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