Which of the following is true of conifers?
answers:
female cones produce pollen that fertilizes the egg.

most coniferous trees have both male and female cones.

male cones cannot produce pollen unless fertilized by the female cone.

female cones produce pollen that is trapped by the male cones’ scales

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.