Multiple choice

In leaf, xylem lies towards the

  1. lower epidermis

  2. mesophyll

  3. upper epidermis

  4. bundle sheath

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In leaf anatomy, xylem is located towards the upper (adaxial) epidermis, while phloem is towards the lower (abaxial) epidermis. This dorsal-ventral arrangement is called amphistomatic leaf organization. The upper-side position of xylem facilitates efficient water delivery to the photosynthetic mesophyll cells. Bundle sheath surrounds the entire vascular bundle, and mesophyll is the photosynthetic tissue between the epidermal layers.