Q. No.The following T.S. shows the structure of a:
1.
Monocot stem
2.
Dicot stem
3.
Monocot root
4.
Dicot root
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| 1. | Radial and closed | 2. | Conjoint and open |
| 3. | Conjoint and closed | 4. | Radial and open |
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| 1. | Monocot stem | 2. | Dicot stem |
| 3. | Monocot root | 4. | Dicot root |
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1. Cambial ring formed is wavy in the beginning and later becomes circular
2. Cambial ring is completely secondary in origin
3. Periderm originates from the cortex [extra-stelar]
4. Lenticels on periderm are not very prominent
1. Bulliform cells
2. Hydathodes
3. Lenticels
4. Albuminous cells
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1. Cork
2. Secondary phloem
3. Secondary cortex
4. Vascular cambium
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1. Phellem
2. Phellogen
3. Phelloderm
4. Periderm
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| 1. | outer cells differentiate into cork or phelloderm and inner cells differentiate into secondary cortex or phellem |
| 2. | inner cells differentiate into cork or phelloderm and outer cells differentiate into secondary cortex or phellem |
| 3. | outer cells differentiate into cork or phellem and inner cells differentiate into secondary cortex or phelloderm |
| 4. | inner cells differentiate into cork or phellem and outer cells differentiate into secondary cortex or phelloderm |
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| 1. pith meristem | 2. cork cambium |
| 3. cortex cambium | 4. vascular cambium |
1. Deposition of organic compounds leading to dark brown color
2. Present in innermost or central layers of the stem
3. Dead elements with lignified walls
4. Conducts water and minerals
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