a. | In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii. |
b. | Conjoint closed vascular bundles do not possess cambium. |
c. | In open vascular bundles, cambium is present in between xylem and phloem. |
d. | The vascular bundles of dicotyledonous stem possess endarch protoxylem. |
e. | In monocotyledonous root, usually there are more than six xylem bundles present. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyVascular bundles in monocotyledons are considered closed because:
1. | a bundle sheath surrounds each bundle |
2. | cambium is absent |
3. | there are no vessels with perforations |
4. | xylem is surrounded all around by phloem |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyClosed vascular bundles lack:
1. Ground tissue
2. Conjuctive tissue
3. Cambium
4. Pith
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySome vascular bundles are described as open because these:
1. | are not surrounded by pericycle |
2. | are surrounded by pericycle but no endodermis |
3. | are capable of producing secondary xylem and phloem |
4. | possess conjunctive tissue between xylem and phloem |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyFour radial V.B. are found in:
1. Dicot root
2. Monocot root
3. Dicot stem
4. Monocot stem
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology