Exam 10: Marine Communities

Primary productivity in estuaries is high because .

An estuary is where rivers meet the ocean and where freshwater and seawater mix.

Tropical coral reefs typically form in areas of high wave energy.

How do marine reptiles and seabirds deal with the salinity of seawater?

Toothed whales (Odontoceti) can search for prey using .

Marine mammals are .

Sharks have skeletons made of cartilage, not bone.

Species abundance and diversity is generally higher on the deep ocean floor than in the part of the water column immediately above it.

Which of the following organisms is a cephalopod?

Compare and contrast the toothed whales and the baleen whales.

In the gill of a fish, water and blood circulate , which transfer efficiency.

What does "ecological black market" mean and how does it relate to the official economy of the food chain?

Benthic organisms live .

Most seabirds live in the northern hemisphere.

Zooplankton are the most numerous primary consumers in the ocean.

In classifying the ocean by light level, the primary divisions are between neritic and oceanic zones.

The distribution of phytoplankton in the ocean is directly influenced by the distribution of nutrients.

are vascular plants that are successful in low, muddy coasts in tropical and semitropical areas.

refers to organisms that live on or are associated with the bottom.

Organisms that spend their entire life cycle as plankton are called .