Auxins are secreted by
a. most tissues undergoing ripening.
b. apical meristems of shoots, coleoptiles, and
roots.
c. vascular tissues of stems and leaves.
d. root caps.
e. root cells in response to water stress.
Answer: b
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A) axonal; 9+2 B) motile; 9+0 C) motile; 9+2 D) sensory; 9+0 E) filopodial; 9+4
A testcross is a mating between an organism of unknown genotype and a homozygous recessive individual.
a. true b. false
This is a name for a group of conditions that make it difficult to breathe. This group of conditions is most commonly caused by smoking
A) influenza B) tuberculosis C) chronic obstructive pulmonary disease D) asthma
Hans Selye defined stress as
A. environmental factors that result in anxiety B. the physiological reaction of the body to environmental factors C. a negative emotion resulting from environmental unpleasantness D. the nonspecific response of the body to any demand made on it