Chapter 2 – Plant Structures and Functions

Chapter 2 – Plant
Structures and
Functions
Lesson 1 –
Vascular Plants
What are vascular plants?
• Vascular plants have tubes
that carry water and
nutrients up and down the
plant.
grass
trees
bushes
What are vascular plants?
• Parts of a vascular plant:
– roots (anchor plant, take
in food & water)
– stems (support plant,
move materials from
roots to leaves)
– leaves (make food)
What are vascular plants?
• Two kinds of vascular plants:
1. seedless plants: grow
from a spore (a single cell
that can develop into a
new plant)
ferns
What are vascular plants?
• Two kinds of vascular plants:
2. seed plants: make & grow
from seeds (seed contains
undeveloped plant and
stored food in a protective
coat)
no
flowers
flowers
Classifying Seed Plants
• Two kinds of seed plants:
1. angiosperms: produce
flowers
2. gymnosperms: do not
produce flowers
(seeds are produced
inside a cone)
What do flowers do?
• Parts of a flower:
– stamen (male part that
produces pollen grains)
– pistil (female part that
produces egg cells)
– ovary (bottom of pistil;
stores egg cells)
Parts of a Flower
stamen
(yellow tips are
pollen grains)
pistil
ovary (bottom part of pistil)
Seeds
1. pollination: movement of
pollen grains from a
stamen to a pistil by wind,
insects, or birds
2. Pollen and an egg cell join
and form a seed.
Seeds
3. Seeds are scattered by
wind or animals.
All images courtesy of
Microsoft Office Online.

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