Ch. 32 Flashcards
Eukaryotic, multicellular, heterotrophic (ingestive)
animals
Plants are ___ because they make their own food
autotrophs
Porifera are ___; have no separate tissues (tissue layers), no body symmetry or digestive system
sponges
Have 2 tissue layers (diploblastic), radial symmetry, and incomplete digestive systems
cnidaria and ctenophora
3 tissue layers (triploblastic); bilateral symmetry and complete digestive systems
bilateria
What are the two germ layers (tissue layers)?
endoderm and ectoderm
What are the 3 germ layers (tissue layers)?
ectoderm, mesoderm, and endoderm
Only one opening, gastro-vascular cavity;
same kind of tissue
EX. cnidaria
incomplete digestive system
Two openings, mouth and anus;
some digestive here and other parts here
–> specialization of digestive structures
complete digestive system
One gut opening to two gut openings is an example of an ___ trend
animal
Name of the group that has no true tissues, asymmetry, and no digestive system
metazoan
Name of group that is diploblastic (2 tissue layers)
eumetazoa
Name of group that is triploblastic (3 tissue layers)
bilateria
Backside
dorsal
Abdominal side
ventral
Front (toward head)
anterior
Back
posterior
Top and bottom; has no CNS, hard to establish centralized location
radial symmetry
Front and back; sensory information aggregates at front (anterior end) –> brain
bilateral symmetry
Radial and spiral, determinate or indeterminate
cleavage
Includes mollusks, annelids, and arthropods; spiral and determinate (cleavage)
protostomes
Includes echinoderms and; radial and indeterminate (cleavage)
deuterostomes
What cells become are determined by location of cell such as in ___
mollusks
A body cavity
coelom
Flat worms are a kind of ___.
Includes 3 tissue layers, no cavity, and are bilateral
acoelomate
Has body cavity, inside mesoderm
coelomate
Becomes the mouth in things such as mollusks
blastopore
Make shell-like structure that they can shed, exoskeleton
ecdysozoa
