Plants Form & FunctionPlant Morphology

AP Biology

Plant Morphology

• Flowers• Stem• Leaves• Fruits• Roots

Plant Morphology - Roots

• Functions– Absorb water & minerals– Anchor plant

Plant Morphology - Roots

• Root Systems• Fibrous• No main root• Fast absorption of surface water

• Holds soil – prevention of erosion

Plant Morphology - Roots

• Root Systems• Tap• 1 main root• Smaller secondary roots

• Strong anchorage

• Absorbs deep water

Plant Morphology - Roots

• Modified Roots• Prop roots• Support

Plant Morphology - Roots

• Modified Roots• Climbing• Support

Plant Morphology - Roots

• Modified Roots• Aquatic

Plant Morphology - Roots

• Modified Roots• Food & water storage

Plant Morphology - Stems

• Herbaceous Plant

Plant Morphology - Stems

• Woody Stem– Terminal bud– Axillary bud– Lenticels– Leaf scar– Terminal bud scar

Plant Morphology - Stems

• Woody Stem

Plant Morphology - Stems

• Modified Stems• Thorns• Protection

Plant Morphology - Stems

• Modified Stems• Tuber• Storage

Plant Morphology - Stems

• Modified Stems• Stolon• Reproduction

Plant Morphology - Stems

• Modified Stems• Corm• Storage

Plant Morphology - Stems

• Modified Stems• Tendrils• Support• Climbing

Plant Morphology - Leaves

Plant Morphology - Leaves

Monocot LeavesParallel veins

Plant Morphology - Leaves

Dicot LeavesNetted veins

Plant Morphology - Leaves

Dicot LeavesSimple

Plant Morphology - Leaves

Dicot LeavesCompound

Monocot vs. Dicot

Monocot vs. Dicot

• Monocot• Fibrous Root System

• Dicot• Tap Root System

Monocot vs. Dicot

• Monocot• Parallel veins

• Dicot• Netted veins

Monocot vs. Dicot

• Monocot• Flower parts in 3’s

• Dicot• Flower parts 4’s/5’s

Monocot vs. Dicot

• Monocot• Vascular bundles scattered

• Dicot• Vascular bundles in a ring