environmental resistance and carrying capacity related?

Answer:

Environmental resistance is the combination of all factors that limit population growth and the carrying capacity is the maximum population an ecosystem can sustain indefinitely. Carrying capacity is a product of environmental resistance.Question 9: How can primary succession lead to soil formation and a newly formed landscape

Answer:

Pioneer species such as moss and lichens will form and begin to break down soil from bedrock. After several life cycles of primitive plants, the soil quality improves until the ecosystem can sustain a variety of species and return to its climax community

Question 10: Predation

Answer:

Sea urchins prey on kelp

Question 11: Activities that result in the loss of biodiversity

Answer:

Deforestation, poaching, overfishing, volcanoes, forest fires

Question 12: Summarize evolution

Answer:

The change in the genetic makeup of successive generations of a species

Question 13: Endemic Species

Answer:

Species unique to a defined geographic location

Question 14: How is predation different from parasitism?

Answer:

In predation the prey is consumed and dies whereas in parasitism the parasite may negatively affect the host but not kill it.

Question 15: Characteristics shared by ecosystems that have high biodiversity

Answer:

Variety of species, abundant resources

Question 16: Commensalism

Answer:

Barnacles adhering to the skin of a whale that gives them food but does not affect the whales

Question 17: Generalist species

Answer:

Broad niche

Question 18: What is an area that is likely to contain endemic species?

Answer:

Hawaiian Islands

Question 19: What are the mechanisms of speciation?

Answer:

Reproductive and geographic isolation

Question 20: Example of secondary succession

Answer:

An agricultural field that has recently been cut for hay

Question 21: What makes beavers keystone species

Answer:

Dams make beavers keystone species because if they were removed there would be mass floods and changes in the rest of the wildlife of a river ecosystem

Question 22: Benefits from biodiversity

Answer:

Greater stability from complex food web, nutrients recycles through decomposition, higher productivity from range of producers producing more biomass

Question 23: Mutualism

Answer:

A species of ant living in the thorns of the Acadia tree protect the tree from herbivores and feed off lipid-rich food-bodies on the tree

Question 24: Keystone species have an important role on their environment by

Answer:

Playing a critical role in sustaining their ecosystem

Question 25: Density dependent population control

Answer:

Factors that limit population growth that have a greater effect as density increases. Ex: Red tailed hawks feeding on rabbits, parasitism, competition, disease

Question 26: Specialist Species

Answer:

Agave is used to define the Chihuahua desert of Northern Mexico and the Southwestern United States

Question 27: Biome

Answer:

Regions consisting of a mosaic of patches of different communities