Plant Biology: Root Systems and Functions

What is the function of the Casparian strip in plant roots?

• It transports water

• It prevents water loss

• It regulates the flow of water and minerals

• It stores nutrients.

The endodermis is a layer of cells in plant roots that:

• Absorbs sunlight

• Protects the root

• Regulates the passage of substances

• Stores food

Fill in the blank: The _______ route involves the movement of water through the cell walls and spaces between cells.

• Extracellular

• Intracellular

• Transcellular

Which type of root system is characterized by a dense network of roots?

• Tap root system

• Fibrous root system

• Napiform roots

• Adventitious roots

What is the primary function of napiform roots?

• Water absorption

• Nutrient storage

• Photosynthesis

• Support

The pericycle is found in which part of the plant?

• Leaf

• Stem

• Root

• Flower

Fill in the blank: _______ are channels that allow communication between plant cells.

• A) Trichomes

• B) Plasmodesmata

• C) Stomata

Which root system is typically found in dicot plants?

• Fibrous root system

• Tap root system

• Adventitious root system

• Aerial root system

Trichomes are structures found on plant surfaces that: A) Aid in water absorption B) Protect against herbivores C) Facilitate gas exchange D) Store nutrients.

• A) Aid in water absorption

• B) Protect against herbivores

• C) Facilitate gas exchange

• D) Store nutrients

What do roots primarily do for a plant?

• Conduct photosynthesis

• Absorb water and nutrients

• Produce seeds

• Store sunlight.