Download Unit 14 Plants Angiosperms Notes

VASCULAR SEED PLANTS
ANGIOSPERMS
As days get longer and warmer: grass turns green, new leaves and young flowers.
Flowering plants are the most widespread, diverse, and colorful members of the plant
kingdom.
Adapted to all corners of the world
Species far outnumber the nonflowering plants
Familiar with: fruit trees, vegetables, cereal grain, wildflowers
ANGIOSPERMS
Most well known plants
Seeds, roots, stems, and leaves
= produce flowers and develop seeds that are enclosed in a fruit
Advantage = added protection the fruit provides
Anthophytes = division
2 classes
1. Monocotyledons = one seed leaf
60,000 species
Familiar: grasses, orchids, lilies, and palms
2. Dicotyledons = two seed leaves
Majority
170,000 species
Familiar = shrubs, trees (except conifers), wildflowers, and herbs
LIFE SPAN
Annual:
Live for only a year or less
Herbaceous = stem green and no wood
Corn, wheat, peas, beans
Drought resistant seeds survive winter
Biennials:
Life span two years
Develop large storage roots
Carrots, beets, turnips
First year grow many leaves and develop a strong root system
Winter: dies back and roots remain alive
Spring: food stored in roots used to produce new shoots that bear flowers and seeds
Perennials:
Live for several years
Produce flowers and seeds periodically = usually once a year
Survive by dropping leaves or dying back to soil level
Deciduous trees and shrubs
Many herbaceous (some grasses and wildflowers)