All plants have these four organs 1 2

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All plants have these four organs 1. 2. 3. 4. Roots Stems Leaves Reproductive

All plants have these four organs 1. 2. 3. 4. Roots Stems Leaves Reproductive Structures

Major Groups of Plants 1. 2. 3. 4. Mosses Ferns and Allies Gymnosperms Angiosperms

Major Groups of Plants 1. 2. 3. 4. Mosses Ferns and Allies Gymnosperms Angiosperms a. Monocots b. Dicots

The two major classes of flowering plants Monocots Dicots

The two major classes of flowering plants Monocots Dicots

Forage Classification GRASSES n n Perennials LEGUMES n Perennials n Cool Season n Warm

Forage Classification GRASSES n n Perennials LEGUMES n Perennials n Cool Season n Warm Season Annuals n Cool Season n Warm Season

Plant Vocabulary n Grass: monocots (one seed leaf) n herbaceous plant n parallel leaf

Plant Vocabulary n Grass: monocots (one seed leaf) n herbaceous plant n parallel leaf veins n fibrous root system n Legume: dicots (two seed leaves) n “netted” leaf veins n usually have a taproot n produce seed in a pod n nitrogen fixation

Grass or Legume? http: //aggie-turf. tamu. edu/aggieturf 2/grasswee/grasses/kblue. htm http: //forages. oregonstate. edu/media_library/alfalfa/screen/39. jpg

Grass or Legume? http: //aggie-turf. tamu. edu/aggieturf 2/grasswee/grasses/kblue. htm http: //forages. oregonstate. edu/media_library/alfalfa/screen/39. jpg

Plant Vocabulary n Annual: A plant that germinates, grows, reproduces, and dies in one

Plant Vocabulary n Annual: A plant that germinates, grows, reproduces, and dies in one growing season n Perennial: A plant that has the ability to live for more than one year n Biennials – weak perennials that usually die after the second growing season

Plant Vocabulary n Warm Season Plants: plants that begin growth and/or are planted in

Plant Vocabulary n Warm Season Plants: plants that begin growth and/or are planted in the spring or early summer and do most of their growth during the warmest part of the year n Cool Season Plants: plants that begin growth and/or are planted in the fall or early spring and do most of their growth during the coolest months of the year (except during winter)

Common Characteristics of Some Pasture Species LEGUMES

Common Characteristics of Some Pasture Species LEGUMES

Legumes n Dicot plants n Two seed-bearing leaves n Legume roots host Rhizobium bacteria

Legumes n Dicot plants n Two seed-bearing leaves n Legume roots host Rhizobium bacteria n Often have taproots n Trifoliate leaves Shape of leaflets n Texture (hairy, shiny, etc. ) n

Legume Plant Parts

Legume Plant Parts

Seed dormancy • Seeds can remain dormant in the soil for long periods of

Seed dormancy • Seeds can remain dormant in the soil for long periods of time. Dormancy helps ensure that seeds only germinate when conditions are right. • When we weed or cultivate a bare patch of soil, the weeds that sprout up immediately usually come from the “seed bank” already in the soil.

Breaking dormancy • Seeds require moisture and the right temperature to germinate. • In

Breaking dormancy • Seeds require moisture and the right temperature to germinate. • In addition, some seeds germinate only after certain environmental signals: • Drying • Temperature (period of cold or heat) • Disruption of the seed coat

Germination: monocot

Germination: monocot

Germination: dicot

Germination: dicot

Tap root and Fibrous (Diffuse) Root Systems – Both arise from radicle

Tap root and Fibrous (Diffuse) Root Systems – Both arise from radicle

PLANT ORGANS Plants generally have four organs RootsPLANT ORGANS Plants generally have four organs Roots
PLANT ORGANS Plants generally have four organs RootsPLANT ORGANS Plants generally have four organs Roots
Part Sensory Organs The Sensory Organs Sensory organsPart Sensory Organs The Sensory Organs Sensory organs
Immune organs Immune organs p Central immune organsImmune organs Immune organs p Central immune organs
Sense Organs Sense Organs Sense organs contain aSense Organs Sense Organs Sense organs contain a
Plants Are all plants the same All plantsPlants Are all plants the same All plants
Plants II Plant organs Plant organs Root systemPlants II Plant organs Plant organs Root system
ORGAN SYSTEMS IN PLANTS Organs Working Together OrgansORGAN SYSTEMS IN PLANTS Organs Working Together Organs
Defining Plants 1 Defining Plants Land plants haveDefining Plants 1 Defining Plants Land plants have
Four Types Four Types Four Types Four TypesFour Types Four Types Four Types Four Types
Why do Plants Have Flowers Plants have flowersWhy do Plants Have Flowers Plants have flowers
Marine Plants All plants are multicellular have cellMarine Plants All plants are multicellular have cell
PLANTS An overview All plants have a cuticlePLANTS An overview All plants have a cuticle
Plants Characteristics of all plants 1 All arePlants Characteristics of all plants 1 All are
ROOTS LEAVES STEMS A Plants have 3 organsROOTS LEAVES STEMS A Plants have 3 organs