Adaptations of Root Hair Cells and Xylem in Plants

• Science
• Further Education (Key Stage 5)

Adaptations of Root Hair Cells and Xylem in Plants

Learning Objectives

At the end of the lesson you will: 

• understand the structure and function of root hair cells in plants. 
• you will be able to describe how root hair cells are adapted for the absorption of water and mineral ions. 
• you will comprehend the role of xylem in support and transport within plants. 
• you will be able to explain how the structure of xylem is suited to its functions.

What do you already know about root hair cells and xylem in plants?

Structure and Function of Root Hair Cells

Root hair cells are specialized for the absorption of water and minerals, featuring a large surface area, a permanent vacuole, and numerous mitochondria for active transport.

Adaptations of Root Hair Cells for Absorption

Root Hair Cells: Cells on the root surface of plants that absorb water and mineral ions necessary for photosynthesis and survival. Permanent Vacuole: A large central vacuole in root hair cells that speeds up osmosis. Mitochondria: Organelles in root hair cells that provide energy for active transport of minerals.

Role of Xylem in Support and Transport

Xylem, composed of dead cells reinforced with lignin, forms hollow tubes that support the plant and transport water and minerals from roots to leaves.

Structural Adaptations of Xylem

Xylem: Plant tissue involved in the transport of water and minerals from roots to leaves, also providing structural support. Lignin: A complex organic compound that strengthens the cell walls of xylem, aiding in support and forming hollow tubes for transport.

Definition List

Root Hair Cells: Cells on the root surface of plants that absorb water and mineral ions necessary for photosynthesis and survival. Permanent Vacuole: A large central vacuole in root hair cells that speeds up osmosis. Mitochondria: Organelles in root hair cells that provide energy for active transport of minerals. Xylem: Plant tissue involved in the transport of water and minerals from roots to leaves, also providing structural support. Lignin: A complex organic compound that strengthens the cell walls of xylem, aiding in support and forming hollow tubes for transport.

Write down 3 things you learned in this lesson.

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Write down 2 things you want to know more about.

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Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.