Plant Repiratory System Flashcards
What are all of the organelles in a leaf
PASS GLUMW
Waxy cuticle
Upper epidermis
Mesophyll cell
Phloem
Spongy mesophyll
Air space
Stomata pore
Guard cell
Lower epidermis
What are all the leaves adaptations
WASPSS
Wide and flat
Palisade cells long and thin
Spongy mesophyll spaced apart
Short diffusion distance
Air spaces between spongy mesophyll
Stomata
What is a xero phyte
A species of plant that has adapted to survive in an environment with little liquid water
What are the are the adaptations of cacti
LES
Long roots
Sunken in stomata prevent water loss
Extra waxy cuticles to prevent water loss
What are all the general xenophyte adaptations
LRDWTSS
Leaf hairs
Rolled leaves
Deep roots
Widespread shallow roots
Thick cuticle
Stomata sunken in pits
Small leaf surface area to vol. Ratio
What does stomata sunken in pits mean as an adaptation
Humid air is trapped reducing water potential gradient in stomata and traps moist air
What do adaptations in leaf hairs mean
They trap moist hair
How are rolled leaves an adaptation
Upper epidermis faces inwards to trap humid air
how are deep roots an advantage to xenophytes
they absorb water in deep soil
how are widespread shallow roots an advantage to xenophytes
more access to warer and inc. surface area
how are thick cuticles advantageous adaptations to xenophytes
stops uncontrolled evaporation from leaf cells
what is transpiration
Transpiration is a process that involves loss of water vapour through the stomata of plants. The loss of water vapour from the plant cools the plant down when the weather is very hot, and water from the stem and roots moves upwards or is ‘pulled’ into the leaves.
what causes transpiration
direct sunlight
