In the dicot root, the vascular cambium originates from :
1. Tissue located below the phloem bundles, a portion of pericycle tissue, above the protoxylem
2. Cortical region
3. Parenchyma between endodermis and pericycle
4. Intrafascicular and interfascicular tissue in a ring

 65%
From NCERT
NEET - 2019
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Secondary growth is best observed in
1. Teak and Pine
2. Deodar and Fern
3. Wheat and maiden Hair Fern
4. Sugarcane and Sunflower

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Plants having little or no secondary growth are

1. Grasses 2. Cycads
3. Conifers 4. Deciduous angiosperms
 85%

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The cross-section shown in the given diagram shows the structure of a:

1. Monocot stem 2. Monocot root
3. Dicot root 4. Dicot stem
 63%
From NCERT

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