Why are gymnosperms no longer restricted to moist environments, as are ferns and mosses?
A) Because they have a new adaptation, seeds, that allow gametes independence from water
B) Because they have a new adaptation, cones, that group gametes together
C) Because they have a new adaptation, vascular tissues, that allow for the transport of water
D) Because they have a new adaptation, lignin, that allows better transportation of water
A
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In flowering plants an ovary is part of a(n)
a. corolla. b. ovule. c. calyx. d. stamen. e. carpel.
Which part of the brain is especially important in emotions?
a. Broca's area b. the hippocampus c. the amygdala d. the thalamus e. both b and c
Over 99% of the water filtered through the glomerulus is reabsorbed. At which one of the following locations does most of this water reabsorption occur?
A) loop of Henle B) distal tubule C) collecting duct D) proximal tubule E) renal pelvis
Figure 21.17
?
Refer to the accompanying figure for questions 22 and 23.
At which stage does the Plasmodium (malaria) parasite reproduce asexually and mature into merozoites?
A. A B. B C. C D. D E. E