Read the different components from I to IV in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.
I. Secondary Cortex 
II. Wood 
III. Secondary phloem 
IV. Phellem 
The correct order is

1. III,IV,II,I

2. I,II,IV,III

3. IV,I,III,II

4. IV,III,I,II

Subtopic:  Dicot Stem |
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You are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will your use to distinguish between the two?

1. Secondary xylem

2. Secondary phloem

3. Protoxylem

4. Cortical cells

Subtopic:  Dicot Stem |
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In barley stem, vascular bundles are

1. open and scattered

2. closed and scattered

3. open and in a ring

4. closed and radial

Subtopic:  Dicot Stem | Monocot Stem |
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Anatomically, fairly old dicotyledonous root is distinguished from the dicotyledonous stem by

1. absence of secondary xylem

2. absence of secondary phloem

3. presence of cortex

4. position of protoxylem

Subtopic:  Anatomy of Root | Dicot Stem |
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