__________ is the evaporation of water from plant parts, mainly at stomata, into air. Fill in the blank(s) with the appropriate word(s)
Transpiration
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The cardiac conduction system consists of
a. the sinoatrial node. b. the atrioventricular node. c. junctional fibers. d. a branching bundle of fibers. e. all of these.
One advantage that enabled the seed plants to greatly surpass the ferns in colonizing the land was the evolution of
A) spores. B) photosynthesis. C) sex without swimming sperm. D) a fibrous root system. E) a woody stem.
Caenorhabditis elegans is extremely useful as an experimental model system due to all of the following EXCEPT ________
A) adults contain a small, fixed number of cells B) it is highly variable in size and shape making it good for evo-devo studies C) its genetics are well known D) its genome has been sequenced
A ________ is a polysaccharide layer that lies outside the cell wall and is not easily removed.
Fill in the blank(s) with the appropriate word(s).