Phylums to Classes Flashcards
What are the characteristics of phylum Porifera ?
Porous
Asymmetrical
No tissues or organs
What animals are in phylum Porifera ?
Sponges
What are the characteristics of phylum Cnidaria ?
Radial symmetry
Carnivorous
Some nerves and muscles
What animals are in phylum Cnidaria ?
Jellyfish
Anemones
What are the characteristics of phylum Platyhelminthes ?
Simplest brains
Some organs, muscles and nervous tissue
Bilateral symmetry
What animals are in phylum Platyhelminthes ?
Flatworms
Tapeworms
Flukes
What are the characteristics of phylum Nematoda ?
No appendages or segments
Have a cavity that acts as an early circulatory system
What animals are in phylum Nematoda ?
Roundworms
What are the characteristics of phylum Mollusca ?
No segments or appendages
Some have shells
Some start to go on land
What animals are in phylum Mollusca ?
Snails
Slugs
Octopus
Oysters
What are the characteristics of phylum Annelida ?
Segmentation Specialization of tissue Non-jointed appendages Multi-organ digestive system Circulatory system
What animals are in phylum Annelida ?
Earthworms
Sandworms
Leaches
What are the characteristics of phylum Arthropoda ?
Jointed appendages Exoskeleton made of chitin and protein Segmentation Open circulatory system with a heart Gas exchange breathing system
Why is Arthropoda considered the most successful phylum ?
DIversity
Distribution
Size
What animals are in phylum Arthropoda ?
Insects
Myriapods (cetipedes and millipedes)
Crustaceans
Chelicerates (spiders, scorpions, ticks, mites)
What are the characteristics of phylum Echinodermata ?
Pentamerous radial symmetry in adults
Bilateral symmetry and segmentation in larvae
Generally sessile as adults
Hard exterior, spiny
What animals are in phylum Echinodermata ?
Sea stars
Sea cucumbers
Sea urchins
Sand dollars
What are the characteristics of phylum Chordata ?
Segementation
Cephalization
Appendages
and way more
What are the 4 distinguishing traits of phylum Chordata ?
Notochord
Dorsal hollow nerve cord
Pharyngeal slits
Muscular postanal tail
What is the notochord ?
A flexible, structural cord that exists in all embryos
What do the pharyngeal slits do ?
It allows water entry (needed when having a closed digestive system)
What are the 3 subphylum of Chordata ?
Cephalochordates (Lancelets)
Urochordates (Tunicates)
Vertebrates
What are the characteristics of subphylum Cephalochordate ?
Invertebrates
Filter-feed
Weak swimmers
What are the characteristics of subphylum Urochordate?
Invertebrates
Adults are sessile
Filter-feed
What are the characteristics of subphylum Vertebrates ?
Have a spinal column that surroundsd and protects the dorsal nerve cord Cephalization and craniation Eye development Mouth Internal mineralized skeleton
What are the characteristics of class Myxini ?
Jawless fish
Unpaired limbs
No vertebrae
Have skeleton and cranium (all cartilage)
What animals are in class Myxini ?
Hagfish
Lampreys
What are the characteristics of class Placodermi ?
Jawed fish
Armoured
Extinct class
What classes are in the subclass Gnathostome ?
All classes in which the animals have jaws.
What classes are in the subclass Agnathostome ?
Myxini
What are the characteristics of class Chondrichthyes ?
Cartilaginous fish
Have jaws and a full cartilage skeleton
Have paired fins
What animals are in class Chondrichthyes ?
Sharks
Rays
What are the characteristics of class Actinopterygii ?
Can store the air they draw through their gills Have a swim bladder Have bony scales 2-chambered heart Can regulate salt balance External fertilization
What animals are in class Actinopterygii ?
Fish
What are the characteristics of class Actinista ?
Lobed limbs
“Walk” under water
What animals are in class Actinista ?
Coelocanth
What are the characteristics of class Dipnoi ?
Have lobed limbs
Can take in air from out of the water and store it
What animals are in class Dipnoi ?
Lungfish
What are the characteristics of class Amphibia ?
Lead “double lives”
Larvae are underwater, have gills, eat algae
Adults have limbs, lungs, “ears”
Must keep their skin moist even when adult
Adults reproduce in water (external fertilization)
What animals are in class Amphibia ?
Frogs
Salamanders
What are the characteristics of class Reptilia ?
Live on land
Have a dry and scaly skin
Internal fertilization
Amniotic eggs
What animals are in class Reptilia ?
Snakes
Birds
What are the characteristics of birds ?
Bipedal
Adapted for flight
What are the characteristics of class Mammalia ?
Hair Mammary glands 4-chambered heart Warm blooded (endothermic) Heterodonts
What orders are in class Mammalia ?
Order Monotremata
Order Marsupials
Order Placentals
What are the characteristics of order Monotremata ?
Lay eggs
Secrete milk onto their hair
Show traits of birds and reptiles
What animals are in order Monotremata ?
Platypus
Echidna
What are the characteristics of Marsupials ?
Give live birth
Females have a pouch in which the baby remains to further develop
What animals are Marsupials ?
Kangouroo
Koala
What are the characteristics of Placentals ?
Give live birth
Females have a placenta
What animals are Placentals ?
Us
All other mammals
Rodents
Bats