In flowering plants, pollen grains form in the
flower's male parts called
a. stamens.
b. anthers.
c. carpels.
d. megaspores.
e. endosperms
A
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Mammals evolved from which group in the late Triassic period?
a. diapsids b. pelycosaurs c. therapsids d. anapsids
what is the mode of action for quinolones and metronidazol?
What will be an ideal response?
"Sticky ends" are:a
the single-stranded ends of a DNA segment created by some restriction enzymes. b. a problem in recombinant DNA technology because they form loops of single-stranded DNA. c. double-stranded ends of a DNA segment created by some restriction enzymes. d. sites of the origin of replication in prokaryotes.
e. sugar molecules that are bound to the ends of a DNA fragment.Which of the following is mismatched?
A. endoskeleton - echinoderms B. hydraulic skeleton - earthworm C. exoskeleton - vertebrates D. exoskeleton - crustaceans E. hydraulic skeleton - jellyfish