Many flowers exude a sweet fluid called __________ that is prized by many pollinators.
Fill in the blank(s) with the appropriate word(s).
nectar
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The bulk of the reabsorption of useful materials by the kidney takes place in the
A. renal corpuscle. B. proximal convoluted tubule. C. loop of Henle. D. distal convoluted tubule. E. collecting ducts.
Which are structures formed from the neural crest? (Check all that apply.)
_____ a gill chamber of primitive chordates _____ blastopores _____ sensory neurons of the dorsal root ganglia _____ Schwann cells _____ olfactory and hearing organs
The cerebral hemispheres communicate with each
other by means of the a. cerebral cortex. b. corpora cardiaca. c. corporothalamus. d. corpus callosum. e. centrosome.
The equivalent in figure 2 of letter “D” in figure 1 is
indicated by a. E. b. F. c. G. d. H. e. all of these.