Unit 2, Lesson 3
All Plants:
Introduction to Plants (Study Review)
BIG IDEAS:
are Multicellular (Eukaryotic)
can Reproduce either Sexually or Asexually depending on what type of plant they are.
All Plant Cells: 1. have a nucleus
control center for the cell
contains a chemical called DNA
2. have a cell wall
hard and rigid
completely surrounds the plant cell
offers protection from the weather
gives the plant support making it able to grow tall
3. have Chloroplasts
these contain a chemical called Chlorophyll
this is where Photosynthesis takes place
Chlorophyll turns sunlight into sugar that is used for Energy
Chlorophyll makes the plant green.
4. have a Vacuole
vacuoles are storage tanks
the Large Central Vacuole stores an emergency water supply
Plants can be placed into 2 categories: Vascular / Nonvascular
Vascular plants have veins that allow them to have the source of water (the ground) far from where it is needed.
(leaves, branches/ stem)
Examples of Nonvascular plants are: Moss, Liverworts, Hornworts.
Examples of Vascular plants are Ferns and Horsetails. Other Vascular plant examples are trees, celery,
and other tall plants. Almost all plants you see are Vascular plants.
All Nonvascular plants and some Vascular plants do not grow from seeds. They grow from spores. Spores are
the single-celled reproductive unit of nonflowering plants, bacteria, fungi, and algae.
Most vascular plants form seeds.
If the plant has a flower and a seed is formed and fruit forms around the seed, then the plant is called
an Angiosperm. Most plants fall into this category. If NO fruit forms around the seed, it is called a
Gymnosperm. Pine trees are typical examples of a Gymnosperm. The seed is usually found in a pine cone.
Plants
Nonvascular
Vascular
Seeds
Angiosperm
(Fruit)
Spores
Gymnosperm
(NO fruit)
Spores