Final Exam Review

Question 1

batesian mimicry

Answer 1

members of a palatable species gain protection from predation by resembling the defensive signaling of a unpalatable species

Question 2

mullerian mimicry

Answer 2

two or more species with effective defense share similar appearance or signaling

Question 3

fundamental niche

Answer 3

the niche that could be occupied without competition

Question 4

obligate mutualism

Answer 4

symbionts that are completely dependent on each other for survival

Question 5

dendrites

Answer 5

the structure of the neuron that receives signals from external stimuli

Question 6

role of the oligodendrocytes in the nervous system

Answer 6

form myelin in the CNS

Question 7

when threshold potential is reached:

Answer 7

voltage-gated Na+ channels open

Question 8

what occurs at a chemical synapses

Answer 8

neurotransmitter is released to post-synaptic cell

Question 9

what is the signal pathway for a reflex arc

Answer 9

PNS (sensory), CNS (spinal cord), PNS (motor)

Question 10

behaviors that do not require learning and do not vary across the same species are known as

Answer 10

Innate

Question 10

charles lyell’s influence on darwin was

Answer 10

showed him that the earth was much older than what he had though

Question 11

what violates the Hardy-Weinberg principle

Answer 11

no non-random mating, small population

Question 12

which type of selection selects agaisnt the extremes for the mean of the population

Answer 12

stabilizing selection

Question 13

when one species splits and diverges into two different species

Answer 13

cladogenesis

Question 14

speciation that occurs due to geographic isolation is

Answer 14

allopatric speciation

Question 15

speciation that occurs due to sexual selection

Answer 15

sympatric speciation

Question 16

which era did hominids first appear

Answer 16

cenozoic

Question 17

which geologic era is the age of dinosaurs

Answer 17

mesozoic

Question 18

the fimbriae on bacterial cells do what

Answer 18

help bacteria adhere to surfaces

Question 19

ways that bacteria can increase genetic variation

Answer 19

conjunction, translocation, horizontal gene transfer

Question 20

sporophytes main stage is

Answer 20

diploid

Question 21

dominant stage of bryophytes

Answer 21

gametophyte

Question 22

the gametophyte stage is

Answer 22

haploid

Question 23

function of the xylem

Answer 23

transport water and minerals from roots to stems and leaves

Question 24

the CNS is made up of

Answer 24

brain and spinal cord

Question 25

efferent neurons send information

Answer 25

away from the CNS motor neurons

Question 26

one of the roles of astroglia in the nervous system is to

Answer 26

form the blood brain barrier

Question 27

the strength of the stimulus is determined by

Answer 27

the frequency of action potential

Question 28

sensory detectors that detect sound are called

Answer 28

mechanoreceptors

Question 29

the largest most successful phylum in the animal kingdom

Answer 29

Arthropoda

Question 30

the sensory pathway is

Answer 30

stimulus, transduction, transmission, perception