The formation of sieve plates between phloem sieve-tube elements allows
A) mesophyll cells to connect with xylem cells.
B) adjacent cells to connect via membrane-lined pores.
C) each cell to function independently.
D) water to transpire from each surface.
E) the dead phloem cells to form an empty tube.
B
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Food is usually contaminated by which of the following sources?
a. aerosols b. mechanical vector c. soil d. handler e. biological vector
Endocrine glands produce
a. enzymes. b. oils. c. waxes. d. hormones. e. milk.
The use of ASOs in the process of in vitro fertilization to determine the genetic risk factors present is called ________
A) RFLP analysis B) genome scanning C) preimplantation genetic diagnosis D) next-generation sequencing
Which of the following is not considered an accessory organ of the digestive system?
A. gallbladder B. small intestine C. pancreas D. salivary glands E. liver