Stomata
a. are found in the root cells.
b. may be found scattered anywhere
throughout the plant.
c. allow the movement of gases into and out
of plants.
d. prevent the loss of water from plants.
e. remain open at all times
C
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In meiosis, sister chromatids separate and move to opposite poles of the spindle during ____________________
Fill in the blank(s) with correct word
Muscles originate from the ____
a. ectoderm only b. endoderm only c. mesoderm only d. ectoderm and endoderm e. ectoderm and mesoderm
Symptoms of phenylketonuria (PKU) may be
minimized or suppressed by a diet low in a. serine. b. glycine. c. phenylalanine. d. proline. e. glutamic acid.
Which important finding from the fossil record supports the theory of evolution?
a. Life has evolved over time. b. All life evolved in the ocean. c. Most species are actually extinct. d. There is an inaccuracy in the fossil record. e. Ancient species greatly differed from those alive today.