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EXAM 3 FOR BIOL 1104 QUESTIONS WITH COMPLETE SOLUTIONS
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EXAM 3 FOR BIOL 1104 QUESTIONS WITH COMPLETE SOLUTIONS
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EXAM 3 FOR BIOL 1104 QUESTIONS WITHCOMPLETE SOLUTIONS
1) What are examples of adaptations that INCREASE positive
interaction effects? Correct Answer Speed/agility, claws,
camouflage, bill size, flower color/size,
7. What is the definition of a KEYSTONE species? Give two
examples. Correct Answer a species whose impact on the
community is much larger than expected based on biomass or
abundance
8. Why do disturbances (e.g. floods, fires, tornados) play an
important or potentially beneficial role in ecological
communities? Correct Answer for the maintenance of
biodiversity, as different species are dominant for each stage of
succession
9. What is ecological succession? Correct Answer
Be able to define/give examples of commensalism Correct
Answer - Commensalism is an interaction in which one species
benefits and the other species is not particularly affected
Be able to define/give examples of competition Correct Answer
- Competition is an interaction between two species both
attempting to use the same resource, when the resources is in
limited supply. Thus, bboth species are hurt by the interaction
(-/-)
,Be able to define/give examples of mutualism Correct Answer
- Mutualism is an interaction that benefits both species.
Mutualisms involve the exchange of two different types of
goods and services (+/+)
Be able to define/give examples of parasitism Correct Answer -
Parasites eat or live on their hosts, but do not always kill the host
Be able to define/give examples of predation Correct Answer -
Predation kills and eat the prey species
birds are most closley related to which traditional reptile?
Correct Answer crocodile
Describe how the 3 chambered hearts of reptiles and amphibians
differ from those of fishes. What benefit does the septum found
in the heart of most reptiles provide? Correct Answer Similar
to amphibians but have a partial septum that partially divides the
ventricle to reduce mixing of deoxygenated and oxygenated
blood
Describe the respiratory/circulatory system of a fish-
-How do they obtain oxygen?
-How many chambers do their hearts have?
Outline the path of blood flow starting from heart, back to the
heart. Correct Answer - They breathe with gills: Oxygen rich
water pulled in through mouth and pumped over the gills.
Oxygen diffuses from water into blood stream
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
, Describe why a 4 chambered heart is more efficient than a 3
chambered heart Correct Answer prevents deoxygenated and
oxygenated blood from mixing
Exponential growth occurs in populations when resources are __
Correct Answer unlimited
Fish is an incredibly diverse group of vertebrates. Name a
feature that all fish have in common that isnt one of the 4 key
chordate traits Correct Answer aquatic lifestyle, gills
Fishes are a super diverse group of organisms, made up of
several different classes. What characteristics do all fish have in
common Correct Answer - all have gills
- all are aquatic
- all have heads with skulls "craniates"
from what preexisting structures did shark teeth evolve? Correct
Answer dermal denticles/placoid scales
Give the classification of mammals from Domain to class
Correct Answer
Give the full classifications (domain, kingdom, phylum) of class
amphibian? Correct Answer Domain: Animalia
Kingdom:
Phylum: Chordata
Class: Amphibia
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