asymmetry; no germ layers; no cephalization; no coelom; invertebrates; yellow, red tree, tube sponges; no gut
found in sponges; provide structural support and deter predators
diploblastic (endoderm and exoderm); radial symmetry; acoelom and sac gut; no skeleton (hydrostatic)
in the epidermis of tentacles; delivers stinging venom that paralyzes prey and enable Cnidarins to catch their victim
interconnected nerve cells around the body; conducts stimulus
saucer or dorm-shaped; refers to any free-swimming jellyfish stages in Cnidaria
attatches to bottom of the sea and asexually terns into a jellyfish
Psuedocoelomates; triploblastic; one way gut; unsegmented; bilateral; invertebrate; parisitic
to grow and live off of something else; one benetfits and host is harmed
bilateral symmetry; coelom; triploblastic; cephalization;segmented; hydrostatic skeleton
excretory structure that filters body fluid in earthworms; kidney structure
where food is chewed; hard
stomach that adds digestive enzymes; squishy
a type of mollusk; clams and oyesters
What are flagellated cells that move the water through the sponge?
What body form do many cnidarians have?
What do you call the sections in a flat worm?
Where is the nerve cord and the main blood vessel in earthworms?
nerve cord- ventral; blood vessel- dorsal
What type of circulatory system do earthworms have?
aortic arches; closed circulatory system
What type of tissue would you find around gut of a earthworm?
How do earthworms differ from nematodes(roundworms)?
earthworms have true ceolom
What type of ciruclatory system does a squid (mollusk) have?
closed ciruclatory system
Do squid's tentacles have cnidocytes?
no they have suckers
Where are the nerve cord and heart in the crayfish? (protostomes)
nerve cord- ventral; heart- dorsal
What is the exoskeleton of the crayfish made out of? (arthropods)
Where are the main artery and nerve cord in the grasshopper? (protostomes)
main artery- dorsal; nerve chord- ventral
What is a ganglion?
group of internuerons (brain)
What system do starfish use for locomotion
What does a starfish's digestive gland do and where are they found?
secretes digestive enzymes and are found in the rays right above the tube feet
How does reproductive tissue in a starfish differ in appearance from their digestive glands?
distive gland look like soggy poop and reproductive gland were pinkish and ciruclar
Wher eis a sea cucumbers (echinodermata) mouth?
What 4 characterisitics are common in all chordates?
notochord, paryngeal pouches, hollow dorsal nerve chord, post anal tail
How does a sea squirt get its food?
they filter feed
What does a notochord and gill slits provide for the embryo?
notochord: helps embryo gorw and form motor nuerons in spinal chord; gill slits: helps trap suspended food particles
Where is the nerve tissue and blood tissue in Lamprey and hagfish?
nerve tissue: dorsal; blood tissue: ventral
What is new in Lamprey an dhagfish which wasn't present in the lancelet?
What type of vertebra do sharks have?
What new advance is foudn in sharks than the hagfish and lamprey?
What is the structure in bony fish that protects the gills?
What type of heart does a bony fish have?
2 chamber heart
What two strucutre sod amphimbians use to breath in air?
the skin and lungs (gills)
How many chambers are found in an amphimbians heart?
What is the skin like in an amphibian?
they can breathe through their skin and soak up water; slimy mucus layer
What is the skin like in a reptile?
rough; contains connective tissues and small bones
How do reptiles have gas exchange?
have spongy lungs which increase surface area and moveable ribs
Are reptiles ectotherm or endotherms?
What new advances to luncgs, heart, and bones help birds to fly?
4 chambered heart- high metabolism; one way lungs- allows them to breath more air faster; acellular bones- lightweight
Are birds ectotherms?
egg laying mammals
bear live young at an extremely early age and attatches to a nipple which is in a pouch
becoming pregnant (humans)
groups that has a highly developed cerebrum and complex behaviors
in the epidermis of tentacles of cnidarians; stinging structure
when the cavity is between mesoderm and endoderm
when the body cavity is completely surrounded by mesoderm
Who has ladder type nerves? and what are they?
flatworms; 2 long chords
What does a close circulatory system have?
triploblastic; bilateral; coelom; one way gut; invertebrate; clams and octopi (bivalves and squid)
group that includes snails and slugs
invertebrae with a large head
heart that pumps blood thorugh closed circulatory system
triploblastic; bilateral; coelomate; one way gut; exoskeleton; jointed appendages
What kind of circulatory system does a cray fish or arthropod have?
What does the water vascular system in starfish do?
moves tube feet, water, oxygen, wastes, and nutrients
triploblastic; pentaradial symmetry; one way gut; coelomate; endoskeleton, but not chordate; sea cucumbers
triploblastic; bilatera; ceolom; one-way gut; invertebrate; chordate
bilateral; triploblastic; coelomate; one-way gut; invertebrate; chordate
lamprey and hagfish
triploblastic; bilateral; one-way gut; ceolomate; chordate; vertebrate; cartilage skeleton
triploblastic; bilateral; coelomate; one-way gut; vertebrates and chordates; sharks
bilateral; triploblastic; one-way gut; ceolomate; chordate; vertebrate
What characteristics are new in mammals?
hair and mammary glands (give milk)
triploblastic; bilateral; one-way gut; coelom; chordate; vertebrate; frogs; have to reproduce in water; chordate; vertebrates
bilateral; triploblastic; coelom; one-way gut; chordate; vertebrates
triploblastic; bilateral; coelomate; one-way gut; endoskeleton; vertebrate; chordate
triploblastic; bilateral; coelomate; one-way gut; endoskeleton; vertebrates; chordates
opening in abdomen of crustaceans that allow air into trachea
chordates that filter feed on the bottom of the ocean using siphons
What is a scolex of a flatworm (tapeworm)?
the head part
What do eyespots do for tapeworms?
they sense light and dark
What are flamecells in flat worms?
they act as kidneys
triploblastic; sac gut; aceolomate; bilateral; invertebrate
make their own food to get energy
use sun and light to get energy and make sugar
obtains food by consuming living things; aka consumers
decomposers; feeds on dead matter
catch algae or small animals by using modified gills or other structures as nets that filter food items out of water; spend their lives in a single spot
eats other animals to obtain energy; uses pointed teeth and sharp claws
eats plants or parts of plants to obtain energy; leaves wear down teeth
eats both plants and animals to obtain energy
What is homeostasis and why is important?
the balance of the inner and external parts of you body; has to be there otherwise bodily functions cannot occur