Which type of epithelium functions in diffusion?
a. simple squamous epithelium
b. stratified squamous epithelium
c. cuboidal epithelium
d. simple columnar epithelium
e. simple pseudostratified columnar epithelium
ANSWER: a
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Figure 53-4 is representative of:
a. exponential growth.
b. iteroparity.
c. Type I survivorship.
d. Type III survivorship.
e. Type II survivorship.
The ascending limb of the loop of Henle
A. removes solutes from the filtrate. B. is permeable to sodium ions. C. is not permeable to water. D. produces hypoosmotic filtrate. E. has all of these properties.
A water-vascular system is characteristic of the phylum ____.
A. Nematoda B. Annelida C. Chordata D. Mollusca E. Echinodermata
Why would most plants produce large numbers of seeds?
a. Most seeds are not viable. b. Most of a plants seeds are produced as food for animals that disperse the seed. c. Most plants have many flowers. d. Most plants only flower once e. Few seeds survive, germinate and grow into mature individuals.