unit 10
TRANSCRIPT
4.16.124.16.12
Turn your homework charts in to the sub
Article Review due Friday
Homework: Plants packet
Plants test on Thursday
ReviewReview
Describe the basic characteristics of a plant
List elements fundamental to plant survival
Compare and contrast mosses, ferns, gymnosperms, and angiosperms
ObjectivesObjectives
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
The life of plantsThe life of plantsJust like humans, plants have a lifecycle that takes them from birth to death
There are 3 major lifecycles
Annuals
Biennials
Perennials
The life of plantsThe life of plants
Annuals
Grow from seed, mature, flower, make seeds, and die all in one growing season
The life of plantsThe life of plants
Biennials
2 year lifecycle
First year - basic growth
Second year - more growth, flowers and seeds, and death
The life of plantsThe life of plants
Perennials
Plants that live for many years
Plant AnatomyPlant AnatomyBefore we continue, what are the three major parts of a plant?
Roots
Stems
Leaves
What do you think each one does?
Plant AnatomyPlant Anatomy
Roots
Absorb water and nutrients from the soil
Anchor the plant in the ground
Hold soil in place
Plant AnatomyPlant Anatomy
Stems
Support system for the plant body
Contains transport system for water and nutrients
Plant AnatomyPlant AnatomyLeaves
Main photosynthetic system
Contains stomata which regulate
How much water leaves
Gas exchange
Plant AnatomyPlant AnatomyObviously the plant needs a network of pipes to transport material through its body
Two major types of vascular tissue
Xylem
Phloem
Plant AnatomyPlant 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
Plant AnatomyPlant AnatomyPhloem
Carries sugars
Made of Sieve tube cells stacked on top of each other and surrounded by companion cells
Cells form a living pipeline
Plant GrowthPlant Growth
Last, but certainly not least, plants must grow
Most plants have indeterminate growth
Means that they grow continuously throughout their lives
Plant GrowthPlant 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
Plant GrowthPlant 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
To DoTo Do
Go back to Edmodo and take your quiz
Finish your plant packet