A short-day plant will flower only when _____

A) days are shorter than nights
B) days are shorter than a certain critical value
C) nights are shorter than days
D) days and nights are of equal length


Answer: B

Biology & Microbiology

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Charcot-Leyden crystals are often observed in specimens infected with which one of the following trematodes?

a. Clonorchis (Opisthorchis) sinensis b. Opisthorchis viverrini c. Fasciola hepatica d. Paragonimus westermani

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The area labeled “A” is

a. a nucleus. b. chromatin. c. endoplasmic reticulum. d. a vacuole. e. a nucleolus.

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The disinfectant of choice for municipal water supplies is ________.

A. chlorine B. ultraviolet light C. fluorine D. either fluorine or chlorine

Biology & Microbiology