A common resident of the rhizosphere that can enhance plant growth is ________.
A. Sphingomonas
B. Azotobacter
C. Erwinia
D. Pseudomonas
Answer: B
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Allelopathy is
A. an obligate mutualism between a plant and its pollinator. B. an example of asymmetric competition between plant species. C. the transmission of viruses from ticks to their primary hosts. D. the movement of genes from one species to another.
The rate of diffusion is affected by the permeability of the membrane to the diffusing solute
a. True b. False
Many people, when they have a sinus headache, often use decongestant nasal sprays. Why are such sprays useful?
A) They reduce swelling, allowing the sinuses to drain. B) They reduce the symptoms of sore throat inflammation, which exacerbates the pain. C) They dry out the breathing passageways in the pharynx, making it easier to breathe. D) They have a pain-blocking effect in the brain.
Which of the following are NOT energy reserves?
A) carboxysomes B) polysaccharide granules C) lipid inclusions D) ribosomes E) metachromatic granules