Prin Of Bio 2 - Test 1 UPDATED ACTUAL Exam Questions and CORRECT Answers

Prin Of Bio 2 - Test 1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
invertebrate - CORRECT ANSWER - animal without a backbone



vertebrate - CORRECT ANSWER - animal with a backbone



animals - CORRECT ANSWER - -multicellular
-heterotrophic
-movement
-diploid
-sexual reproduction
-embryonic development


diploid - CORRECT ANSWER - full set of chromosomes



levels of organization - CORRECT ANSWER - cellular, tissue, organ



cellular level - CORRECT ANSWER - no true tissues (ex: sponges)



tissue level - CORRECT ANSWER - form tissues. has ectoderm and endoderm (ex:
cnidarians)


organ level - CORRECT ANSWER - ectoderm, endoderm, mesoderm



ectoderm - CORRECT ANSWER - outermost layer; gives rise to skin and nervous tissue

, endoderm - CORRECT ANSWER - inner most layer; becomes lining for digestive and
respiratory tracts


mesoderm - CORRECT ANSWER - middle layer; gives rise to muscle, connective tissue,
and circulatory system


asymetrical - CORRECT ANSWER - lacks symmetry (sponges)



radial symmetry - CORRECT ANSWER - body plan in which body parts repeat around
the center of the body (cnidarians)


bilateral symmetry - CORRECT ANSWER - Body plan in which only a single, imaginary
line can divide the body into two equal halves (flat worms)


incomplete digestive system - CORRECT ANSWER - only one opening for food and
waste. sac plan


complete digestive plan - CORRECT ANSWER - 2 openings for the mouth and anus. tube
within the tube plan


protostome development - CORRECT ANSWER - first opening becomes mouth and
second becomes anus


deuterostomes - CORRECT ANSWER - first opening becomes anus and second becomes
mouth


coelom - CORRECT ANSWER - gut cavity



acoelomates - CORRECT ANSWER - lack a gut cavity (round worms)