Which of the stages or structures in Figure 51-1 was formed by the process of gastrulation?
a. 1
b. f
c. g
d. 3
e. 5
E
Biology & Microbiology
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If two species of lizards do not mate because their mating rituals differ greatly, they are exhibiting ____ reproductive
isolation.
a. behavioral b. ecological c. gametic d. mechanical e. temporal
Biology & Microbiology
Why are flowering plants considered by many botanists to be the most successful land plants?
What will be an ideal response?
Biology & Microbiology
Which of the following explains the movement of nutrients into a plant's roots at the end of the growing season?
A. active transport B. pressure-flow system C. transpiration D. osmosis
Biology & Microbiology
Because the (ductus/urethra/ureter) is shorter in females than in males, it can be a portal of entry for pathogens
What will be an ideal response?
Biology & Microbiology