Structural Features of Plant Roots

The video explores the internal structure of plant roots, highlighting similarities with stems. It details the roles of the epidermis, cortex, endodermis, pericycle, and stele in nutrient absorption and transport. Root hairs and nodules are emphasized for their critical roles in water absorption and nitrogen fixation, particularly in legumes.

What is the primary function of the epidermis in roots?

• To transport water

• To store nutrients

• To produce carbohydrates

• To protect internal tissues

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

• Pericycle

• Cortex

• Epidermis

• Endodermis

What is the role of the pericycle in root development?

• It transports carbohydrates

• It gives rise to secondary roots

• It absorbs minerals

• It stores water

How do root hairs contribute to a plant's water intake?

• By converting nitrogen

• By storing water

• By creating a large surface area for absorption

• By transporting water to the leaves

What is the significance of root nodules in legume plants?

• They convert atmospheric nitrogen into a usable form

• They absorb water

• They store carbohydrates

• They protect the root from pathogens