Microscopes Flashcards
0
Q
Epidermis (Stems)
A
- Produces waxy cuticle that prevents water loss + provides protection
1
Q
Epidermis (Roots)
A
- Water absorption
- Roots hairs increase surface area
- Active transport of minerals into cells
- Provides protection
2
Q
Cortex
A
- Flow of water from epidermis to stele (root) or between vascular bundles (stem)
- Food storage (starch)
3
Q
Endodermis
A
- Inner layer of cortex
- Thin, selective barrier
- Wall between endodermal cells is waxy, forcing passage through cells into stele
4
Q
Pericycle
A
- Inner layer of stele
- Cells can be meristematic + divide to form branch roots
5
Q
Vascular Cylinder (Stele)
A
- Contain pericycle, xylem, phloem
- In monocots, contains unspecialized pith
6
Q
Xylem
A
- Vessel element and tracheid cells
- Transports water from roots to leaves
7
Q
Phloem
A
- Sieve tube and companion cells
- Transports sugar around plant
8
Q
Vascular Bundle
A
- From root to stem, stele branches into vascular bundles
9
Q
Vascular Cambium
A
- In dicot, lateral meristem in vascular bundle that produce new xylem/phloem, causing stem to grow thicker
10
Q
Fibre Cap
A
- Sclerenchyma support vascular bundle
- Found above phloem in divot stems
11
Q
Stem Pith
A
- Food storage (starch)
- Allows movement of substances between vascular bundles
12
Q
Pith Rays
A
- Thin rays of pith between vascular bundles
- Connect pith and cortex
