- 1(current)
Q. No.Read the following statements about the vascular bundles:
Choose the correct answer from the options given below:
| 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. |
| 1. | (a), (c), (d) and (e) only | 2. | (a), (b) and (d) only |
| 3. | (b), (c), (d) and (e) only | 4. | all statements are correct |
Subtopic: Â Vascular Tissue System |
 66%
Level 2: 60%+
NEET - 2022
Hints
Vascular 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 |
Subtopic: Â Vascular Tissue System |
 90%
Level 1: 80%+
NEET - 2015
Hints
Subtopic: Â Vascular Tissue System |
 90%
Level 1: 80%+
AIPMT - 2012
Hints
Some 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 |
Subtopic: Â Vascular Tissue System |
 80%
Level 1: 80%+
AIPMT - 2011
Hints
Subtopic: Â Vascular Tissue System |
Level 4: Below 35%
AIPMT - 2002
Hints
- 1(current)
Q. No.
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