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BIOL 1309 Exam 3 Questions With Complete Solutions
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BIOL 1309 Exam 3 Questions With Complete Solutions
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BIOL 1309 Exam 3 Questions With Complete Solutions# of subunits (nucleotides) in DNA. Why are we all different
Correct Answer 4: adenine, cytosine, thymine, guanine
differences in the sequence of the nucleotide make individual
different
greater differences --> different species
3 groups of mammals Correct Answer monotremes, placental
mammals, marsupials
4 different types of teeth found in mammals Correct Answer
incisors, canines, premolar, molar
5 challenges and threats that sex and its resulting genetic
variation can defend against Correct Answer virus, bacteria,
predator, parasites, competitive evolving species
A new group of arthropods, the insects, evolved with _______
pairs of legs and _______ for flying. Correct Answer 3, wings
Acanthostega forelimb bones Correct Answer humerus, radius
and ulna, wrist bones, phalanges
All of these are arthropods except Correct Answer snails
Allantois Correct Answer This part of the amniotic egg
disposes of metabolic wastes so the embryo does not die from its
own waste products
,Amnion Correct Answer This part of the amniotic egg
produces fluid that bathes the embryo in a pool of fluid. This
fluid cushions the embryo as it floats in the fluid
Anatomical changes in lizards found of Pod Mrcaru Correct
Answer bigger heads to allow stronger bites, legs had become
stronger and they became slower, digestive tract -> new
muscular rings that formed a new chamber--> plant feeding
worms to break down plants
Anomalocaris Correct Answer Large Cambrian animal is the
first-known large predator. Its body had a mouth with teeth, two
claws with spikes, armored plates along its sides, and a tail.
Archaeopteryx similar characteristics to birdsr Correct Answer
feathers along wing and tail
Archaeopteryx similar characteristics to reptiles: Correct
Answer teeth in jaw, claw in hand and long bony tails
Arthropleura Correct Answer Enormous millipede was the first
arthropod land. Fossils from the Carboniferous period show
track imprints of their feet
-increase in o2 allowed it to get so big
arthropods Correct Answer group of animals evolved hard
exoskeletons mae of chitin
Aysheia Correct Answer The Cambrian soft-bodied animal was
almost identical to the velvet words found in the tropics today
, Based on Jenny Clack's research, which came first: fish moving
onto land or fish developing forelimbs? Correct Answer
forelimbs first
Basic body plan of a trilobite.
What changes in this basic body plan allowed trilobites to
occupy different ecological niches? Correct Answer -bodies in
3 sections, head and tail
-molded exoskeletons into various shapes
behavior changes is Pod Mrcaru lizards Correct Answer lizards
stopped fighting with each other over territory
Besides humans, what other animals belong to this lineage
Correct Answer cats
Briefly describe the fish traits and the tetrapod traits of
Acanthostega Correct Answer fish-like tails, gills
-peddle shaped arms and fingers
Carboniferous plant fossils found in Crail, Scotland. What was
the Earth and its atmosphere at this time? Correct Answer grew
to 90 feet, rooted in sandy swamp
contents grouped together and forests were widespread
changes in mammals in regards to dentary Correct Answer
interlocking jaw, front-most bone, held many teeth, rear teeth
formed a hunge
changes in mammals in respect to middle ear bones Correct
Answer started out a jaw
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