BIO 100 SURVEY OF ANIMALS UPDATED QUESTIONS AND
ANSWERS
Define phylogeny - CORRECT ANSWER✅✅✅The evolutionary history of a taxonomic group of
organisms. It's the story of the steps in the evolution that led to a particular group of organisms.
Define taxonomy - CORRECT ANSWER✅✅✅The process of identifying genetic traits (called
characters) with the goal being to name and identify all creatures.
What are the 3 types of body plans found in Exercise 3? - CORRECT ANSWER✅✅✅A) No Symmetry
B) Radial Symmetry
C) Bilateral Symmetry
What is an incomplete gut? - CORRECT ANSWER✅✅✅A type of digestive system with a tube of only
one opening.
What is a complete gut? - CORRECT ANSWER✅✅✅A digestive system that consists of a tube
extending though the organism and there are two openings.
A segmented animal would be (smaller or larger) than the early "pre-segmented" animal form. -
CORRECT ANSWER✅✅✅Larger.
Name one organism that is a Mollusk: - CORRECT ANSWER✅✅✅Clams, snails.
Name one organism that is an Echinoderm: - CORRECT ANSWER✅✅✅Brittle stars, Starfish.
Differentiate between an exoskeleton and an endoskeleton. - CORRECT ANSWER✅✅✅Prefix of each
word, so Exo meaning outside and Endo meaning inside.
Name one organism that has a cartilaginous skeleton: - CORRECT ANSWER✅✅✅SHARKS!!
ANSWERS
Define phylogeny - CORRECT ANSWER✅✅✅The evolutionary history of a taxonomic group of
organisms. It's the story of the steps in the evolution that led to a particular group of organisms.
Define taxonomy - CORRECT ANSWER✅✅✅The process of identifying genetic traits (called
characters) with the goal being to name and identify all creatures.
What are the 3 types of body plans found in Exercise 3? - CORRECT ANSWER✅✅✅A) No Symmetry
B) Radial Symmetry
C) Bilateral Symmetry
What is an incomplete gut? - CORRECT ANSWER✅✅✅A type of digestive system with a tube of only
one opening.
What is a complete gut? - CORRECT ANSWER✅✅✅A digestive system that consists of a tube
extending though the organism and there are two openings.
A segmented animal would be (smaller or larger) than the early "pre-segmented" animal form. -
CORRECT ANSWER✅✅✅Larger.
Name one organism that is a Mollusk: - CORRECT ANSWER✅✅✅Clams, snails.
Name one organism that is an Echinoderm: - CORRECT ANSWER✅✅✅Brittle stars, Starfish.
Differentiate between an exoskeleton and an endoskeleton. - CORRECT ANSWER✅✅✅Prefix of each
word, so Exo meaning outside and Endo meaning inside.
Name one organism that has a cartilaginous skeleton: - CORRECT ANSWER✅✅✅SHARKS!!
