Which substance(s) produced in one part of a plant affect(s) another part?
a. herbicides
b. enzymes
c. oxygen and nitrogen
d. hormones
The early growth stage of a plant embryo is called
a. germination.
b. dormancy
. c. fertilization.
d. pollination.

The gametophytes of gymnosperms live inside reproductive structures called
a. cones.
b. angiosperms.
c. flowers.
d. embryos.

Which of the following statements is true about bryophytes?
a. They have specialized tissues that conduct water
. b. They are a group of plants made up of
algae and mosses.
c. They are not highly dependent on water
. d. They draw up water by osmosis.

The outer covering of a plant consists of
a. meristematic tissue.
b. dermal tissue.
c. ground tissue.