The Root

Key Notes :

Definition of a Root:

• The root is the part of a plant that grows underground and holds the plant in place.
• It absorbs water and nutrients from the soil.

Functions of Roots:

• Anchorage: Roots anchor the plant firmly in the ground.
• Absorption: Roots take in water and minerals needed for the plant to grow.
• Storage: Some roots store food for the plant (e.g., carrots, beets, radishes).

Types of Roots:

• Taproots: A single, thick main root with smaller side roots (e.g., carrot, radish).
• Fibrous Roots: A network of thin roots spreading out from the base of the stem (e.g., grass, wheat).

Structure of a Root:

• Root Cap: Protects the tip of the root as it grows.
• Root Hairs: Tiny hair-like structures that increase the surface area for absorption.

Importance of Roots:

• Provide stability to the plant.
• Help plants get water and nutrients from the soil.
• Store food for human and animal consumption.

Examples of Roots We Eat:

• Carrots, beets, turnips, radishes, and sweet potatoes.

Fun Facts:

• The roots of some trees can grow as deep as 20 feet or more to reach water!
• Some plants, like mangroves, have roots that grow above the ground to help them breathe in swampy areas.

Let’s practice!