Question

QUESTION 1

1. Competition for food would probably be most severe between two

   	A.	closely related species in different niches
   	B.	closely related species in similar niches
   	C.	unrelated species in the same community occupying different niches
   	D.	unrelated species in different communities
   	E.	ecological equivalents in different niches

0.5 points   

QUESTION 2

1. Keystone species can occur at any tropic level within a community.

   True

   False

0.5 points   

QUESTION 3

1. Keystone species are always the dominant species in an ecological community.

   True

   False

0.5 points   

QUESTION 4

1. Which of the following is true about secondary consumers in an ecosystem?

   	A.	they eat only plants
   	B.	they are fewer in number than are primary consumers
   	C.	they contain the greatest total biomass in the system
   	D.	they are smaller and weaker than are primary consumers
   	E.	they are eaten by primary consumers

0.5 points   

QUESTION 5

1. The decline or removal of a(n) _____________ species will drastically alter the structure of an ecological community.

   	A.	keystone
   	B.	omnivorous
   	C.	dominant
   	D.	competitively dominant
   	E.	predatory

Answer 1

1) Competition for food would probably be most severe between two

	A.	closely related species in different niches
	B.	closely related species in similar niches
	C.	unrelated species in the same community occupying different niches
	D.	unrelated species in different communities
	E.	ecological equivalents in different niches

answer:

B.	closely related species in similar niches

2) Keystone species can occur at any tropic level within a community.

True

False

answer: false

3) Keystone species are always the dominant species in an ecological community.

True

False

answer: true

4) Which of the following is true about secondary consumers in an ecosystem?

	A.	they eat only plants
	B.	they are fewer in number than are primary consumers
	C.	they contain the greatest total biomass in the system
	D.	they are smaller and weaker than are primary consumers
	E.	they are eaten by primary consumers

answer: B. there are fewer in number than are primary consumers

QUESTION 5

1. The decline or removal of a(n) _____________ species will drastically alter the structure of an ecological community.

   	A.	keystone
   	B.	omnivorous
   	C.	dominant
   	D.	competitively dominant
   	E.	predatory

answer: A. Kestone