Which best explains photomorphogenesis?
a. the normal developmental process activated when seedlings are exposed to heat
b. the normal developmental process activated when seedlings are exposed to light
c. the normal developmental process activated when seedlings are exposed to cold
d. the normal developmental process activated when seedlings are exposed to salinity
Ans: b. the normal developmental process activated when seedlings are exposed to light
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Which of the following statements regarding evolutionary relationships among land plants is correct? (Select all correct answer options.)
A. The ancestor of all land plants was a green alga. B. Bryophytes and vascular plants together form a monophyletic group. C. Vascular plants diverged more recently than bryophytes. D. Bryophytes form a monophyletic group. E. Vascular plants evolved from mosses.
Which of the following is true of plant cells?
A) Plant cells may contain chloroplasts. B) Plant cells are always much larger than animal cells. C) Chromosomes are found only in plant cells. D) Only plant cells have a cell membrane. E) The plant cell has no cell wall.
If a human gene mRNA were placed into a cell of yeast, it would be:
a. degraded immediately. b. translated into a repeating amino acid chain. c. translated into a chain of random amino acids not resembling the protein in humans. d. translated into the protein that is found in humans. e. integrated into the genome of the yeast.
Explain the relationship between body size and multicellularity. What will be an ideal response?