Read the following statements about the vascular bundles: (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 Choose the correct answer from the options given below :

Options

1. none of the following
2. (a), (b), (c) and (d) only
3. (a), (c), (d) and (e) only
4. (a), (b) and (d) only

Correct Answer

none of the following

Explanation

Roots have radial arrangement of xylem and phloem, open vascular bundles have cambium, dicot stems have endarch protoxylem, and closed bundles lack cambium — all correct.

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