Indoleacetic acid (IAA) is the most commonly occurring form of which of the following plant hormones?
A. abscisic acid
B. gibberellin
C. cytokinin
D. auxin
E. ethylene
Answer: D
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Determining the susceptibility of a microorganism to specific chemotherapeutic agents is an important service performed in the clinical microbiology laboratory.
Answer the following statement true (T) or false (F)
According to modern phylogeny, based on such data as the arrangement of genes in mitochondrial
DNA and the sequences of ribosomal RNA genes, hexapods are most closely related to which of the following groups?
a. trilobites b. myriapods c. crustaceans d. annelids e. chelicerates
Motility may involve
A) movement of a cell/organism through its environment. B) movement of the environment past a cell. C) movement of components within a cell. D) shortening of a cell. E) All of the above are correct.
A swim bladder is a gas-filled sac that helps fish maintain buoyancy. The evolution of the swim bladder from lungs of an ancestral fish is an example of _____
A) exaptation B) changes in Hox gene expression C) paedomorphosis D) adaptive radiation