Plant Organs

Roots

They anchor the shoot into the soil and support the upright growth of stems

They absorb minerals and water from the soil

They provide storage of energy reserves

Root Anatomy

Root Morphology

Rhizobia

It is a indigenous soil bacteria

Mycorrhizae

Stem

Primary supporting structure for the leaves, flowers, and fruits of a plant

The conduit for the movement of water, nutrients, and products of photosynthesis between the crown of the plant and the roots

Grasses have tillers,or shoots which arise from the crown and consist of stem and leaf parts and sometimes reproductive parts.

Rhizomes-underground stems that are important for asexual reproduction of plants

Stolons-this stems are called runners Tubers- significant for the storage of

carbohydratesBulbs- narrow stem surrounded by layers

of concentric ,fleshy ringsCorms- compressed,solid, fleshy portions of

an underground stem

Crown-formers or Clone-formers

Leaves

Primary organs where the essential processes of photosynthesis and transpiration occur.

Venetion- that are vascular system of the plant for the movement of water and nutrients

Blade-is the flat surface of a leaf that is exposed for maximum interception of sunlight

Sheath-is the lower portion of the leaf that surrounds the stem

Collar-located at the union of the blade and sheath

Petiole- attaches the blade to the stem

FlowersModified leaves that may retain some leaf-

like characteristics.4 PARTS OF A FLOWER

Stamens-male component of flower

Petals- modified leaves that is important for attracting pollinators

Sepals- green leaf-like structuresPistil-the female portion of the flower

Stigma, style and ovary

Classes of Flowers

Complete flowers- composed of stamens ,pistils, petals and sepals

Incomplete flowers-lack 1 or more of the four parts

Perfect flowers-have both stamens and pistils

Imperfect flowers- lack either the stamen or pistil

Monoecious and dioecious

Inflorescence

Flowers clustered together on branches or system of flowers.

Fruits

A ripened or mature ovary containing seed Maybe classified as fleshy or driedFleshy fruits have a soft consistency and may

be consumed by humansDried fruits are those that have hard seeds

contained within a wall

Seeds

Mature fertilized ovules in the ovary

Each seed contains embryoSeeds also have food storage reseves

Protected by a seed coat

Seed Germination

The term germination is applied to the resumption of the growth of the seed embryo after the period of dormancy. Germination does not take place unless the seed has been transported to a favorable environment by one of the agencies of seed dispersal.