zoology winter final

Animals that must eat other organisms to gain the nutrients they need to survive are called

heterotrophs

animals that can reproduce are diploid, meaning that they have one set of

chromosomes from each parent

in what way can animals with bilateral symmetry be divided

in 2

in protostomes, first the mouth is formed and then the

anus

the sand dollar has what symmetry?

radial

Sponges' inability to move from where they are attached means that they are

sessile

Sponges are the only animals that have no

tissues

Sponges reproduce asexually by

budding

what is the main difference between the sponge and worm

the sponge does not have tissue

what does the gastrovascular cavity of a cnidarian do

digests

What is the mesoglea?

a non-cellular jellylike material in cnidarians

what are tapeworms

worms that can live in the digestive tract of an animal or person

how could you describe a planarian

flat wedge shape body

In mollusks, blood is pumped through the

radula

what is a radula

used for drilling holes and feeding

Roundworms that feed on their host's blood are

parasites

Guinea worm infections can occur when a person

drinks contaminated water

which arthropod went extinct

trilobites

the main disadvantage of an exoskeleton i that it

cant grow

which term describes the process that arthropods use to develop a new exoskeleton

molting

what are mandibles

appendages used to crush and bite food before ingestion

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

barnacles

which body part covers a cristaceans cephalothorax

carapace

which mouth part do chelicerates lack

antennae and mandibles

when spiracles on an arachnids body open they let in

oxygen

which adaptation enables arachnids to remove wastes

malpighian tubules

scorpions and spiders share the ability to

inject venom

which chelicerate are parasites of other animals

ticks

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

incomplete metamorphosis

which adaptation was most important when enabling insects to live on land

ability to control water + gas exchange

all insects have three

pairs of legs / body parts

what term describes an organism that carries a disease from one host to another

vector

insecticides are chemical compounds that

kill insects and other arthropods

what is an unintended consequence of insecticide

it increases the growth of harmful insect populations

The entire surface of an arthropod's body is covered by a protective

cuticle

Barnacles, isopods, and tongue worms are all examples of

crustaceans

Which of the four animals shown below is a chelicerate?

da spider

how many distinct body sections do crustaceans have

3

Insect wings are extensions of the

exoskeleton

an organism that carries a disease from one host to another is known as a

vector

what is the arrow on the lobster pointing to

chelliped

an animal that has eight legs fang like pincers, and the ability to produce silk is a(n)

arachnid

which of the following are the most commonly known myriapods

centipedes, millipedes

which echinoderms are the only member of the class Holothuroidea

sea cucumbers

what is the term for the plates that form an echinoderm's skeleton?

ossicles

what is the function of the water vascular system

store water for circulation and to fill tube feet

An echinoderm's radial canals that extend along each arm are part of its

water vascular system

sea stars feed by

predatation of small animals

a sea star uses its tube feet to

move around