Question 1

What factors are necessary for plankton productivity and therefore determine where productivity is high and where it is low?

Accepted Answer

Phytoplankton need light and nutrients l...

Question 2

Toothed whales (Odontoceti) can search for prey using ____.

Accepted Answer

A)  echolocation
B)  sensitive organs that detect electric charge
C)  sensitive organs that detect water pressure
D)  bioluminescence

Question 3

Where, through a year, is the greatest total oceanic primary productivity?

Accepted Answer

A)  in the tropics
B)  in the temperate zones
C)  in the polar regions
D)  productivity is about equal at all latitudes

Question 4

An example of a zooplankton that is very important to many pelagic communities is ____.

Accepted Answer

A)  krill
B)  squid
C)  coccolithophores
D)  diatoms

Question 5

Which type of organism is responsible for harmful algal blooms, or HABs?

Accepted Answer

A)  diatoms
B)  dinoflagellates
C)  coccolithophores
D)  foraminifera

Exam 13: Pelagic Communities

Where, through a year, is the greatest total oceanic primary productivity?