Structural Features of Plant Roots

The video tutorial explores the internal structure of plant roots, highlighting their similarities to stems. It examines the epidermis, cortex, endodermis, and pericycle, explaining their roles in protection, nutrient absorption, and growth. The tutorial also discusses root hairs and nodules, emphasizing their importance in water absorption and nitrogen fixation, particularly in legume plants.

What is the primary function of the epidermis in roots?

• To absorb sunlight

• To transport water

• To protect inner tissues

• To store nutrients

Which layer in the root is responsible for regulating the transfer of nutrients into the vascular system?

• Cortex

• Endodermis

• Pericycle

• Epidermis

What role does the pericycle play in root development?

• It stores carbohydrates

• It protects the root tip

• It absorbs water and minerals

• It gives rise to secondary roots

How do root hairs aid in nutrient absorption?

• By transporting carbohydrates

• By storing nutrients

• By protecting the root

• By secreting acids to dissolve minerals

What is a defining feature of legume plants related to root structure?

• Numerous root hairs

• Presence of a thick cortex

• Formation of root nodules

• Large xylem tubes