SAAT Biology Section 3 (Animal Kingdom) - تحصيلي

Which term describes an extension of an organism’s body?

Appendage

Which arthopod group is extinct?

Trilobites

The main disadvantage of an exoskeleton is that it

Cannot grow and alter as the animal does

An arthopod’s body parts are segemented into similar sections that

Have each evolved to perform a different function

Which term describes the process that arthopods use to develop a new exoskeleton?

Molting

What are mandibles?

Appendages used to crush and bite food before ingestion

Sessile filter deefers wrapped in a heavily calcified shell are known as

Barnacles

Which of the following body parts covers a crustacean’s cephalothorax?

Carapace

Filter feeding crustaceans feed on

Microscopic crustaceans

Decapods are so-called because they have how many legs?

Ten

Which of the following body parts do chelicerates lack?

Mandibles

When spiracles on an arachnid’s body open, they let in

Oxygen

Of the four adaptions that enable arachnids to conserve water, which one also removes wastes?

Malpighian tubules

Scorpions and spiders share the ability to

Immobilize prey by injecting venom

Which of the following chelicerates are parasites of other animals?

Ticks

Insects that look like miniature adults when they hatch have a pattern of development called

Incomplete metamorphosis

Which adaptations was most important in enabling insects to live on land?

Ability to control water and gas exchange

All insects have three

Body parts

Insects reduce the amount of energy they use for flight by

Using kinetic energy stored in their flexible cuticules

What does the proboscis allow some insects to do?

Feed on blood or plant nectar

All vertebrates are classified in the phylum

Chordata

The earliest vertebrates were

Fish

A major difference between a hagfish and more evolved vertebrates is that it

Does not have vertebae

What four features do all chordates share at some point during development?

Notochord, hollow nerve cord, pharyngeal slits, and tail

Which term refers to an internal skeleton built of bone or cartilage?

Endoskeleton

A sessile animal is one that is unable to

Move

Sponges are the only animals that have no

Defenses

Cnidarian ployps reproduct by

Creating buds

What does the gastrovascular cavity do?

Secrete digestive enzymes

What is mesoglea?

A non-cellular jellylike material in cnidarians

Tapeworms live in

Vertebrate guts

What is radula?

A mollusk’s feeding organ

The coelom enables annelids to

Move by crawling

Which of the following describes a planarian?

Bilateral, nonparasitic flatworm

In mollusks, blood is pumped through the

Hemocoel

Sea stars feed by

Pushing their stomachs out of their mouths

The only adult echinoderms that do not display radial symmetry are

Sea cucumbers

What is the term for the plates that form an echinoderms’ skeleton?

Ossicles

A sea star uses its tube feet to

Grab objects and move around

What is the function of the water vascular system?

Store water for circulation and to fill tube feet