Exploring Creation with Botany
Lesson One-B Review
How Do Scientist Classify Plants?
To choose which phylum a plant goes in,
botanist look for certain things.
1) Does the plant have tubes inside?2) How are the seedsproduced?
What is a Vascular Plant?
Vascular plants have tubes like veins that carry liquid inside the plant.
Liquid flowing up the plant is a mixtureof water and chemicals called xylem.
Liquid flowing down through theplant is a mixture of sugar and other
chemicals called phloem.
Take a look at your leaf…
The larger, thicker veinin the middle is
called the midrib.
It carries water fromthe stem to the restof the smaller veins
in the leaf.
What is a Nonvascular Plant?
A nonvascular plant, like the moss on the tree in the
picture, does not have veins.
A plant without veins does not have stems, roots or
leaves.
Since it does not have veins, it get water by absorbing it.
What about the seeds?
Botanists also look at the way plants make seeds when classifying them.
For instance, they wouldnotice that a peanut producesits seeds in a pod.
The pod is the outer shell around the seeds.
There are two different kinds of plants that make
seeds.
Angiosperms Gymnosperms
Makes flowers
Seed in a container
One giant phyla called Anthophyta
Seeds are uncovered
Four different phyla
Phylum Coniferophytamakes cones
Compare Four Different Phyla
Phylum Name MeaningVascular or Nonvascular
Type of Seeds
Anthophyta
Coniferohyta
Pterophyta
Bryophyta
antho (flower)phyta (plant)
conifer (cone-bearer)phyta (plant)
ptero (wing)phyta (plant)
bryo (moss)phyta(plant)
Vascular
Vascular
Vascular
Nonvascular
Seeds in a container from a flowerSeeds uncovered from a cone
No seeds but sporangia (sporesin a container)
No seeds but sporangia (sporesin a container)
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