Which of the following characteristics is not shared by typical birds and mammals?
a. four-chambered heart
b. milk production
c. four limbs
d. endothermy
e. insulating skin structures
B; Milk production is unique to, and characteristic of, mammals. There are some pigeons that produce "crop milk," but this is a secretion unrelated to true milk. All of the other traits are shared, although the limb form (choice c) is quite different, as is the insulating material, feathers versus fur (choice e).
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The pancreas produces hormones that regulate
___ homeostasis.
a. water b. temperature c. pH d. glucose e. several types of
The most important factor that regulates breathing activity is the ____
a. amount of oxygen in the blood b. amount of carbon dioxide in the blood c. amount of oxygen in the air we breath d. the acidity of the blood e. chemoreceptors in the blood
How would you describe the body of a fungus?
A. tiny threadlike mycelia collectively make up the hypha B. tiny threadlike mycelia collectively make up the septa C. tiny threadlike hyphae collectively make up the mycelium D. tiny threadlike septa collectively make up the mycelium E. tiny threadlike mycelia collectively make up the dikaryote
T or F: There are seven types of diarthrodial joints
What will be an ideal response?