1. Planktonic and benthic marine organisms are different than nektonic marine or

Question

1.   Planktonic and benthic marine organisms are different than nektonic marine organisms. Briefly discuss 3 ways nektonic organisms are different from planktonic organisms.

2.   Organisms in the Class Reptilia have many more terrestrial representatives than marine representatives. What are the unique characteristics for organisms in the Class Reptilia?

3.   Marine turtles return to the beaches they were born on to reproduce and lay eggs. Briefly describe why natality is important to marine turtles.

4.   Marine birds are diverse and many have unique (and entertaining) behaviors. First, what are the key characteristics for marine birds? Next, describe how penguins are different than all of the other bird groups. Lastly, briefly describe the courtship behavior of your favorite marine bird.

Explanation / Answer

1.

Planktonic organisms

Nectonic organisms

Can actively swim against current.

2. They are the most common primary producers and provide food for many large aquatic organisms

They depend on planktonic organisms for food.

3. Eg: plants, bacteria, algae

Eg: Sharks, fish, sea lions

Planktonic organisms

Nectonic organisms

1. Cannot swim against current in a body of water.

Can actively swim against current.

2. They are the most common primary producers and provide food for many large aquatic organisms

They depend on planktonic organisms for food.

3. Eg: plants, bacteria, algae

Eg: Sharks, fish, sea lions

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