General Ecology Chapter 11

Question 1

Two species of birds feed on similar types of insects, and nest in the same tree species. This is an example of:

Answer 1

Exploitation competition

Question 2

The experiments conducted by Thomas Park using flour beetles provided evidence that the results of competition are influenced by:

Answer 2

Moisture, temperature, parasitism, and stochasiticity

Question 3

In Lotka-Volterra competition models, if K2/B<K1 and K1/a>K2 then:

Answer 3

N2 is eliminated

Question 4

Divergence in morphology that is a result of competition is termed:

Answer 4

Character displacement

Question 5

Two species of barnacle, Semibalanus balanoides and Chthamalus stellatus, occur in the intertidal regions of Scotland. Which of the following statements is correct?

Answer 5

Semibalanus outcompete Chthamalus over most of the rock face

Question 6

Two species of insect are found on a species of plant with six leaf pairs. Species A occurs with equal abundance on each of the bottom five pairs and Species B occurs with equal abundance on each of the top five pairs. What is the proportional similarity?

Answer 6

0.8

Question 7

In d/w analysis, what is not true?

Answer 7

d/w < 1 = no competition

Question 8

What makes invasive plant species good competition?

Answer 8

Loss of natural enemies, native species are very susceptible to allelochemicals, and invasives are more efficient utilizers of resources

Question 9

A group of species that feed on the same resources, in the same way, is known as a:

Answer 9

Guild

Question 10

In a group of related bird species , larger species eat larger food items while smaller species eat smaller items. This is an example of:

Answer 10

resource partitioning