Plant Anatomy

Allium root

Label allium root

Zone of maturation definition

Region where xylem and phloem mature and absorption takes place

Region where root hairs are located

Purpose of root hairs

Increase the roots surface area for gathering minerals, water, and O2

Zone of elongation definition

Region where cells elongate and push the apical meristem and root cap through the soil

Zone of division

Houses the RAM and responsible for primary growth

Ensures growth by adding new cells by mitosis

Replaces sloughed off root cap cells

Root cap purpose

Protects the RAM and secretes a polysaccharide slime to lubricate the soil

What is located in the zone of maturation?

Xylem and phloem

root hairs

Root model longitudinal section

Root model cross section

Significance of casparian strip

◦Waxy barrier attached to the cell walls in roots

Forces water and ions into the xylem

◦Materials are forced across plasma membranes rather that following cell walls

Prevents water and minerals from leaking out of the xylem

Monocot stems are known as a

atactostele

Dicot stems are known as

eustele

monocot stem

dicot stem

monocot stem labeled

dicot stems

monocot leaf microscope

monocot leaf

monocot leaf (only need to know stomata, xylem, and phloem)

dicot leaf microscope

dicot leaf

dicot leaf

Dicot stem model

Dicot stem model labeled

monocot stem model

same thing as dicot stem model but no pith. i gave up.

Leaf model