Marine Science Exam Review

Front

What is sea floor spreading?

Back

Sea floor spreading is the process by which new oceanic crust is formed at mid-ocean ridges and older crust is pushed away, leading to the expansion of the ocean floor.

Front

What is the symmetry of Mollusca?

Back

Mollusca exhibit bilateral symmetry, meaning their body can be divided into two equal halves along one plane.

Front

How does seagrass reduce erosion?

Back

Seagrass reduces erosion by softening the waves with their leaves, which helps to stabilize the sediment.

Front

What are the three main body parts of a mollusk?

Back

The three main body parts of a mollusk are the foot, mantle, and radula.

Front

What is ocean acidification?

Back

Ocean acidification is the decrease in pH levels of the ocean due to the absorption of excess carbon dioxide from the atmosphere, which can harm marine life.

Front

What is the role of the mantle in mollusks?

Back

The mantle is a significant part of a mollusk that secretes the shell and covers the internal organs.

Front

What is a radula?

Back

A radula is a tongue-like organ found in mollusks that is used for feeding, often covered with tiny teeth.

Front

What are the environmental impacts of overfishing?

Back

Overfishing can lead to the depletion of fish populations, disrupt marine ecosystems, and affect the livelihoods of communities dependent on fishing.

Front

What is the continental shelf?

Back

The continental shelf is the submerged border of a continent that slopes gently into the ocean, rich in marine life and resources.

Front

What is a sea mount?

Back

A sea mount is an underwater mountain formed by volcanic activity, often providing unique habitats for marine organisms.