List the characteristics of vertebrates that other chordates lack. How does a ha

Question

List the characteristics of vertebrates that other chordates lack.

How does a hagfish escape predators?

Describe the feeding habits of an adult lamprey.

Describe the sensory structures seen in a shark and indicate how they assist in prey capture.

Describe the function of an operculum that bony fish possesses.

Describe an anamniotic eggs of amphibians.

How does an ectotherm maintain proper body temperature?

Describe why an amniotic egg of reptiles is an important adaptation for a terrestrial existence.

List three characteristics unique to reptiles.

How is sex determined in American alligators?

List two characteristics birds share with other reptiles.

What are mammary glands used for?

Describe three functions of hair in mammals.

What are ossicles in the mammalian ear?

Explanation / Answer

A jointed endoskeleton in vertebrates is the characteristics of vertebrates that other chordates lack.

Hagfish escapes predators by using slime.

Adult lamprey attaches to the sides of the fishes to gradually digest it.

Lateral line and ampullae of lorenzini are present in shark. These help in prey capture by analysing the electric field modification by the preys.

Operculum serves as a protective structure covering the gills.

Anamniotic eggs does not contain shells covering the embryo and anamion. Instead they have jelly-like embryo with sac.

Ectotherm has the body temperature that is similar to the environment. So they don't have to regulate the temperature.

In amniotic egg, the presence of the shell protects the embryo from drying and the amniotic fluid protects the embryo.

Uniques characteristics:

Warmer temperature results in male alligators and cold temperature results in female alligators.

Two characteristics birds share with other reptiles:

Mammary glands used for the production to feed the offspring with milk.

Funtions of hair:

Ossicles are 3 small bones present in ear, namely malleus, incus and stapes.

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