Chameleon-Non-Avian Reptile Vodcast

1. The chameleons consistently matched the background more closely in response to birds than to snakes because.

a. snakes can smell better

b. chameleon’s natural predator is the bird

c. the bird’s vision can decipher colors and shades differently

d. the snake’s vision can perceive movement better than color



2. The dwarf chameleons had different behavioral responses to the bird and the snake.

a. True

b. False



3. The dwarf chameleon is classified as critically endangered and has a high risk of extinction in the wild.

a. True

b. False



4. When predators are nearby, the Smith’s Dwarf chameleon will try to look like:

a. A dead leaf

b. A flower

c. A fruit

d. A dwarf



Panda-Tetrapod Group 1

Set Auto play to 10 seconds

  1. Pandas reproduce at a much lower rate…
    1. When placed in captivity
    2. When faced with habitat destruction
    3. When sharing a habitat with other species
    4. Both a and b
    5. Both b and c
  2. Female pandas are “in heat” for what length of time?
    1. 2-4 weeks a year
    2. 12-14 days per year
    3. 2-4 days per year
    4. 12-14 weeks per year
  3. According to the study, pandas are at a “genetic dead end.”
    1. True
    2. False
  4. According to the study, approximately what proportion of the pandas’ ancestral habitat has been lost?
    1. 58%
    2. 63%
    3. 77%
    4. 85%
    5. 92%
  5. Which of the following was NOT given by the study as a reason for population decline?
    1. Introduction of foreign species
    2. Major expansions in ancient human civilizations
    3. Rapid development of agriculture
    4. Agricultural associated landscape events

Cookie-Cutter Shark-Fish Group 2

Play with 4 second autoplay

1) What is the function of the calcified cartilaginous skeleton for the cookiecutter shark?
for foraging in deeper water
2) What is the most frequent fish preyed on by the cookiecutter shark throughout the year?
3) What does the bite size of the cookiecutter shark suggest?
bite size corresponds to body size; males smaller than female
4) What does cookie-cutter shark uses to attract preys?

Northern Pike-Fish Group 1

Play with a 4 second autoplay

1) In the absence of larger prey options, what food source did northern pike optimize on?

Stomach content analysis showed pike specialization on leeches.


2) In Venturelli et al.’s experiment with Northern Pike, the removal of prey fish represents what natural event?

Removal of prey fish represents the effects of winterkill conditions.


3) How did a diet of invertivory affect northern pike growth?

Observed growth rate of adult northern pike in experimental lakes was low compared to reference lakes, suggesting that the sudden switch between food sources had a negative effect on growth and that leeches are not an ideal food source for adult leeches.


4) How did a leech-heavy diet affect juvenile pike?

Juvenile pike who eating leeches averaged larger in size than control and reference pike.


5) Although leeches are a higher energy food source than fish (calories per mg), why are they an unsuitable replacement in the northern pike diet?

Northern pike depending largely on a leech diet must spend much more time hunting and gathering food sources because prey are much smaller in size.


C. lupus-General Vertebrate Group 1


Wolves are vertebrates because:

  1. they are warm-blooded
  2. they have fur
  3. they have four legs
  4. they have a cranium that protects the brain
  5. none of the above


What was the focus of the study?

  1. increasing beaver population due to wolf reintroduction
  2. how wolves influence the diversity of ecosystems
  3. how wolves impact songbird dynamics
  4. how wolves affect micro content of soil
  5. sapling survival of willow trees


What was the ecosystem response to wolf extirpation at Yellowstone?

  1. significant increase in elk, in response to lack of predation
  2. decrease in ecosystem diversity
  3. decrease in beaver populations
  4. all of the above
  5. none of the above


What was the ecosystem response to wolf reintroduction at Yellowstone?

  1. increase in beaver colonies
  2. taller trees and plants
  3. decrease in elk
  4. overall, major increase in ecosystem diversity
  5. all of the above


Wolves are a keystone species at Yellowstone because:

  1. the ecosystem collapses without them
  2. they are a top predator
  3. they affect beaver populations
  4. they aren’t a keystone species
  5. they affect trees

When Sea Stars Attack-Echinoderm Group 2

Play with 4 second autoplay

1.     The Sea Star uses all these ways to defend themselves except?

a.     Toxins

b.     Pedicellariae

c.     Regeneration

d.     Extrude Internal Organs


2.     The Thorny Sea Star, Poraniopis inflatus, is one of the only species of sea stars to experience arm deflation, which is used for ?

a.     Reproduction

b.     Defense Mechanism

c.     Communication

d.     Locomotion


3.     The Sea Star belongs to what clade?

a.     Echinoidea

b.     Holothuroidea

c.     Asteroidea

d.     Crinoidea


4.     The body part pedicellariae on sea stars is used for defense and?

a.     Communication

b.     Capturing Food

c.     Locomotion

d.     Reproduction



Brittle Star-Echinoderm Group 1

Play with a 4 second delay

Q1: Where was the regeneration rate the greatest?

a) The distal end of the arm

b) The proximal end of the arm

c) The disc

d) There was no difference in regeneration rate

Q2:  Arm explants regenerated faster than whole-animal arms.

a) True

b) False

Q3: As arm length loss increases, regeneration rates ____?

a) Stay the same

b) Decrease exponentially

c) Increase exponentially

d) None of the above

Q4: The brittle star uses its arms for everything EXCEPT

a) Collection and transportation of food

b) Ventilation and Respiration

c) Transportation of sediments and wastes out of the burrow

d) Communication