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Exam 21: Animals

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Question 21

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Figuer: -The observation that Tiktaalik had both gills and lungs suggests which of the following?

A) It could absorb oxygen from both the air and water.
B) It could absorb oxygen from the air.
C) It could absorb food from the water.
D) It could absorb oxygen from the water.
E) It could absorb both food and oxygen from the water.

F) D) and E)
G) A) and B)

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Question 22

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A description of sharks that does not apply to other fish groups is that

A) they are bony, with ray-finned appendages.
B) they are cartilaginous craniates with jaws.
C) they are cartilaginous craniates without jaws.
D) they are bony with lobe-finned appendages.
E) they have scale-less skin with lateral lines for sensing vibrations.

F) C) and D)
G) A) and B)

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Question 23

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A sea squirt is an example of a

An internal membrane in chordates that protects the developing fetus is the notochord.

Which of the following does not have a true coelom?

The function of vertebrae is to

Mollusks that have two-part hinged shells are called bivalves.

Corals and jellyfish belong to the phylum containing the

In your biology lab,you use a stereoscopic microscope to observe a living animal that uses only one opening to both take in its food,and also eject its waste products after having eaten and digested the food for metabolism.This body arrangement of the animal is which of the following?

In biology lab,you are observing and dissecting flatworms.Their bodies are very thin,even see-through,and their thin body surface allows them to exchange gases of oxygen and carbon dioxide with the underlying cells and tissues.Flatworms lack which of the following anatomical systems?

Which of the following is an amphibian?

Presence of vertebrae is a shared characteristic among all chordates.

Which adaptations in fishes enabled vertebrates to thrive on land?

A mollusk that has arms connecting directly to the head of the animal is a

Figuer: Main animal groups are noted at the right. Names diverging at each node are morphological or body form names. Note that the animal traits key to distinguishing the groups and body forms are not shown. -Prior to the divergence of animals,an ancestor is proposed to have developed the key shared trait of all animals,the

The most obvious characteristic of annelids is the repeated segments that make up their bodies.They also have a complete digestive system,and a coelom.Which of the following is true of an annelid?

Spiders and scorpions belong to the phylum containing the

The free-swimming tunicate larva resembles a tadpole. Once it settles headfirst onto a solid surface the tail and notochord disappear, and the nerve cord shrinks to nearly nothing. The adults, which are usually sessile, retain only the pharyngeal slits. Neither adult nor larva is segmented. -Tunicates have which of the following traits?

Flatworms have bilateral symmetry.

Flatworms have complete digestive tracts.