NEET Biology Anatomy of Flowering Plants
Anatomy of Flowering Plants PDF Notes, Important Questions and Synopsis
SYNOPSIS
- Classification of Plant Tissues
- Classification of Tissue System
- Differences between Monocotyledonous Stem and Dicotyledonous Stem:
Monocotyledonous Stem
Dicotyledonous Stem
- Hypodermis is sclerenchymatous.
- Hypodermis is collenchymatous.
- Pith is absent.
- Pith is well-developed.
- Phloem parenchyma is absent.
- Phloem parenchyma is present.
- Vascular bundles are scattered.
- Vascular bundles are arranged in a ring.
- Vascular bundles are conjoint and closed.
- Vascular bundles are conjoint and open.
- Differences between Monocotyledonous Root and Dicotyledonous Root:
Monocotyledonous Root
Dicotyledonous Root
- Pericycle gives rise to lateral roots only.
- Pericycle gives rise to cork cambium, parts of the vascular cambium and lateral roots.
- It has a higher number of xylem and phloem.
- It has a limited number of xylem and phloem.
- The xylem is angular or polygonal.
- The xylem is angular or polygonal.
- The pith is larger and well developed.
- The pith is absent or very small and undeveloped.
- Conjunctive tissue is sclerenchymatous.
- Conjunctive tissue is parenchymatous.
- Xylem is polyarch.
- Xylem is usually tetrarch.
- Differences between Monocotyledonous Leaf and Dicotyledonous Leaf:
Monocotyledonous Leaf
Dicotyledonous Leaf
- Isobilateral
- Dorsiventral
- Stomata equally present on both surfaces.
- Stomata usually present on lower surface.
- Stomata have dumb-bell shaped guard cells.
- Stomata have bean-shaped guard cells.
- Mesophyll is undifferentiated.
- Mesophyll is differentiated into palisade and spongy parenchyma.
- Bulliform cells are present.
- Bulliform cells are absent.
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Increase in the girth or thickness of the plant is called secondary growth.
-
Secondary Growth in a Dicot Stem
-
Secondary Growth in a Dicot Stem
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