Which plant hormone will cause the stomata to close?
a. Ethylene
b. Auxins
c. Cytokinins
d. Abscisic acid
e. Gibberellins
d
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Produces parenchyma, collenchyma, and sclerenchyma cells.
Choose the letter of the best match: A. protoderm B. vascular cambium C. apical meristem D. procambium E. ground meristem
Which of the following does not inhibit protein synthesis?
A. Tetracycline B. Erythromycin C. Streptomycin D. Penicillin E. All of the choices inhibit protein synthesis.
Why do the Galápagos Islands and the Hawaiian Islands have so many endemic species of flies and birds? Check all that apply.
A. There are numerous islands in each archipelago. B. Each bird or fly species has many common ancestors. C. There is adequate distance between islands to allow divergence. D. The founder effect was common when islands were colonized.
In thinking about their role in cell division, oncogenes are like the ________ of a car, while tumor-suppressor genes are like the ________ of a car
A) gas pedal; brakes B) steering wheel; brakes C) gas pedal; headlights D) brakes; gas pedal