Column I | Column II | ||
A. | Dicot stem | P. | Vascular bundles are arranged in a ring |
B. | Monocot stem | Q. | Pith is small or inconspicuous |
C. | Dicot root | R. | Vascular bundles are many and scattered in the ground tissue with no definite arrangement. |
D. | Monocot root | S. | Pith is large and well developed |
A | B | C | D | |
1. | Q | S | P | R |
2. | S | Q | R | P |
3. | P | R | Q | S |
4. | R | P | S | Q |
1. | Hypodermis | Sclerenchymatous |
2. | Endodermis | Starch sheath |
3. | Medullary rays | Parenchyma cells |
4. | Protoxylem | Endarch |
1. | A - Adaxial epidermis | 2. | B - Phloem |
3. | C - Mesophyll | 4. | D - Abaxial epidermis |
I: | is constituted by some cells ‘left behind’ from shoot apical meristem during the formation of leaves and elongation of stems. |
II: | is present in the axils of leaves and is capable of forming a branch or a flower. |
Character | Dicot[Dorsiventral] | Monocot [Isobilateral] | |
1. | Presence of stomata | More on adaxial epidermis | More on abaxial epidermis |
2. | Mesophyll | Differentiated into palisade and spongy parenchyma | Not differentiated into palisade and spongy parenchyma |
3. | Venation | Mostly reticulate | Mostly parallel |
4. | Size of vascular bundle | Dependent on the size of veins | Near similar size except in main veins |
1. | wide variations in size of vascular bundles in the main veins |
2. | wide variations in size of vascular bundles except in the main veins |
3. | near similar size of vascular bundles in the main veins |
4. | near similar size of vascular bundles except in the main veins |
1. | Monocot stem | 2. | Dicot stem |
3. | Monocot root | 4. | Dicot root |
1. | Monocot stem | 2. | Dicot stem |
3. | Monocot root | 4. | Dicot root |
I: | forms the outer-most covering of the whole plant body. |
II: | comprises epidermal cells, stomata and the epidermal appendages – the trichomes and hairs. |
III: | is usually multi-layered. |
IV: | has parenchymatous cells without a vacuole. |