Quiz 4 Flashcards
3 organs of the plant body
Stems
Leaves
Roots
2 major groups of Angiosperms
Eudicots
Monocots
Eudicot
- 250,00 species
• are angiosperms in which the embryo possesses 2 cotyledons (seed leaves)
Monocots
- 60,000 species
• has only one cotyledon (seed leaf)
Comparison of eudicots & monocots
- root
- veins
- flower parts
- pattern of vascular bundles
- root xylem / phloem patterns
Dicots
- taproot
- net like veins
- flower parts in multiples of 4 or 5
- ringed vascular bundles around outer part of stem
- root phloem between xylem arms
Monocot
- fibrous root
- parallel veins
- flower parts in multiples of 3
- vascular bundles throughout stem
- root xylem / phloem in a ring
Primary growth (4)
= Elongation of plant organs
• root, stems, and leaves
• all plants
• produces primary tissues ( from SAM & RAM)
Primary Tissues
- primary xylem
- primary phloem
- epidermis
- parenchyma
- collenchyma
- sclerenchyma
Primary Xylem
Vascular/conducting tissues - water and minerals
Primary Phloem
Vascular/conducting tissues - food and solutes
Epidermis
Dermal (outer most)tissue - protection
Parenchyma (3)
Most abundant type - storage
part of cortex/pith
Collenchyma
Protection/support of plant body organs - cortex
Sclerenchyma
Protection/support of non-elongating organs - cortex
Secondary Growth (4)
= Expansion of plant organs (increased in diameter)
- roots and stems (NO LEAVES)
- NOT ALL PLANTS
- produce secondary tissues (Woody tissues)
Periderm
Outer bark