Dependence on animal vectors for fertilization and dispersal is characteristic of many species of ____
a. ferns
b. angiosperms
c. mosses
d. conifer
e. cycads
ANSWER: b
You might also like to view...
A drug binds to the active site of an enzyme. If it is bound to the active site of the enzyme, it prevents substrate binding. This drug would be considered a
A. noncompetitive inhibitor. B. allosteric inhibitor. C. allosteric activator. D. competitive inhibitor.
The opening of the uterus that extends into the vagina. _____
A) Endometrium
B) Testis
C) Cervix
D) Uterus
E) Oviduct
F) Ovaries
G) Vagina
H) Seminal vesicle
I) Penis
J) Prostate gland
K) Vas deferens
L) Glans penis
Sometimes the immune system overreacts from exposure to a normally harmless substance such as cat hair. Subsequent exposure to this allergen elicits a massive inflammatory response
Because the chemical histamine is the cause of this inflammation, what cell type is most likely behind the problem? A) neutrophils B) basophils C) lymphocytes D) monocytes
Which of the following statements best explains why the waters over continental shelves have more nutrients than the open ocean?
A. Sunlight penetration is greater over continental shelves, making it more nutrient rich. B. The waters over continental shelves have more aquatic plants that provide nutrients. C. The open ocean has a greater concentration of consumers that deplete the water of nutrients. D. About 99% of seafood harvested by humans comes from the open ocean, thus depleting it of its nutrients. E. The water over the continental shelves are shallower so the nutrients remain in place.