Structure of Seed Structure of Seed PlantsPlants

Vascular TissuesVascular Tissues

What is a Vascular Tissue?What is a Vascular Tissue?

Specialized tissues that conduct Specialized tissues that conduct nutrients and water from one nutrients and water from one part of the plant to another.part of the plant to another.

2 Types of Vascular Tissues2 Types of Vascular Tissues

1) 1) XylemXylem

2) 2) PhloemPhloem

XylemXylem

XylemXylem type of tissue that provides type of tissue that provides support and conducts support and conducts waterwater and and nutrients from the roots.nutrients from the roots.

PhloemPhloem

PhloemPhloem The tissue that conducts food in The tissue that conducts food in vascular plants.vascular plants.

The Roots!The Roots!

Root FunctionsRoot Functions

1) Supply plants with water and minerals.1) Supply plants with water and minerals.

2) Hold plants securely in soil.2) Hold plants securely in soil.

3) Help store surplus food in some plants.3) Help store surplus food in some plants.

Ex: Carrots, potatoes, onions.Ex: Carrots, potatoes, onions.

Root StructureRoot Structure

Root cap release a substance that helps the root grow through soil.

Root SystemsRoot Systems

2 type of root systems2 type of root systems

1) 1) TaprootTaproot, one main root that grows , one main root that grows downward.downward.

2) 2) FibrousFibrous, several roots that spread , several roots that spread out from the base of a plant’s stem.out from the base of a plant’s stem.

What type of roots do these What type of roots do these plants have?plants have?

Stem (Shoot)Stem (Shoot) Stem FunctionsStem Functions

1) Stems support the plant’s body 1) Stems support the plant’s body (flowers/leaves).(flowers/leaves).

2) Stems support materials (via xylem and 2) Stems support materials (via xylem and phloem) between the roots and leaves.phloem) between the roots and leaves.

3) Some stems store water/materials3) Some stems store water/materials

Ex: Cactus have adapted to store water Ex: Cactus have adapted to store water in their stems.in their stems.

2 Types of Stems2 Types of Stems

HerbaciousHerbacious

Stems that are Stems that are soft, thin, and soft, thin, and flexible.flexible.

Woody Woody

Rigid stems made Rigid stems made of wood and of wood and bark.bark.

LeavesLeaves

The main function The main function of leaves is to of leaves is to make food for the make food for the plant.plant.

1.1. Chloroplast in Chloroplast in leaves capture leaves capture sunlight.sunlight.

2.2. Leaves absorb Leaves absorb COCO22