Four of the five roles listed below are functions of
roots. Select the exception.
a. support
b. synthesis of food
c. absorption of water and minerals
d. conduction of water and solutes
e. anchorage
Answer: b
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What is the structure of a lymph capillary?
a. endothelial cells surrounded by collagen fibers b. endothelial cells surrounded by elastic fibers c. collagen fibers only d. elastic fibers only e. endothelial cells only
Which structure exerts primary control over the concentration of sugar in the blood?
A) liver B) pituitary C) pineal D) pancreas
Viruses are lifelike structures that have characteristics of living cells with the exception of _______________.
A. a requirement for a host cell for replication B. nucleic acid transcription C. nucleic acid to transmit viral characteristics D. structural proteins
Genotypic adaptive landscapes better represent true adaptive landscapes than pheno-typic adaptive landscapes because:
a. single mutations can have a large effect on the phenotype. b. phenotypic landscapes are hard to mathematically model. c. phenotypic landscapes do not account for drift. d. genotypic landscapes are easier to visualize. e. genotypic landscapes are smooth.