Chapter 9: Marine Reptiles, Birds, and Mammals

Mammals are classified by having which of the following characteristics?

-Endothermic -Newborns are fed by milk secreted from mammary glands -they have hair

Which of the following is a marine reptile?

-Green sea turtle -Sea snake -Marine iguana -Saltwater crocodile

Marine mammals often have blubber. Which purposes does the blubber provide to the animal?

-serves as insulation against cold -provides buoyancy -serves as a food source

The sea otter is which of the following?

-smallest truly marine mammal -lacks a layer of rubber -uses air trapped inside it's dense fur to retain heat

How many species of marine amphibians are there today?

0

Cetaceans often use what sense (similar to sonar) to locate food and navigate through their surroundings?

Echolocation

The largest animal on Earth, the blue whale, is a baleen whale. What type of food would a blue whale most likely consume?

Small fish and krill

With the exception of the leatherback sea turtle, which best describes marine reptiles with respect to body temperature?

They are poikilotherms and ectotherms

Seabirds have many adaptations that help them survive. Which of the following is NOT an adaptation to life at sea?

They possess a swim bladder similar to fish to help with flight

The largest group of marine mammals belong to the order Cetacea (called the cetaceans). Which group of animals is this?

Whales, dolphins, and porpoises