The seed coat of a pine seed
a. is derived from the integuments.
b. is produced by the micropyle.
c. surrounds the male gametophyte.
d. is divided into the hypocotyl-root axis and epicotyl.
a
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Which of the following organisms is a predatory myriapod with modified front legs that inject venom?
a. centipede b. spider c. bed bug d. millipede
The male reproductive whorl of a flower typically consists of one or more
a. petals. b. carpels. c. stamens. d. receptacles. e. sepals.
One hypothesis holds that complex organic compounds formed near deep-sea
a. silt mounds. b. hydrothermal vents. c. caverns. d. crevices. e. rock outcrops.
Based on their experiment with T2 bacteriophages, Hershey and Chase concluded that
A. virulent bacteria can transform nonvirulent bacteria. B. DNA replication is semiconservative. C. A always pairs with T and G always pairs with C. D. DNA functions as the genetic material. E. the phage coat contains the genetic material.