The document provides an overview of plant biology concepts for students. It includes sections on turning in homework, plant characteristics, plant anatomy including roots, stems and leaves, the three types of plant lifecycles (annuals, biennials, perennials), and plant growth through meristematic tissue. The objectives are to differentiate plant structures and lifecycles, understand plant transport systems of xylem and phloem, and explain plant growth.

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