Vascular Plants with Seeds
These
plants do not require water for
sexual reproduction.
They reproduce by seeds rather than
spores.
Seeds are multicellular and contain a
young plant called an embryo.
Characteristics of Seed Plants
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All seed plants have vascular tissue that
transports water and nutrients throughout
the plant.
They also have roots, stems, and leaves.
Vascular Plants with Seeds
There are two groups of seed plants—cone-bearing
gymnosperms and flowering angiosperms.
Two main groups of seed plants:
Gymnosperm
 Angiosperms
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Gymnosperms
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In gymnosperms,
seeds are produced in
a cone.
Different types
of gymnosperms
include conifers,
cycads, ginkgoes,
and gnetophytes.
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gymnosperms
• the seed plants that do not first produce a
flower before the seed
• means "naked seed" - produce seeds not
covered by the walls of an ovary
• do not form flowers or fruits
• produce cones or cone-like structures
Gymnosperms - conifers
Gymnosperms - cycads
Gymnosperms - ginkgoes
Gymnosperms - gnetophytes
Angiosperms
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There are more than 260,000 species
of flowering plants, or angiosperms.
Almost all of the food eaten by humans
comes from angiosperms or from animals
that eat angiosperms.
angiosperms
• The Flowering Plants – means “covered
seed”
• All have seed enclosed in a fruit
• All have flowers (not all are colorful
blossoms - corn tassels and catkins of oak
trees)
Angiosperms
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Angiosperms produce
seeds that are part of a
fruit.
Fruit grows from parts
of a flower.
All angiosperms
produce flowers.
CORBIS
Angiosperms – sub divisions
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Annuals
Biennials
Perennials
Angiosperms - Annuals
Plants that grow, flower, and produce seeds in
one growing season are called annuals.
Angiosperms - Biennials
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Biennials complete their life cycles in two
growing seasons.
During the first year, the plant grows roots,
stems and leaves.
In the second growing season the plant produces
new stems, leaves, flowers, and seeds.
Angiosperms - Perennials
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Perennial plants, like trees and shrubs, can live
for more than two growing seasons.
Flowering plants are organized into two
groups—monocots and dicots.
These groups are based on the number of leaves
in early development, or cotyledons, in a seed.
angiosperms
Angiosperms subcategories
• Monocots
• Dicots
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Flowering plants are organized into two
groups—monocots and dicots.
These groups are based on the number of
leaves in early development, or cotyledons, in
a seed.
Gymnosperms vs Angiosperms