2.5 Plant Transport Flashcards
What are the 3 plant organs?
Roots, stems, and leaves.
What is the function of the roots?
They keep a plant in the ground, and they absorb water and nutrients from the soil.
What is the function of the stem?
The stem supports the leaves and flowers. It transports water and nutrients between the roots and leaves.
What is the function of the leaves?
Leaves absorb sunlight and make food for the plant by photosynthesis.
What order (top to bottom) are the features of the internal structure of a leaf?
- Waxy cuticle
- Upper epidermis
- Palisade mesophyll
- Xylem and phloem
- Spongy mesophyll
- Lower epidermis
- Stomata and guard cells
What is the function of the waxy cuticle?
A waterproof layer on the top and bottom of a leaf
What is the function of the upper epidermis?
Allows light to pass through
What is the function of the palisade mesophyll?
Contains chloroplasts for photosynthesis (most photosynthesis occurs here)
What is the function of the spongy mesophyll?
Gasses can circulate and some photosynthesis occurs here
What is the function of the phloem?
To transport sugar up and down the plant to where it is needed most
What is the function of the xylem?
To transport water from roots to leaves in an upwards direction
What is the function of the lower epidermis?
Contains guard cells and stomata
What is the function of guard cells?
Controls the opening and closing of the stomata
What is the function of the stomata?
It is a pore to allow gasses in and out
What are root hair cells?
Single cells coming out of the main root that greatly increase the surface area
This allows the plant to take in large quantities of water and minerals
