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AP Biology: Plant Test One
One main root with many small roots branching out
There is no main root; good for water absorption. Holds onto the soil well, so it's good for controlling erosion.
A type of root that grows off of fallen trees.
Tiny projections that increase surface area on the root. Like villi and microvilli
The part of a leaf that is often misidentified as the leaf
The part of the leaf that intersects the stem
Modified leaves that facilitate reproductions
The upper mesophyll, closest to the cuticle
Tissue that makes up the outer covering of the plant
Everything other than vascular and dermal tissue
Tissue involved in transport (xylem & phloem)
Large central vacuole for photosynthesis
For starch storage (also a vacuole)
The photosynthetic cells with thin walls
Thick walls and elongated cells for structural support
These cells are supporting cells, when they're dead
Where plant growth occurs in the vertical direction. In the roots and the shoots (buds)
Lateral Meristem, Vascular Cambium
Allows the plant to grow wider
Zone of Cell Division
The lowest part of the root near the apical meristem that allows for cell divison
Zone of Elongation
The longest part of the root where the cells begin to grow, elongate, and specialize.
Zone of Differentiation (Maturation)
The part of the root where the cells are fully specialized
It produces the epidermis for the tree, which is known as bark.
Pathway in which water travels between cells.
Pathway in which water travels through cells.
A line of cells that only allow water to pass through them, not between them. Allows for the cells to control water loss and water gain.
Cells found in the xylem that all plants have
Cells found in the xylem that some plants have.
When a cell is full of water.
When a cell is void water.
A substance that acts on guard cells that force them to close.
Sieve Tube Elements
Phloem cells without nucleus or tonoplast (central vacuole) that are used for food transport.
Phloem cells that support the sieve tube elements by providing proteins for function, and serve as sources for food that needs to be transported.
Food transport in the phloem is called this.