Growing a new spider plant from the plantlets of a parent plant is an example of
a. vegetative reproduction.
b. double fertilization.
c. sexual reproduction.
d. self pollination.

Which of the following statements best distinguishes a hypothesis from a theory? a. theories are hypotheses that have been proved. b.hypotheses are guesses; theories are correct answers c. hypotheses usually are relatively narrow in scope; theories have broad explanatory power. d. theories are proved to be true; hypotheses are often contradicted by experimental results.