Exam 14: Estuaries

Match the area with the type of estuary. -Well-mixed estuary

The dominant plant species closest to the water line of salt marsh communities is:

An example of a species that uses the estuary as a nursery ground is the:

Mud flats are typically low in organic matter.

All of the following are adaptations to remain stationary in the ever-shifting soft bottom of estuaries except:

Estuaries in which river flow is strong and prevents the flow of seawater upstream are called:

Match the genus with its most closely associated common name. -Oyster drill

Define the following terms:

Match the primary producer with its most closely associated herbivore. -Thalassia

Oyster reefs are usually oriented at right angles to the currents in estuaries. How do you think this could be an advantage to the oysters living in this community?

Estuaries are important nurseries because of the relatively low numbers of predators in these areas.

All are true of oyster reefs except

All of the following tend to hold nutrients in estuaries for use by other organisms except:

Most of the animals of mud flats are:

Many of the burrowing animals of the mud flat must actively

An example of an osmoregulator at low salinities and an osmoconformer at higher salinities is a(n):

Where rivers slow and drop their sediment load they form deltas termed:

The major source of nitrogenous nutrients in estuaries is incoming seawater.

What properties of estuaries make them highly productive areas?

Match the species with its most closely associated salinity concentration type. -Both osmoconformer and osmoregulator