Plant Root Functions and Structures

The video tutorial explains the structure and function of plant roots, focusing on their role in water and mineral absorption. It covers the different zones of roots, including the meristematic, elongation, and maturation zones, and highlights the importance of root hairs in increasing surface area for absorption. The tutorial also discusses specialized root types, such as aerial roots, and the process of active transport, which involves the movement of substances against a concentration gradient using energy in the form of ATP.

What is the primary function of lateral roots?

• To absorb sunlight

• To provide structural support

• To increase water absorption

• To produce flowers

Which part of the root protects the young, delicate cells?

• Maturation zone

• Root cap

• Meristematic zone

• Elongation zone

What is the role of the elongation zone in roots?

• To divide cells rapidly

• To absorb minerals

• To protect the root tip

• To enlarge cells for root growth

How do root hairs increase the efficiency of water absorption?

• By being multicellular

• By having a large surface area

• By being thick and rigid

• By producing chlorophyll

What process allows water molecules to enter root hair cells?

• Active transport

• Diffusion

• Photosynthesis

• Osmosis

What are aerial roots primarily exposed to?

• Air

• Sunlight

• Soil

• Water

What energy form is used in active transport?

• NADPH

• Oxygen

• ATP

• Glucose

What is the main function of the xylem in plants?

• To store nutrients

• To conduct photosynthesis

• To produce seeds

• To transport water and minerals

Which part of the plant is primarily responsible for water absorption?

• Roots

• Stem

• Leaves

• Flowers

What is the main purpose of root hairs in plants?

• To conduct photosynthesis

• To absorb water and minerals

• To produce flowers

• To store food