1. 4.16.12
• Turn your homework charts in to the sub
Article Review due Friday
• Homework: Plants packet
Plants test on Thursday

2. Review
• Describe the basic characteristics of a plant
List elements fundamental to plant survival
• Compare and contrast mosses, ferns, gymnosperms,
and angiosperms

3. Objectives
• Differentiate between annuals, biennials, and
perennials.
Compare and contrast roots, stems, and leaves
• Explain the functions of xylem and phloem.
Understand which tissues are responsible for plant
growth

4. The life of plants
• Just like humans, plants
have a lifecycle that takes
them from birth to death
There are 3 major
lifecycles
• Annuals
• Biennials
• Perennials

5. The life of plants
• Annuals
• Grow from seed,
mature, flower,
make seeds, and die
all in one growing
season

6. The life of plants
• Biennials
2 year lifecycle
• First year - basic
growth
Second year - more
growth, flowers and
seeds, and death

7. The life of plants
• Perennials
• Plants that live for
many years

8. Plant Anatomy
• Before we continue, what
are the three major parts
of a plant?
Roots
• Stems
• Leaves
• What do you think each
one does?

9. Plant Anatomy
• Roots
Absorb water and
nutrients from the
soil
• Anchor the plant in
the ground
Hold soil in place

10. Plant Anatomy
• Stems
Support system for
the plant body
• Contains transport
system for water
and nutrients

11. Plant Anatomy
• Leaves
Main
photosynthetic
system
• Contains stomata
which regulate
• How much water
leaves
• Gas exchange

12. Plant Anatomy
• Obviously the plant needs
a network of pipes to
transport material through
its body
Two major types of
vascular tissue
• Xylem
Phloem

13. Plant Anatomy
• Xylem
Transport water and
minerals
• Made of hollow cells
called tracheids and
vessel elements
• Cells stacked together
forming hollow pipes
• Xylem cells are dead

14. Plant Anatomy
• Phloem
Carries sugars
• Made of Sieve tube
cells stacked on top
of each other and
surrounded by
companion cells
Cells form a living
pipeline

15. Plant Growth
• Last, but certainly not
least, plants must grow
Most plants have
indeterminate growth
• Means that they grow
continuously
throughout their lives

16. Plant Growth
• One type of tissue is
responsible for all of the
growth seen in plants
• Meristematic Tissue:
The only plant tissue
that produces new
cells by mitosis

17. Plant Growth
• The end of stems and
roots are called apical
meristems
New cells are
produced here
• Adds to the length of
the root or stem

18. To Do
• Go back to Edmodo
and take your quiz
• Finish your plant
packet