BIO 182 EXAM 4 REVIEW QUESTIONS
& ANSWERS (RATED A+)
What are some commone characteristics of animals? - ANSWERmulticellular
heterotrophs
lack of cell walls
nervous tissue
sexual reproduction
Hox genes
What life cycle does all animal show? - ANSWERgametic
What are the likely ancestors of animals? - ANSWERchaonoflagellates protists
What are 3 major features to classify animals? - ANSWER1. presence or absense of
different tissue types
2. type of body symmetry
3. specific features of embryonic development
What are the 3 major groups of mammals? - ANSWERmonotremes
marsupials
eutherians
What is monotremes - ANSWERegg-laying
What are marsupials? - ANSWERpouched mammals with placenta
What are eutherians? - ANSWERcarried offspring to full-term
What are the hierarchy of organisms in animals? - ANSWERcells -> tissues ->
organs -> organ systems
What are the 4 types of tissues - ANSWERepithelial
muscle
nervous
connective
What are characteristics in Ponifera? - ANSWERlack of true tissues
filter feed
What are characteristics in Cnidaria? - ANSWERradial, nemocysts, polyp vs
medusa, 1 opening
What are characteristics in Ctenophora? - ANSWER1st complete gut
, What are characteristics in Platyhelminthes? - ANSWERbilateral, eye spots and
beginnings of a brain
What are characteristics in Rotifera? - ANSWERcomplete tract, parthenogenesis
What are the 3 different type of tissues (ends in zoas)? - ANSWERmetazoa
parazoa
eumetazoa
Where are metazoa seen? - ANSWERin all animals
What are parazoa? - ANSWERwithout specialized tissues/organs
What are eumetazoa? - ANSWERmore than 1 type of tissue/organs
What are the two types of body symmetry? - ANSWERradial
bilateral
What are the two types of embryonic development? - ANSWERprotostoma
deuterstoma
What does the blastopore develop into in protostoma? - ANSWERmouth
What does the blastopore develop into in deuterstoma - ANSWERanus
What is the focused gene for molecular analysis? - ANSWERsmall subunit ribosomal
RNA
What are the two new invertebrate clades? - ANSWEREcdysozoa
Lophotrochozoa
What are some animals that are in Ecdysozoa and what does this clade mean? -
ANSWERnematodes and arthropods
molting
What are some animals and features in Lophotrochozoa? - ANSWERmollusks and
annelids
feeding tentacles
trochophore larva
What are characteristics in Bryozoa? - ANSWERlooks like plants
about 4,000 species
What are characteristics in Brachiopoda? - ANSWER2 shells
300 species
What are characteristics in Annelids? - ANSWERinternal fertilization, segmented
worms
& ANSWERS (RATED A+)
What are some commone characteristics of animals? - ANSWERmulticellular
heterotrophs
lack of cell walls
nervous tissue
sexual reproduction
Hox genes
What life cycle does all animal show? - ANSWERgametic
What are the likely ancestors of animals? - ANSWERchaonoflagellates protists
What are 3 major features to classify animals? - ANSWER1. presence or absense of
different tissue types
2. type of body symmetry
3. specific features of embryonic development
What are the 3 major groups of mammals? - ANSWERmonotremes
marsupials
eutherians
What is monotremes - ANSWERegg-laying
What are marsupials? - ANSWERpouched mammals with placenta
What are eutherians? - ANSWERcarried offspring to full-term
What are the hierarchy of organisms in animals? - ANSWERcells -> tissues ->
organs -> organ systems
What are the 4 types of tissues - ANSWERepithelial
muscle
nervous
connective
What are characteristics in Ponifera? - ANSWERlack of true tissues
filter feed
What are characteristics in Cnidaria? - ANSWERradial, nemocysts, polyp vs
medusa, 1 opening
What are characteristics in Ctenophora? - ANSWER1st complete gut
, What are characteristics in Platyhelminthes? - ANSWERbilateral, eye spots and
beginnings of a brain
What are characteristics in Rotifera? - ANSWERcomplete tract, parthenogenesis
What are the 3 different type of tissues (ends in zoas)? - ANSWERmetazoa
parazoa
eumetazoa
Where are metazoa seen? - ANSWERin all animals
What are parazoa? - ANSWERwithout specialized tissues/organs
What are eumetazoa? - ANSWERmore than 1 type of tissue/organs
What are the two types of body symmetry? - ANSWERradial
bilateral
What are the two types of embryonic development? - ANSWERprotostoma
deuterstoma
What does the blastopore develop into in protostoma? - ANSWERmouth
What does the blastopore develop into in deuterstoma - ANSWERanus
What is the focused gene for molecular analysis? - ANSWERsmall subunit ribosomal
RNA
What are the two new invertebrate clades? - ANSWEREcdysozoa
Lophotrochozoa
What are some animals that are in Ecdysozoa and what does this clade mean? -
ANSWERnematodes and arthropods
molting
What are some animals and features in Lophotrochozoa? - ANSWERmollusks and
annelids
feeding tentacles
trochophore larva
What are characteristics in Bryozoa? - ANSWERlooks like plants
about 4,000 species
What are characteristics in Brachiopoda? - ANSWER2 shells
300 species
What are characteristics in Annelids? - ANSWERinternal fertilization, segmented
worms
