Classification Of Organisms

Front 1

Phylum Porifera

Back 1

-Adults are usually attached to a solid object

-Pores in body wall connect to an internal canal system that draws in water containing food particles.

Hint 1

Sponges

Front 2

Phylum Cnidaria

Back 2

Two body shapes occur:

-An attached polyp (corals)

-Free floating Medusa (jellyfish)

Tentacles with stinging cells

Blind gut

Radially symmetrical

Hint 2

Front 3

Phylum platyhelminthes

Back 3

-Body usually flattened and bilaterally symmetrical

-Free living or parasitic

-No skeleton or respiratory system

Hint 3

Flatworms

Front 4

Phylum Nematoda

Back 4

-Parasitic or free living

-Cylindrical bodies with no segments

-One way gut

Hint 4

Roundworms

Front 5

Phylum Annelida

Back 5

-Body is internally and externally divided into many segments

-One way gut

-Bilateral symmetry

Hint 5

Segmented worms, bristle worms, leeches

Front 6

Phylum Mollusca

Back 6

-Unsegmented soft body with a mantle (fold of tissue over the body)

-Mouth has a rasp like radula

-Often produce a calcareous shell

Hint 6

Snails, slugs, octopus, oysters

Front 7

Super phylum Arthropoda

Back 7

3 phyla containing animals with exoskeletons and jointed appendages

Front 8

Phylum Chelicerata

Back 8

-Two distinct body segments (cephalothorax and abdomen)

-Most have four pairs of legs

Hint 8

Spiders, scorpions, ticks

Front 9

Phylum Crustacea

Back 9

-Two pairs of antennae

-Exoskeleton of chitin mainly marine

Hint 9

Crayfish, crabs

Front 10

Class insecta

Back 10

-Three distinct body segments (head, thorax, abdomen)

-One pair of antennae

-3 pairs of legs

Hint 10

Insects

Front 11

Phylum uniramia

Back 11

Arthropods with one pair of antennae

Insecta, Diplopoda, Chilipoda

Hint 11

Front 12

Class Diplopoda

Back 12

-One pair of antennae

-Two pairs of legs per segment

(millipedes)

Hint 12

Front 13

Class Chilopoda

Back 13

-One pair of antennae

-One pair of legs per segment

(centipede)

Hint 13

Front 14

Phylum Echinodermata

Back 14

-All marine

-Internal skeleton covered by a skin

-Water vascular system with tube feet that assist in locomotion and feeding

Hint 14

Starfish, sea urchins, sea cucumbers, sand dollars

Front 15

Phylum Chordata

Back 15

-Bilateral symmetry

-Hollow dorsal nerve tube

-Gill slits in throat; altered or lost in most members during embryonic development

Hint 15

Lamprey, sharks, rays, bony fish, amphibians, reptiles, birds, mammals

Front 16

Class agnatha

Back 16

-Fishes with jawless mouths

-Cartilaginous skeleton

(lamprey)

Hint 16

Front 17

Class Chondrichthyes

Back 17

Jaws

Exposed Gill slits

Cartilage skeleton

Hint 17

Sharks and rays

Front 18

Class osteichthyes

Back 18

Fish with bony skeletons

Gills have a bony cover

Hint 18

Bony fish

Front 19

Class amphibia

Back 19

Larval stage (tadpole)

Adults have lungs

Body covered with moist skin

Hint 19

Frogs and toads

Front 20

Class reptilia

Back 20

Body covered with dry scales

Lungs

Ectothermic

Eggs have a leathery shell

Hint 20

Snakes, lizards, crocodiles, turtles

Front 21

Class Aves

Back 21

Covered in feathers

Endothermic

Eggs have hard calcareous shell

Hint 21

Bird

Front 22

Class Mammalia

Back 22

Body covered with hair

Endothermic

Feed young with milk from mother

Hint 22

Mammals

Front 23

Monotremes sub class

Back 23

Lay eggs

Hint 23

Echidna and platypus

Front 24

Marsupials

Back 24

Undeveloped young develop further in mothers pouch

Hint 24

Kangaroo, wallabies, possum

Front 25

Placentals

Back 25

Young develop in mothers uterus

Hint 25

Whales, seals, dogs, cats, bat's, humans