Which of the following features are common to both moss leaves and true leaves?
A. vascular strands
B. chlorophyll a and b
C. all the cells are haploid
D. except at the midrib only one cell thick
E. stomata
B. chlorophyll a and b
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Which of the following is not associated with adhesive junctions?
A) desmosomes B) hemidesmosomes C) plaques D) connexin E) cadherins
In the testing of water for coliforms, the presumptive test involves detection of
A. sheen production on a selective medium. B. a gram-negative nonspore-forming rod. C. gas production in a lactose broth medium. D. All of these choices are correct.
Siberian tigers and grizzly bears became endangered for __________ reason(s);
____________________.
a. different; tigers encountered disease and bears were overhunted b. different; bears encountered disease and tigers were overhunted c. the same; both encountered disease d. the same; both were overhunted
Refer to Figure 36-2. Absorption of positively charged mineral ions by the root is facilitated by:
a. the movement of clay particles into the root hair.
b. the movement of water into the root hair.
c. the movement of protons into the root hair.
d. the movement of protons out of the root hair.
e. the movement of Mg+ out of the root hair.