Which of the following is not an adaptation of deep-sea fishes?

Hinged jaws

Good sensory devices such as sensitive lateral lines

Counter-illumination

Large body sizes

Large mouths with sharp, needle-like teeth

 

Which of the following is the most important function of schooling in small fish?

Male fertilization of eggs released into the water

Moving in the same direction

Invade the territory of larger species

Protection from predators

Aggressive species can't chase away the whole school

 

A remora attaching itself to a shark to obtain food and transportation without harming its host is an example of which of the following types of symbiotic relationship?

Commensalism

Mutualism

Naturalism

Parallelism

Parasitism

 

 

 

The stinging tentacles of a sea anemone protecting a clown fish which chases away any fish that tries to feed on the anemone is an example of which of the following types of symbiotic relationship?

Commensalism

Mutualism

Naturalism

Parallelism

Parasitism

 

Whales evolved from a land-dwelling ancestor similar to which of the following?

Yak

Hippopotamus

Bear

Mastodon

Elephant

 

Which of the following statements regarding sea otters is correct?

They are some of the largest marine mammals.

They no longer inhabit all areas where they were hunted.

Their bodies are covered with sparse hairs, which are concentrated around the mouth.

They continually lick themselves to clean their fur and add an insulating layer of air.

They are one of the few types of animals known to use tools.

 

 

 

Which of the following statements regarding polar bears is correct?

Their diet consists mainly of walrus.

Their fur is thick, and each hair is dense for better insulation.

They were hunted to the brink of extinction in the late 1800s.

They have small teeth and sharp claws, which they use for prying and killing.

They have massive webbed paws that make them excellent swimmers.

 

 

Which of the following statements regarding seals is correct?

They lack claws that extend from their fore flippers.

They can move around on land very well resembling speedy caterpillars.

They are called the eared seals or false seals.

They can move their rear flippers underneath their bodies.

They propel themselves through water by using their rear flippers.

 

 

 

Which of the following statements regarding Manatees is correct?

They are short animals that can reach lengths of only up to 2 meters.

Their fur is thick, and each hair is dense for better insulation.

They populate the tropical regions of the Indian and Western Pacific Oceans.

They eat more than 50 kinds of marine life.

Their front flippers have nails that resemble the nails on elephant feet.

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