Similar orders are placed in the same class
__________________ Indicate whether the statement is true or false.
True
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Rods are
A. concentrated in the fovea. B. sensitive mainly to blue, green, or red light in humans. C. the only photoreceptors which contain opsins. D. the only photoreceptors which contain rhodopsin. E. concentrated in the fovea and sensitive to colors.
What type of organisms can generate organic molecules and obtain energy from inorganic molecules like iron, sulfur, and hydrogen?
a. chemoautotrophs b. photoautotrophs c. heterotrophs d. homotrophs e. organotrophs
Anaphylactic shock ________
A) occurs when blood vessels constrict abruptly B) is a symptom of an immunodeficiency disease C) causes blood pressure to drop dangerously D) has no treatment
A complete lack of vascular tissue is characteristic of
A) cycads. B) ferns. C) mosses. D) angiosperms. E) ginkgos.