Quiz on Gas Exchange in Plants

What is the plural form of 'stoma'?

• Stomi

• Stomae

• Stomas

• Stomata

Where does most photosynthesis occur in a leaf?

• Spongy mesophyll

• Palisade mesophyll

• Lower epidermis

• Upper epidermis

What is the primary function of stomata?

• Nutrient transport

• Gas exchange

• Water absorption

• Sunlight capture

What diffuses out of the stomata?

• Hydrogen

• Nitrogen

• Oxygen

• Methane

What is the role of guard cells?

• They store chlorophyll

• They capture light

• They transport nutrients

• They create pores for gas exchange

What is the main adaptation of xerophytic plants?

• Enhancing nutrient uptake

• Expanding root growth

• Reducing water loss

• Increasing sunlight absorption

What is the primary gas that diffuses into the stomata?

• Argon

• Oxygen

• Carbon dioxide

• Nitrogen

Why do stomata close at night?

• To reduce water loss

• To absorb more light

• To increase oxygen release

• To trap heat

What structure transports water and dissolved minerals in a plant?

• Xylem

• Cuticle

• Phloem

• Stomata

What is the function of the palisade mesophyll?

• Main site of photosynthesis

• Gas storage

• Nutrient distribution

• Water filtration