Show:
Animals
Swine Time
Bio Geo
Pigging Out
Getting Piggy With It
100
Which phyla has cnidocytes as a synapomorphy?
Cnidaria
100
What is the function of the spleen?
Recycling of RBC
100
How might the arrival of new species to an area affect the populations of species in that area?
The new species will be in competition with existing species, may feed on other species, etc.
100
Which heart chamber is the most muscled, and why?
Left ventricle, has to pump to all of the body
100
What is the name of the membranous sac surrounding the heart.
Pericardium
200
What synapomorphy separates the rest of the animals from the Porifera?
Presence of true tissues
200
Your pigs have a structure homologous to our appendix, but functions in housing bacteria involved in digestion. Name the structure.
Caecum or cecum
200
When is an island not an island?
Island can refer to any time there is a habitable area surrounded by uninhabitable area.
200
The fetal circulatory system shunts blood between the atria to bypass the developing lungs. What is the name of the opening between the atria?
Foramen ovale
200
During your dissection, you found a bunch of glands in the neck of your pig. How would you determine which is the thyroid and which is the thymus?
Thyroid is central, reddish, thymus is paired, butterfly like.
300
What Phylum, Class and Order is this animal from? http://waynesword.palomar.edu/images2/nicrophor1d.jpg
Arthropoda, Hexapoda (Insecta), Coleoptera (Beetles)
300
What is the identity and function of sheet of muscle between the thoracic and abdominal cavities?
Diaphragm, important in breathing
300
What are the two main factors in determining species diversity on an island?
Distance from the mainland (or other source islands) and size of the island
300
What is the pathway of deoxygenated blood returning via the posterior vena cava, and what color is it?
Right atrium, right ventrical, pulmonary trunk/artery to the lungs Deep red
300
What good is a kidney?
Filters blood, helps in elimination and concentration of nitrogenous waste and other blood filtrate
400
What characterizes a deuterostome?
Blastopore forms the anus first (doody)
400
You are handed a pig for dissection and asked to determine sex before making any cuts, your pig is quite young, and you are unable to detect the presence of a scrotal sac, but aren't sure if it is because it is too young or not a male.
Location of urogential opening
400
Even in a region of IDENTICAL habitat, increasing the area of sample plots would increase the number of species found. What would the reasoning be for this?
Increasing plot area would increase the chance of 'capturing' rare or uncommon individuals.
400
Which artery brings blood to the brain?
Internal carotid
400
What is the name of the vessel that carries sperm away from the testes?
Vas deferens
500
How might one distinguish between the 'worms' of different phyla?
Coelem type, segmentation, cuticle, digestive openings...
500
Insects have hollow tubes ringed in chitin that allow for gas exchange. Similar to what structure in your pig, they have rings (made of chitin in the insect) that help prevent the collapse of the tube. What is the evolutionary link between the two structures? http://www.biology-resources.com/images/spiracle-big.jpg
Trachea. Result of convergent evolution (not from a common ancestor)
500
A student's calculations were way off for species per area, and he suspects that the value of z was wrong. What is the most likely cause for him having an incorrect z?
Didn't calculate it using log-log.
500
How does the branching of the right and left subclavian arteries differ?
Right branches off brachiocephalic, left branches off aortic arch.
500
What Phylum is your pig from?
Chordata