Question

When the vascular cambium is present between the xylem and phloem, then the vascular bundle is called,

• A. Closed
• B. Exarch
• C. Open
• D. Endarch

Answer 1

The Correct Option is C

The correct answer is (C) : Open.

Answer 2

The correct answer is: (C) Open.

The vascular cambium is a layer of undifferentiated cells responsible for secondary growth in plants, particularly in dicotyledons. When the vascular cambium is present between the xylem (which conducts water and minerals) and the phloem (which conducts food), it is capable of producing secondary xylem and secondary phloem.

A vascular bundle with a vascular cambium between the xylem and phloem is called an open vascular bundle. This is because the cambium allows for continuous growth and formation of new tissues, unlike a closed vascular bundle where the cambium is absent, and no secondary growth occurs.

In open vascular bundles, the cambium layer allows the plant to grow thicker and form more xylem and phloem tissue over time, enabling the plant to transport more water, nutrients, and food as it matures.