Author Question: What is the name for the pelagic community that lives in the upper limits of the permanent darkness ... (Read 45 times)

tfester · **on:** Aug 22, 2018

What is the name for the pelagic community that lives in the upper limits of the permanent darkness in
the deep ocean?
a. Climax community
b. Rift community
c. Deep scattering layer
d. Benthic community

Question 2

What is a niche?
a. An organism's physical location in a community
b. The amount of different species in a community
c. An organism's occupation in a community
d. The number of populations in a community

snackralk · **Reply #1 on:** Aug 22, 2018

Answer to Question 1

ANS: C
This community is named the deep scattering layer due to its tendency to reflect sound pulses which
make it appear like a false bottom to people above. The scattering layer itself is comprised of a dense
population of fish, squid, and other vertical migrators. Information can be found in the section
Examples of Marine Communities

Answer to Question 2

ANS: C
A niche includes the relationship to food and predators. It is what the organism is doing or its role in
the community. Information can be found in the section Communities Consist of Interacting
Producers, Consumers, and Decomposers