plant organisation Flashcards
(28 cards)
What is the main organ of photosynthesis in a plant?
The leaf.
What is photosynthesis?
The process where plants make glucose using carbon dioxide, water, and sunlight.
What is the word equation for photosynthesis?
Carbon dioxide + water → glucose + oxygen (with light and chlorophyll).
What is the function of the palisade mesophyll layer?
Contains many chloroplasts for photosynthesis.
What is the function of the spongy mesophyll layer?
Has air spaces to allow gases to diffuse (carbon dioxide and oxygen).
What is the function of the upper epidermis?
Thin and transparent to let light through; protects the leaf.
What is the waxy cuticle for?
A waterproof layer to reduce water loss from the leaf.
What is the function of the lower epidermis?
Contains stomata for gas exchange.
What are stomata?
Small openings that allow carbon dioxide in and oxygen and water out.
What controls the opening and closing of stomata?
Guard cells.
What is the function of xylem?
Transports water and minerals from the roots to the leaves.
What is the function of phloem?
Transports sugars (glucose) made in photosynthesis around the plant.
What is transpiration?
The loss of water vapour from leaves through the stomata.
What factors increase transpiration rate?
Higher temperature, more light, more wind, and lower humidity.
What is the main organ of photosynthesis in a plant?
The leaf.
What is photosynthesis?
The process where plants make glucose using carbon dioxide, water, and sunlight.
What is the word equation for photosynthesis?
Carbon dioxide + water → glucose + oxygen (with light and chlorophyll).
What is the function of the palisade mesophyll layer?
Contains many chloroplasts for photosynthesis.
What is the function of the spongy mesophyll layer?
Has air spaces to allow gases to diffuse (carbon dioxide and oxygen).
What is the function of the upper epidermis?
Thin and transparent to let light through; protects the leaf.
What is the waxy cuticle for?
A waterproof layer to reduce water loss from the leaf.
What is the function of the lower epidermis?
Contains stomata for gas exchange.
What are stomata?
Small openings that allow carbon dioxide in and oxygen and water out.
What controls the opening and closing of stomata?
Guard cells.
