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)