all animals except sponges
animals unicellular or multicellular?
Animals are heterotrophic or autotrophic
Animals have an ___ in which they ingest food
Symettry in the following animals:
Distinctive tissue layers in Hydra
2, everything else 3
innermost tissue layer, around digestive tract
middle, most numerous, muscle tissues
outermost, body covering, skin
body cavity present?
3 tissue layers=body cavity, <3 = no cavity
flatworm, no true cavity, mesoderm fills where cavity would be
nematode, cavity between mesoderm and endoderm, length of animal
degrees of segmentation
linear repitition, ribs, vertebrae
sensory equip concentrated toward front or head as in humans
sponges, cessile as adult, move as larvae
support structures, prevent entry of animals
Corals, Jellyfish, Hydra. Tissue Grade, no specialized organs. Radial Symmetry.
Only free living , non parasitic organisms
Planarians, flukes, tapeworms
projects from each side of head
Dorsal is the ____ side and Ventral is the ____ side
What organs are present for excretion of nitrogenous waste in a nematode (roundworm)?
lateral excretory canals
What organs are present for excretion of nitrogenous waste in a earthworm?
What organs are present for excretion of nitrogenous waste in a cordate?
Roundworms, males have a hook
Earthworms, tubeworms, leeches
clams, oysters, snails, squid, octipi, slugs, chitons
What type of body cavity does a planaria (flatworm have)?
no true cavity (acoelomate)
What type of body cavity does a Ascaris (roundworm) have?
What type of body cavity does a lumbricus (earthworm) have?
True or False. Clams have an open circulatory system