WSU Biology 106 Exam 3 Questions With 100% Verified Answers.
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Course
WSU Biology 106
Institution
WSU Biology 106
WSU Biology 106 Exam 3 Questions With
100% Verified Answers.
What role do each of the components of natural selection play in pushing populations toward
becoming better adapted for the environment in which they live? (mutation, heritable variation,
selective pressures, reproduction) - answer-le...
WSU Biology 106 Exam 3 Questions With
100% Verified Answers.
What role do each of the components of natural selection play in pushing populations toward
becoming better adapted for the environment in which they live? (mutation, heritable variation,
selective pressures, reproduction) - answer✔-leads to evolutionary change when individuals with
certain characteristics have a greater survival or reproductive rate than other individuals in a
population
-pass on these inheritable genetic characteristics to their offspring
What are the two major misconceptions about natural selection discussed in this lab? -
answer✔First:
populations do not change because they "need" to or because its a good idea
Second:
individuals don't adapt themselves
What is an animal? - answer✔-a living organism that feeds on organic matter
-typically having specialized sense organs
-nervous system and able to respond rapidly to stimuli
-body symmetry, number of tissue layers, body cavity and embryonic development
Which animals rely on filter feeding? - answer✔-Choanocytes
What two traits allowed the arthropods to diversify so much? - answer✔-segmented body
-jointed appendages
Give some examples of tagma in arthropods - answer✔The appendages can be used for:
-feeding
-locomotion
-defense
Molting - answer✔Process in which an arthropod sheds its exoskeleton and manufactures a
larger one to take its place
What are the major groups of arthropods? - answer✔-Chelicerata
-Crustacea
-Insecta
Describe complete vs. incomplete metamorphosis (insects) - answer✔Complete: is where the
larvae look different than the adults
Incomplete: means the larvae look just like the adults
The echinoderms exhibit pentaradial body plans, so why are they included in the Bilateral
animals (the "Bilateria")? - answer✔Because their larvae exhibit bilateral symmetry
What are the three subgroups of Chordata (both scientific and common names for two)? -
answer✔-Urochordates (Sea Squirts)
-Cephalochordates (Lancelets)
-Vertebrates
Which are the "invertebrate" chordates? - answer✔-Urochordates
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