Exchange (AQA A-Level Biology): Flashcards
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10 cards from this deck
Two processes requiring gas exchange in plants
Two processes requiring gas exchange in plants
Respiration and photosynthesis
Gases exchanged during plant respiration
Gases exchanged during plant respiration
O₂ consumed, CO₂ produced
Gases exchanged during photosynthesis
Gases exchanged during photosynthesis
CO₂ taken in, O₂ released
Stomata definition
Stomata definition
Microscopic pores on leaves for gas exchange
Location of most stomata
Location of most stomata
Lower leaf surface (lower epidermis)
Function of guard cells
Function of guard cells
Control opening and closing of stomatal pore
Effect of turgid guard cells
Effect of turgid guard cells
The stoma opens
Characteristics of palisade mesophyll
Characteristics of palisade mesophyll
Tightly packed cells rich in chloroplasts
Characteristics of spongy mesophyll
Characteristics of spongy mesophyll
Loosely arranged cells with large air spaces
Three key leaf adaptations for gas exchange
Three key leaf adaptations for gas exchange
Short diffusion pathways, large surface area, air spaces