Lab quiz 10

bio335

heterocercal

What term describes the type of caudal tail possessed by sharks?

homocercal

What term describes the type of caudal tail possessed by perch?

3

How many chambers does the amphibian heart have?

swim bladder

What term describes the organ that aids fish in controlling its buoyancy?

Neopterygii

Gars, bowfins, and teleosts are part of which Subclass (“Clade”)?

vertebral column and skull

The axial skeleton of the perch consists of

Anura

To what Order do toads and frogs belong (two possible answers)?

Actinopterygii

To what Class of Chordates do seahorses belong?

Urodela

To what Order do salamanders belong (two possible answers)?

Osteichthyes

To what Clade (“Class”) of Chordates do pufferfish belong?

Draw an example of a homocercal tail OR heterocercal tail.

lamprey

Give an example of Class Petromyzontida (common name OK).

placoid

What type of scale do members of Chondrichthyes possess?

Adult frogs jump and are tailless. Adult salamanders usually have limbs at right angles to trunk; their forelimbs and

hindlimbs are about equal in length

Briefly describe one way to distinguish adult frogs from adult salamanders based on

their morphology.

5

How many phalanges does the frog hind limbs have?

claspers

Male Chondricthyes use their _______________________ to fertilize females.

they cannot regulate their internal body temperature

What trait prevents members of Order Anura (Salientia) from inhabiting cold

environments?

femoral vein, drains from femur region

Name one vein found in the frog. From where does this vein carry blood?

femoral artery carries blood from the heart to the femur region

Name one artery found in the frog. To where does this artery carry blood?

ammocoete

What term describes the larval stage of members of Class Petromyzontida?

males have claspers

in Class Chondrichthyes, how would you distinguish a male from a female?

teleosts

Which group of fish contains about 90% of all fish?

swim bladder

Name the structure that serves as a buoyancy organ in fish

pharyngeal slits, notochord, endostyle

Name 3 of the 5 characteristics of Phylum Chordata?

Chondrichthyes

Sharks, rays, and skates belong to which Class?

nares

What anterior openings allow fish to smell underwater?