Which of the following is an example of a respiratory surface?
a. fish fins
b. human nose
c. reptilian skin
d. human lungs
Ans: d. human lungs
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The growth of a new plant on the margin of a leaf that eventually falls to the ground and grows
independently is an example of
a. fragmentation. b. protoplast fusion. c. somaclonal section. d. grafting. e. apomixis.
Which of the following statements about
digestion in ruminants is false? a. Ruminant animals have symbiotic bacteria to aid in the digestion of their food. b. Food materials are re-chewed. c. Chewing results in mechanically breaking down food and exposing more cellulose to digestive enzymes. d. Ruminants have a smaller range of foods in their diet than do humans. e. Pronghorn antelopes and other herbivores have a single but disproportionately large stomach.
Suppose that your diet does NOT contain any dark green vegetables, whole grains, yeast, or lean meats. Which vitamin might you be deficient in?
a. B1 b. folic acid c. B6 d. niacin
What thermoregulation process can be sustained for the longest period of time?
A. Fever B. Contraction of blood vessels in skin C. Shivering D. Sweating E. Hibernation