A house plant that has been placed in the
window will grow toward the source of light
because auxin
a. becomes more concentrated on the
illuminated side of the plant.
b. becomes less concentrated on the
illuminated side of the plant.
c. becomes more concentrated in the roots of
the plant.
d. inhibits the growth of cells on the shady
side, so the cells on the sunny side grow
faster.
e. is produced only when the sun shines
B
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A __________ (fungus-root) is a symbiotic
interaction between a fungus and a plant. Fill in the blank(s) with the appropriate word(s).
In primary endosymbiosis, an ancient eukaryotic cell engulfed a(n) ____, which survived and evolved into a
chloroplast. a. algae b. virus c. ciliate d. euglenoid e. cyanobacterium
A baby born without a thymus:a
would not have an antibody mediated immune response. b. would not produce lymphocytes. c. would not produce immunocompetent T cells. d. will lack the ability to mount an immune response. e. will lack antigen presenting cells.
Fungal infections are studied by
A) virologists. B) bacteriologists. C) parasitologists. D) mycologists. E) herpetologists.