Question
Biology Question on Anatomy of Dicotyledonous and Monocotyledonous Plants
Stele includes
A
pericycle
B
vascular bundles
C
pith
D
all of these
Answer
all of these
Explanation
Solution
Stele is the fundamental part of the shoot in vascular plants. It mainly consists of tissues derived from procambium. These tissues includes vascular tissue, pith and pericycle. The pericycle forms the outermost boundary of the stele. The word 'stele' is taken from Greek language, which means 'pillar'. In plants, stele is the primary vascular system of plant's stem.
The stele is mainly categorized into two types:
- Protostele - It is characterized by an interior core of xylem surrounded by phloem.
- Siphonostele - In this type, there is a central pith (parenchyma) surrounded by vascular tissues.