How Plants Are Classified
Part 2: Reproduction
6-2.3: Compare the characteristic structures
of various groups of plants (including
vascular or nonvascular, seed or sporeproducing, flowering or cone-bearing, and
monocot or dicot).
Link
• Five fast things you know about seeds
?
Essential Question
What are the main ways scientists
classify plants?
You already know they are classified as
vascular and non-vascular.
The following classification can also be
used to group plants.
Seed Producing Plants
• Seed-producing plants are plants that
reproduce through seeds. Seed plants make
their own seeds.
• Seeds contain the plant embryo (the beginnings
of roots, stems, and leaves) and stored food
(cotyledons) and are surrounded by a seed coat.
From those seeds, new plants grow.
Seed Producing Plants
• There are two major groups of seed-producing
plants: cone-bearing plants (gymnosperm)
and flowering plants (angiosperm).
Seed Producers
The Cone-Bearing Plants
• Most cone-bearing plants are evergreen with
needle-like leaves.
• Conifers never have flowers but produce seeds
in cones. These seeds are said to be “naked”.
• Examples include pine, spruce, juniper,
redwood, and cedar trees.
Seed Producers:
The Flowering Plants
• Flowering plants differ from conifers because
they grow their seeds inside an ovary, which is
embedded in a flower.
• The flower then becomes a fruit containing
the seeds.
Flowering Plants: Cont.
• Examples include most trees, shrubs, vines,
flowers, fruits, vegetables, and legumes
(beans).
The Non-Seed Producers: Spore
Producing Plants
• Spore-producing plants are plants that produce
spores for reproduction instead of seeds.
• Spores are much smaller than seeds.
• Almost all flowerless plants produce spores.
• Examples include mosses and ferns.
Give 3 qualitative observations
about fern spores?
See Fern Spores Video
Give 3 qualitative observations about
moss spores?
See Moss Spores Video
Classify each picture as a seed
producer or spore producer
1.
2.
4.
3
.
5.
Summarize
Follow the teacher to create a diagram
comparing seed-producers to sporeproducers.
Seed Producers
Spore Producers
Answer EQ
• Define key terms.
1. Seed
2. Spore
3. Conifer