Root tip, stem tip (elongation)

The base of the internodes of grass plants. Onions, leeks (stretched)

Around the plant body, injured, vascular cambium, cork cambium (naked seeds, woody dicotyledons) (thickened)

The most advanced part of the growth point is composed of embryonic cells.

Primary meristem derivation (dividing while Differentiation), divided into proepidermis (epidermis), procambium (vascular column), and basic meristem (epidermis)

Parenchyma cell transformation, cork cambium, interfascicular cambium.

Epidermal cells, guard cells and accessory cells of the stomatal apparatus, epidermal hairs (primary)

Cork layer, cork cambium layer, cork inner layer (secondary)

Epidermal cells and root hairs in the root hair zone

Mesophyll cells, containing large amounts of chlorophyll

Some parenchyma cells disintegrate into cavities, and the intercellular spaces are very developed

Cell wall intrusions (short-distance transport)

The primary wall is unevenly thickened, contains chloroplasts = young stems, and participates in the formation of cork cambium = stems

The secondary wall thickens and becomes lignified (dead) (stone, fiber)

catheter

Tracheid

Sieve tube

companion cell

Sieve cells

glands, drains

Secretion (dissolution, rupture), milk ducts, resin ducts