The reproductive structures used by cycads are called?
a. flowers.
b. sporangia.
c. sori.
d. cones.

Which medullary index indicates a human hair? a. 0.653 b. 0.733 c. 0.516 d. 0.256

Where would you expect to see seedless plants, such as ferns and mosses? a. in a botanical museum, because they are all extinct b. low and close to the ground in a moist environment c. climbing high while circling the branches of another plant d. deeply rooted in a forest with a trunk that reaches 20 meters or more

Of your good in bio kusing a series of preliminary observations; pstate a problem developed from these observations, formulate a hypothesis, design an experiment to test the hypothesis