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Roots, Stems, and Leaves - Coggle Diagram
Roots, Stems, and Leaves
Root Structure
Root cap
Protect - tip of the root
Epidermis with root hair
Cortex
layer found between epidemis and vascular tissue
Endodermis
inner layer
Casparian strip
encircled by a waterproof strip
Pericyle
central of the root
Types of root
Taproot
lateral-branching roots.
Fibrous roots
numerous branching roots that are about the same size
Modified roots
Pneumatophores
supply oxygen to roots submerged in water.
Adventitious roots
unusual support structure
Stem structure
Herbaceous stems
Soft
Flexible
Capable of photosynthesis
Woody stems
Fibrous
Rigid
Bark stems
Tough
Corky tissue
Protect the stem from damage and insect invasion
Functions
Support plant leaves and reproductive structures
Transport water and nutrients
Growth of a stem
Apical meristem
Produces cells that grows the length of a stem
Vascular cambium
Produces additional cells to grow a stem diameter
Types of Stems
Rhizome
Food storage
Asexual reproduction
Runner
Asexual reproduction
Tuber
Food storage
Leaf structure
spongy mesophyll
cells with spaces in between, allowing gases move between the spaces
palisade mesophyll
tightly packed cells with many chloroplasts
stoma
pores that allow for gas exchange
Blade
flattened portion
Petiole
stalk that connects the blade with the leaf base
Vascular bundle
composed of xylem and phloem
Yasmeen Alswailem