Simulation · Biology · Class 11
Key out a section
From the lesson Monocot stem in Anatomy of Flowering Plants. Change the values and watch what happens.
Key out a sectionBiology · Class 11
The idea behind it
NCERT §6.2.4, Figure 6.4
- Hypodermis is made of sclerenchyma, not collenchyma as in the dicot stem.
- Vascular bundles are many and scattered through the ground tissue instead of forming a ring.
- Each bundle is wrapped in a sclerenchymatous bundle sheath.
- Bundles are conjoint and closed: there is no cambium.
- Bundles near the edge are generally smaller than those near the centre.
- Phloem parenchyma is absent, and the bundles contain water-containing cavities.
- The bundles sit in a large, conspicuous ground tissue of parenchyma that fills the stem.
- Identification key: scattered, conjoint, closed bundles with sclerenchyma sheaths and no phloem parenchyma mean a monocot stem.