(8) PLANT STRUCTURE/ PHYSIOLOGY (9-12)

What is secondary growth of woody dicot stems?

It increases girth (width)

What two tissues produce secondary growth?

Xylem and pholem

Pith function

Storage

Primary Xylem function

Moves water and minerals upward

Secondary Xylem function

Moves water and minerals upward

Vascular Cambium function

Produces secondary growth

Secondary Phloem function

Moves nutrients around the plant

Primary Phloem function

Moves nutrients around the plant

Cortex function function

Storage

Phelloderm Function

Made of parenchyma cells Unknown function

Cork Cambium function

Produces phelloderm and cork cells

Cork cells function

Physical barrier for protection

What is heartwood and what is its function?

It’s older, darker wood, Used for support

What is sapwood and what is its function?

It’s younger and used for water movement

What type of xylem cells do conifers have?

tracheids

What is the common name of the wood that comes from conifers?

soft woods

What type of xylem cells do woody dicots have?

vessels elements

What is the common name of the wood that comes from woody dicots?

Hard wood

What is the function of spiral vessel elements?

carrying water and minerals upward in the stem