UNIT 2: CHAPTERS 22, 23, 24
Chapter 22 – Plant Structure, Growth, and Reproduction Modules 22.2
– 22.8, and 22.10 – 22.15
22.2 - Angiosperms
Gymnosperm - Angiosperm -
Angiosperms have dominated the land for more than 100 million years,
with about 250,000 million species of flowering plants.
Botanist, place most angiosperms within two groups: Monocots(1
leaf), and Dicots(2 leaves) (referencing to the first leaves on the
The embryonic leaves are called Seed Leaves, or Cotyledons
of dicots are, called eudicots originate from the a common ancestor, with
a few evolving
- large group of related plants including : orchids, bamboos, palms, lilies,
grains and grasses.
- Parts of monocots: Cotyledon(1 leaf, ), leaves