Which of the following triggers flowering for plants sensitive to photoperiod?

A) temperature
B) night length
C) day length
D) intensity of sunlight


B

Biology & Microbiology

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Darwin's book in which he described his views on evolution is:

A. Principles of Geology. B. Survival of the Fittest. C. On the Origin of Species. D. On the Principle of Population.

Biology & Microbiology

Genes that are exchanged between prokaryotes

are contained in

a. pili. b. plasmids. c. prokaryote RNA. d. the nucleus. e. capsules

Biology & Microbiology

In fermentation, 

A. hydrogen combines with pyruvic acid. B. pyruvic acid is changed to an amino acid. C. sugar is changed to acetyl. D. pyruvic acid is converted to hydrogen.

Biology & Microbiology

____ is an adrenal hormone that makes kidney tubules more permeable to sodium and encourages sodium reabsorption, thus increasing water reabsorption and concentrating the urine.

A. ADH B. ANP C. Angiotensinogen D. Aldosterone E. AMP

Biology & Microbiology