Introduction to Plant Classification

1
Introduction to Plant Classification

• Chapter 22

2
Chapter Overview

• Life on Land
• Kingdom Characteristics
• Classification of Plants
• Bryophytes
• Tracheophytes

3
Advantages/Disadvantages of Life on Land?
4
Kingdom Characteristics?
5
Overview of Plant Taxonomy (See Table 22-1)

• Bryophytes (non-vascular)
• Tracheophytes (vascular)
• Seedless
• Seed-Containing
• non-flowering
• flowering plants with fruits
• monocots
• dicots

6
Characteristics of Bryophytes?

• example?
• specialized vascular system?
• roots?
• growth environment with regard to water and
  sunlight?
• size?

7
(No Transcript)
8
General Characteristics of Vascular Plants

• Diploid Generation Dominant
• Specialization
• roots
• leaves
• stems

9
(No Transcript)
10
Seedless Vascular Plants

• Includes Ferns and Three Other Divisions
• Fertilization Requires Water
• Gametophyte is independent, produces male and
  female gametes, and is a small part of the life
  cycle

11
(No Transcript)
12
An Overview of Reproduction in Seed Plants

• tiny gametophytes with no independent lives
• microspores (male) and megaspores (female)
  produced in separate sporangia
• megaspore develops into a ovule inside adult body
• microspore develops into pollen that will
  eventually fertilize the ovule to become a seed

13
The Gymnosperms

• Do not have flowers or fruits naked seeds
• Conifers and three other divisions

14
(No Transcript)
15
The Advantage of Being an Angiosperm

• Flowers promote efficient cross-pollination
• Fruits promote the survival and dispersal of
  seeds
• 275,000 species

16
(No Transcript)