Ergot is a fungus that often grows on
a. cow dung.
b. fruits.
c. grains.
d. water
C
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The carbon cycle revolves around
A. nitrogen. B. water. C. phosphorus. D. carbon dioxide.
What enzyme is responsible for unwinding the DNA during replication?
a. DNA polymerase b. DNA ligase c. helicase d. primase
The results in Figure 18-3 support the conclusion that:
a. natural selection does not occur in guppies.
b. natural selection can occur in guppies within a few generations.
c. predation is not a selective force in determining the average size of guppies.
d. male body weight increased proportionately more than female body weight.
e. in the experimental setting, the guppies produced fewer, larger offspring
Which of the following spores are produced within a sac?
A. blastospores B. zygospores C. chlamydospores D. sporangiospores E. arthrospores