Multiple Choice: The American eel is born is born in the Sargasso Sea, moves to rivers as far inland as Oklahoma, and then returns to the Sargass Sea...

Multiple Choice: The American eel is born is born in the Sargasso Sea, moves to rivers as far inland as Oklahoma, and then returns to the Sargass Sea to breed. It has a ___ life cycle.

complex

catadromous

amphidromous

anadromous

1 points  

Multiple Choice: The clownfish transitions from male to female based on its surroundings. It is an example of

Simultaneous hermaphroditism.

Protogyny

Protoandy

Monoecious

Multiple Choice: Which survivorship curve best describes most marine organisms (few adults produce large number of eggs and larvae)?

Type I

Type II

Type III

None of the above

1 points  

Multiple Choice: Herds of elephants spread across a savanna is an example of what kind of dispersion?

uniform

clumped

scattered

random

1 points  

Which of the following methods would work best to estimate flower species diversity?

distribution mapping

Lincoln Peterson index

quadrats

mark-recapture

1 points  

Which of the following sampling techniques represents an index of abundance rather than an estimate of density?

ratio of marked and unmarked mice in a field

density of oak trees within a quadrat

number of duck calls captured  by microphones

number of bears observed along transects

1 points  

Of the following, which is mostly likely to be related to an Allee effect?

breakdown of breeding behaviors

increased access to resources

un-controllable growth

changes in maturation rates