Plant Study
−
Scientific Illustration
−
Diagram showing a detail of a
Cucurbita Stem.
1. Internal Phloem
2. Xylem
3. External Phloem
4. Perivascular Fibers
5. Collenchyma
Phloem: Food-conducting tissue where flow is both upwards and downwards.
Xylem: Water-conducting tissue that allows negative pressure to pull water up from the roots. This pressure is caused by the evaporation of water at leafs surface.
Collenchyma: Elongate cells with thick cell walls that support young growing plants.
