If you were given a large showy flower with three petals, six stamens, and three carpels, would you consider it likely to be
A. a monocot.
B. a hybrid.
C. a eudicot.
D. a gymnosperm.
E. Amborella trichopoda.
Answer: A
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In simple diffusion,
a. the rate of movement of molecules is influenced by temperature and pressure. b. the movement of individual molecules is random. c. the movement of molecules of one substance is independent of the movement of any other substance. d. the net movement is away from the region of highest concentration. e. all of these happen.
The central nervous system is composed of which of the following?
A) brain and spinal cord B) autonomic nervous system and brain C) somatic division and autonomic division D) sensory division and motor division E) somatic division and motor division
If the many offspring of a double-factor cross always have both recessive traits,
A. one parent was homozygous dominant for both traits. B. both parents were homozygous dominant for both traits. C. one parent was homozygous recessive for both traits. D. both parents were homozygous recessive for both traits.
Plants called legumes have chambers in their roots that house nitrogen-fixing bacteria. Nitrogen-fixing bacteria get both a place to live and energy while supplying nitrogen to a plant. What is this ecological relationship called?
A) Competition B) Parasitism C) Succession D) Predation E) Mutualism