Which of the following types of plants are NOT represented in the phylum Pterophyta?
a. horsetails
b. mosses
c. whisk ferns
d. ferns
Ans: b. mosses
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Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?
I) Keystone predators have a marked effect on species diversity. II) Green plants produce the oxygen we breathe. III) The presence of land plants builds soil. IV) The presence of diverse wetlands helps in flood control. A) only I and III B) only II and IV C) only I, II, and IV D) only II, III, and IV E) only I, II, and III
The component in the highest concentration in plasma is __________
a. water b. plasma proteins c. erythrocytes d. leukocytes e. salts
A micronutrient can also be called
A) a trace element. B) a macronutrient. C) an elemental reservoir. D) a principal nutrient.
Which evidence for evolution uses impressions of plants and animals pressed into sedimentary rock?
A. fossil record B. biogeography C. comparative anatomy D. comparative embryology E. comparative biochemistry