The upper layer of warm, less dense water is referred to as the
A) thermocline.
B) hypolimnion.
C) epilimnion.
D) benthic zone.
C
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The filtration step in the formation of urine for animals sorts materials only by
A. overall size with cells and proteins usually being kept out of the filtrate. B. whether they are charged or not. C. whether the substance in question is a waste product or not. D. whether they contain nitrogen or not. E. the hydration state of the body.
What ratios of these three tetrads would you expect to see if two genes are linked? Why is each type of tetrad more or less common? What ratios would you expect to see if the two genes are unlinked? Why?
What will be an ideal response?
The type of cell labeled 5 in Figure 43-5 is:
a. an amacrine cell.
b. a bipolar cell.
c. a ganglion cell.
d. a cone.
e. a horizontal cell.
Which part of the seed produces hydrolytic enzymes that break down the starchy endosperm during seed germination?
A. Amyloplasts B. Coleorhiza C. Aleurone layer D. Scutellum E. Plumule