Evergreen, a plant that retains its leaves throughout the year. The term evergreen is usually used in describing trees and shrubs. Most evergreens are narrow-leaved and bear cones rather than flowers. Examples are spruce, hemlock, pine, and fir. Some evergreens are broad-leaved and bear flowers. Examples are mountain laurel, holly, and common myrtle.
Though they may be stuck in one place, plants have proven to possess a surprising array of capabilities. But the ability to feel pain? Scientists are learning that the possibility isn't as crazy as it sounds.
Pollen grains are, in essence, plant sperm. But how do the grains get where they need to go, and what's the advantage of trusting your genetic future to the winds?