Plant Tissue Functions and Structures

The video tutorial explains the classification of plant tissue systems into three types: epidermal, ground, and vascular. It focuses on the epidermal tissue system, describing its components such as the epidermis, stomata, and epidermal appendages. The epidermis forms the outermost layer of the plant body, often covered by a cuticle to prevent water loss. Stomata, present in the epidermis of leaves, regulate transpiration and gas exchange. The video also covers the structure and function of guard cells and subsidiary cells. Lastly, it discusses the role of epidermal appendages like tricomes in water loss prevention.

What are the three main types of tissue systems in plants?

• Outer, Inner, Middle

• Dermal, Fundamental, Conducting

• Epidermal, Ground, Vascular

• Protective, Supportive, Transport

What is the primary function of the epidermal tissue system?

• Transport nutrients

• Store energy

• Protect the plant body

• Support plant structure

What is the role of the cuticle in the epidermis?

• Facilitate gas exchange

• Absorb sunlight

• Store nutrients

• Prevent water loss

What is the function of stomata in plant leaves?

• Absorb water

• Store food

• Regulate gas exchange

• Provide structural support

How do guard cells contribute to the function of stomata?

• They absorb nutrients

• They provide structural support

• They open and close the stomata

• They store water

What are subsidiary cells?

• Cells that store food

• Cells that support guard cells

• Cells that transport water

• Cells that absorb sunlight

What is the primary function of root hairs?

• Support plant structure

• Absorb water and minerals

• Store nutrients

• Facilitate gas exchange

What is the role of trichomes in the shoot system?

• Absorb sunlight

• Prevent water loss

• Store energy

• Transport nutrients

How do trichomes help in preventing water loss?

• By reflecting sunlight

• By storing water

• By secreting wax

• By absorbing water

What is a unique feature of trichomes in the shoot system?

• They are always unbranched

• They are always soft

• They are always stiff

• They can be secretory