Biology: Animal Classification Review Packet
other arthropods: arachnids have ----- legs and no antennae
8
Flatworms: flatworms belong to the phylum --------
Platyhelminthes
Segmented Worms: segmented worms are the most ------ worms
advanced
Segmented Worms: segmented worms belong to the phylum -------
annelida
Arthropods: structures that grow from the body are called --------
appendages
other arthropods: spiders belong to a group called --------
arachnids
other arthropods: spiders use structures called ------ lungs to breathe
book
Segmented Worms: the segmented worms also include the ------- -----
bristle worms
Mollusks: the ------- is the most complex mollusk
cephalopod
Arthropods: the exoskeleton is made of -----
chitin
Segmented Worms: earthworms have a ------ circulatory system
closed
Cnidarians: the tentacles contain ------ that are used to capture prey
cnidocytes
Segmented Worms: the ----- is a liquid-filled space that holds the internal organs
coelom
Cnidarians: polyps usually live in -------
colonies
Insects: social animals live in ------
colonies
Insects: the 2 kinds of metamorphosis are --------- and -------
complete incomplete
Roundworms: roundworms have a --------, or a complete digestive system
continuous
Echinoderms: sea cucumbers feed -------
continuously
Sponges: the outer layer of the cells is made up of ------- cells
covering
other arthropods: -------- are a food source for many animals, including man
crustaceans
Roundworms: roundworms have a tough, waxy covering called the ------
cuticle
Echinoderms: brittle stars will break off an arm as a method of ------
defense
Arthropods: chitin has a waxy coating to prevent ------
dehydration
other arthropods: the 2 divisions of the worm-like arthropods are the ------ and the -------
diplopods chilopods
Insects: the stages a butterfly goes through during development are ----, -----, -----, and ------
egg larva pupa adult
Insects: the stages a grasshopper goes through are ----, -----, and ----
egg nymph adult
Flatworms: the 3 cell layers of worms are ----- (inner), ------- (middle), and ----- (outer)
endoderm mesoderm ectoderm
Echinoderms: brittle stars move ---- than the starfish
faster
Echinoderms: the starfish uses its tube feet to move and ------
feed
Sponges: sponges get food by -------
filter-feeding
Sponges: collar cells have little whips called -------
flagellas
Echinoderms: while sea urchins are round, sand dollars are -----
flat
Flatworms: ------ are the simplest worms
flatworms
Arthropods: arthropod means jointed -----
foot
Flatworms: the --------- planarians do not depend on other organisms for survival
free-living
Roundworms: most roundworms are -------, but some are ------
free-living parasites
Arthropods: the 3 body regions of most arthropods are ------, ------, and -------
head thorax abdomen
Roundworms: --------- is transmitted through a mosquito bite
heartworm
Roundworms: -------- can be acquired by walking barefoot over dirt
hookworm
Flatworms: parasites require a ----- in order to live
host
Cnidarians: while most cnidarians are marine, the ----- lives in freshwater
hydra
Arthropods: the largest class of arthropods is -----
insecta
Arthropods: the 3 main characters of an arthropod are -------, --------, and ---------
jointed legs segmented body exoskeleton
other arthropods: arthropods make up the ----- animal group
largest
Insects: the caterpillar stage of insect development is called ------
larva
Segmented Worms: at one time, doctors used ---- to suck "bad blood" from patients
leeches
other arthropods: crustaceans include ------, -------, and ------
lobsters crabs shrimp
Mollusks: the ------ secretes the shell for many mollusks
mantle
Sponges: most sponges are -------, but some live in freshwater
marine
Cnidarians: jellyfish have a ------ body form
medusa
other arthropods: arthropods must ----- in order to grow
molt
Roundworms: roundworms have 4 types of organs: ------, ------, -------, and ------
muscle nerve excretory reproductive
Cnidarians: the cnidocytes have poison arrows connected to threads called --------
nematocysts
Roundworms: roundworms belong to the phylum ------
nematoda
Mollusks: mollusks have an ----- circulatory system
open
Echinoderms: sea cucumbers will give up their ----- as a method of defense
organs
Sponges: sponges have a large opening called an ------
osculum
Sponges: pores in the side of the sponge are known as ------
ostia
Segmented Worms: the leech is a ------- annelid
parasitic
Mollusks: somtimes a mollusk will coat an irritant with a substance to make a ------
pearl
Flatworms: the flatworm phylum includes -------, -------, and --------
planarians tapeworms flukes
Echinoderms: sea urchins and sand dollars have skeletons made of calcium carbonate -----
plates
Cnidarians: cnidarians with the ------- body form, have tentacles that point up
polyp
Cnidarians: cnidarians have ------ symmetry
radial
Mollusks: the gastropods have a ------, or tongue-like organ
radula
Echinoderms: echinoderms can often ----- lost body parts
regenerate
Flatworms: the planarians can -------- damaged parts
regenerate
Sponges: sponges can grow back missing parts through --------
regeneration
Segmented Worms: the term annelid means "little -------"
rings
Sponges: adult sponges are --------, meaning they remain in one place
sessile
Segmented Worms: segmented worms use ------- for movement
setae
Mollusks: the bodies of most mollusks are covered by a -----
shell
Cnidarians: corals secrete a calcium carbonate ------ around their bodies
shelter
Segmented Worms: the earthworm breathes through its -----
skin
Mollusks: all mollusks are ------ invertebrates
soft-bodied
Sponges: ------ link together to form a simple skeleton for the sponge
spicules
other arthropods: arachnids include -------, -------, ------, and ------
spiders scorpions mites ticks
Echinoderms: some echinoderms are leathery-skinned, while others have -----
spines
Insects: complete metamorphosis involves 4 ------
stages
Cnidarians: cnidaria means ----- cells
stinging
Echinoderms: in order to feed, the starfish pushes its ----- out of its mouth
stomach
Flatworms: the ------ is a flatworm parasite found in the intestine of almost every kind of animal
tapeworm
Cnidarians: cnidarians have cell layers organized into -----
tissue
Roundworms: the -------- worm enters humans in the form of a cyst
trichina
Sponges: ------- cells carry food and oxygen within the sponge
wandering
Mollusks: the cephalopods have ------ ----- system for swimming
water vascular
