Xerophytes and Hydrophytes Adaptations Quiz

What is a primary adaptation of xerophytes that helps them reduce water loss?

• Large, broad leaves

• Thick, waxy cuticle

• High stomatal density

• Shallow root systems

In xerophytes, thick waxy cuticle reduces transpiration and water vapour loss by?

• increasing diffusion pathway

• decreasing diffusion pathway

• increases water potential gradient

• decreases the surface area of leaves

Which of the following is a common adaptation of hydrophytes to support buoyancy?

• Thick, woody stems

• Air-filled cavities in tissues

• Deep root systems

• Small, needle-like leaves

Which feature is commonly found in hydrophytes to facilitate gas exchange?

• Thick cuticle

• Sunken stomata

• Large air spaces in leaves

• Reduced leaf surface area

Sunken stomata in xerophytes reduces transpiration and water vapour loss by trapping air/moisture which makes ..............?

• water potential gradient steeper

• water potential gradient less steep

• has no effect of water potential

• increases oncotic pressure

Which of the following is a structural adaptation of hydrophytes for living in water?

• Thick, waxy cuticle

• Reduced root system

• High stomatal density

• Deep root system

Xerophytes have leaves that are reduced to spines to reduce water vapour loss by ?

• increasing the water potential

• reducing the water potential gradient

• increasing the surface area of leaves

• reducing the surface area of leaves

What is a common feature of hydrophyte leaves that helps them float?

• Thick, waxy cuticle

• High density of stomata

• Large air spaces

• Deep root system

Deep and extensive root system in xerophytes is an adaptation to absorb water efficiently from the soil by .....................................................?

• increasing water potential gradient

• increasing diffusion pathway

• increasing surface area

• increasing concentration gradient

How do hydrophytes typically deal with the low oxygen availability in waterlogged soils?

• By having a thick cuticle

• By developing aerenchyma tissue

• By reducing leaf size

• using their hydathodes