Question

The collateral and open type of vascular bundle with endarch xylem strand is usually found in

• A. ( monocot stem )
• B. ( dicot stem )
• C. ( monocot root )
• D. ( dicot root )

Hint:

When studying plant anatomy, note that the presence of cambium is a key indicator of the potential for secondary growth, mainly found in dicotyledonous plants.

Answer 1

The Correct Option is B

Vascular bundles are arrangements of xylem and phloem in plant stems and roots. The collateral and open type of vascular bundle, characterized by the presence of xylem on one side and phloem on the other, separated by cambium (hence "open"), is typical in dicot stems. Characteristics of Vascular Bundles in Dicot Stems: Collateral: Xylem and phloem are arranged side by side, with xylem typically facing the pith (inside) and phloem facing the periphery. Open: Contains cambium between xylem and phloem, allowing for secondary growth. Endarch: The arrangement in which the newer xylem is towards the center and older xylem towards the periphery, typical of stems above ground. Conclusion:
Explanation: This type of vascular bundle supports secondary growth, which is characteristic of dicots, allowing these plants to develop thicker woody stems necessary for supporting larger plant structures.