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College Zoology Questions

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College Zoology
Several lineages of fishes, including lamnid sharks, billfishes and tunas, have evolved an ability known as regional endothermy. These fishes all share the following eco-morphological characteristics, EXCEPT for what?
  1. They are large and active with high energy demands.
  2. They undertake long-distance migrations.
  3. They encounter a range of water temperatures within the vertical water column.
  4. They have a second set of accessory gills that increases oxygen extraction from water.
College Zoology

What are the two features of this omnivore skull that are diagnostic of an animal tissue-based diet?
  1. large canines
  2. long incisors
  3. well-developed molars
  4. premolars modified as carnassials
College Zoology

Which animal pictured here is a specialist (in regards to diet)?
  1. black-capped chickadee
  2. honey bee
  3. blue crab
  4. gray squirrel
College Zoology
All of the following accurately describe the spiral valve found in amphibian hearts, EXCEPT for what?
  1. It sorts blood into the correct circuit according to oxygen levels.
  2. It extracts oxygen from blood for use by the cardiomyocytes (cells of the heart).
  3. It allows blood flow to the skin during cycles of intermittent breathing.
  4. It diverts blood flow away from the lungs during submergence.
College Zoology
All of the following are examples of differences between animals with open, closed, or no circulatory systems, EXCEPT for what?
  1. animals with open circulatory systems, or no circulatory systems, use hemolymph instead of blood as their circulatory fluid
  2. all vertebrates have a closed circulatory system
  3. animals with a tracheal system for delivering oxygen to cells are not coupled with a circulatory system
  4. animals with no circulatory system use a gastrovascular cavity for the distribution of oxygen to cells
College Zoology
Organisms categorized as osmo-conformers are most likely                                             .
  1. marine
  2. found in freshwater lakes and streams
  3. found in arid (dry) terrestrial environments
  4. amphibious
College Zoology
In animals, nitrogenous wastes are produced mostly from the catabolism of                              .
  1. fatty acids and glycerol
  2. proteins and nucleic acids
  3. starch and cellulose
  4. phospholipids and glycolipids
College Zoology
The gastrovascular cavity differs from the alimentary canal in that the gastrovascular cavity                                                               .
  1. absorbs food molecules but does not produce hydrolytic enzymes
  2. stores food but does not digest it
  3. functions in digestion but not absorption
  4. has only a single opening
College Zoology
Which of these statements about tetrapod blood vessels is correct?
  1. Arteries carry blood toward the atria of the heart.
  2. The pulmonary artery carries oxygen-rich blood from the lungs to the heart.
  3. Pulmonary veins carry oxygen-rich blood from the lungs to the heart.
  4. Arteries carry oxygenated blood; veins carry oxygen-poor blood.
College Zoology
Which of the following statements regarding the adult mammalian heart is correct?
  1. When the right atrium contracts, it forces blood into the left atrium.
  2. Blood in the right chambers of the heart cannot enter the left chambers without passing through the lungs.
  3. Blood is pumped from the heart via the atria.
  4. Blood arrives at the heart via the ventricles.
College Zoology
Why do sponges, cnidarians, and flatworms lack a specialized gas-exchange surface?
  1. Nearly all of their cells are in direct contact with the external environment.
  2. Countercurrent exchange mechanisms cannot function well in their living conditions.
  3. They do not produce carbon dioxide.
  4. They are too large for a circulatory system to operate well.
College Zoology
Air-breathing insects carry out gas exchange                                                              .
  1. in their specialized internal gills.
  2. across all parts of their thin exoskeleton.
  3. across the finest branches of the trachea and cell membranes.
  4. in the alveoli of their lungs.
College Zoology
College Zoology
Most carbon dioxide is carried from the body tissues to the lungs                             .
  1. as bicarbonate ions (HCO3 -)
  2. combined with hemoglobin
  3. as hydrogen ions (H+)
  4. dissolved in blood plasma
College Zoology
Hemoglobin in mammals, and hemocyanin in arthropods and molluscs                                         .
  1. are both found within blood cells.
  2. are both freely dissolved in the plasma.
  3. both transport oxygen.
  4. are both red in color.
College Zoology
One feature that amphibians and humans have in common is                                                  .
  1. a complete separation of circuits for circulation
  2. the number of heart chambers
  3. a low blood pressure in the systemic circuit
  4. the number of circuits for circulation
College Zoology
Circulatory systems compensate for what?
  1. The problem of communication between the nervous system and respiratory system.
  2. The slow rate at which diffusion occurs over large distances.
  3. Temperature differences between the lungs and the active tissue.
  4. The need endothermic organisms have for maintaining an optimal body temperature.
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