bio quiz 12/2

epidermis

upper and lower outer layers, 1 cell layer thick (protection

Vascular (Vein)

transport xylem - water; phloem - food

mesophyll

where photosynthesis occurs (also called parenchyma)

Cuticle

waxy covering on top to minimize water loss

Guard cells

regulate the size of the stomata (only epidermal cells with chloroplasts).

Stomata

openings in leaf - mostly on bottom, which move CO2 gas into the leaf

Phloem

The vascular tissue through which food moves in some plants

Xylem

Transports water

spongy mesophyll

layer of loose tissue found beneath the palisade mesophyll in a leaf

bundle sheath

A protective covering around a leaf vein, consisting of one or more cell layers, usually parenchyma.

how would a leaf be classified

organ

what two tissues are found within the vein

Xylem and phloem

what layer in the leaf contains the most chloroplast

mesophyll layer

what two cells are found in the mesophyll layer

Palisade and spongy

what is the column like cell that lies under the epidermis

palisade

what is the function of the stomata

to let carbon dioxide gas into the leaf

what is the overall purpose of photosynthesis

to make energy