Question

1. Which type of community is likely dependent on repeated disturbance for its continued existence?

a. Grasslands in central Texas

b. Old-growth fir forests in Oregon

c. Lodgepole Pine forests in Wyoming

d. All of the above

e. Only A. and C.

2. Most taxa are more diverse near the tropics, and there are many hypotheses to explain this pattern. Reverse latitudinal gradients in species diversity in ocean-dwelling organisms like sea birds and phytoplankton have been used to support which hypothesis for tropical diversity?

a. High diversity is driven by high productivity

b. High diversity is driven by climatic stability

c. High diversity is driven by longer evolutionary history

d. High diversity is driven by greater land area

e. High diversity is driven by intermediate levels of disturbance

3. According to Island Biogeography Theory, islands with the highest diversity are ________ because they have _________ immigration rates and _______ extinction rates.

a. Far and small; low; high

b. Far and small; high; low

c. Near and large; low; high

d. Near and large; high; low

e. Near and large; low; low

Answer 1

Ans 1. D) all of the above.

Temperate biomes are more prone to disturbance for their existence. And all of these lie in temperate region.

Ans 2)  High diversity is driven by climatic stability

It is because at tropics the temperature is stable, and allow for maximum growth of micro-organisms and trees. Also there is least disturbance which also led to more diversity in the area.

Ans 3) near and large, high and low.

These conditions will led to more biological diversity on the islands. If they are near..large in size, more immigration, less extinction they will be more diverse.