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Name_____________________________________Date______________Hour______
Bio 134
Ch. 21 Introduction to Plants p. 604-621
21.1 Plant Evolutions and Adaptations
Main idea
Plant Evolution
What evidence is there that present-day plants and present-day green algae have common ancestry?
Plant Adaptations to Land Environments
1. Cuticle
2. Stomata
3. Vascular tissues
Vascular plants
Nonvascular plants
Name 2 functions of vascular tissues:
1
2
Reproductive strategies
What is the limiting factor in the reproduction of plants?
seed
Draw a sketch of a seed and label the following parts:
Embryo
Seed coat
nutrients
Alteration of Generations
What is an alteration of generations?
Plant Classification
How many plant divisions are there?
21.2 Nonvascular Plants
Main idea
What must be present in order for all nonvascular plants to reproduce?
Diversity of Nonvascular Plants
Name 2 characteristics of nonvascular plants:
1
2
3
Division bryophyta
Name 2 characteristics of these:
1
2
example
Division Anthocerophyta
What can be found in the spaces around the chloroplasts?
example
Division Hepaticophyta
How are these classified?
example
21.3 Seedless Vascular Plants
main idea
Diversity of Seedless Vascular Plants
Strobilus
Division Lycophyta
Example:
Epiphyte
Division Pterophyta
Example:
Rhizome
sporangium
Sorus
21.4 Vascular Seed Plants
main idea
Diverstiy of Seed Plants
Cotyledons
Name four adaptations for dispersal of seeds by seed plants:
1
2
3
4
Division Cycadophyta
Cones
What is the natural habitat for cycad plants?
Division Gnetophyta
How long can members of this division live?
Division Ginkgophyta
Describe the leaves of the Ginkgo biloba.
Division Coniferophyta
What are the reproductive structures of conifers?
Name 2 adaptations seen in conifers:
1
2
Division Anthophyta
How are anhophytes (flowering plants) classified?
Annual
Biennial
perennial