Nutrition in Plants 1

What is the function of xylem in plants?

• Producing glucose

• Providing mechanical support

• Conducting water and mineral salts up from roots

• Conducting food from leaves to other parts

Which part of the leaf contains the most number of chloroplasts?

• Lower epidermis

• palisade mesophyll

• Upper epidermis

• Guard cell

What is the significance of stomata in a leaf?

• Conducting water and mineral salts up from roots

• Gaseous exchange

• Transporting food from leaves to other parts

• Producing glucose

What is the function of phloem in plants?

• Producing glucose

• Conducting water and mineral salts up from roots

• Providing mechanical support

• Conducting food from leaves to other parts

What is the role of guard cells in stomata?

• Conducting water and mineral salts up from roots

• Producing glucose

• Regulating the opening and closing of stomata

• Conducting food from leaves to other parts

Which part of the leaf does the main site of photosynthesis occur?

• palisade mesophyll

• Upper epidermis

• Guard cell

• Lower epidermis

What is the function of the cuticle in a leaf?

• Regulating the opening and closing of stomata

• Conducting food from leaves to other parts

• Producing glucose

• Preventing water loss

What is the main adaptation of xylem vessels?

• Long hollow tube made up of dead cells without cross walls

• Column of sieve tube cells

• Presence of lignin on inner walls

• Companion cell providing nutrients

Where are the vascular bundles located in leaves?

• Upper epidermis

• Lower epidermis

• Spongy mesophyll layer

• Guard cell

What is the function of the network of veins in a leaf?

• Conducting food from leaves to other parts

• Transporting substances

• Conducting water and mineral salts up from roots

• Providing mechanical support