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Biology · PYQ NEET UG 2016(2)

हिन्दी

The balloon-shaped structures called tyloses

  1. are linked to the ascent of sap through xylem vessels
  2. originate in the lumen of vessels
  3. characterize the sapwood
  4. are extensions of xylem parenchyma cells into vessels

Correct answer · Option 4

are extensions of xylem parenchyma cells into vessels

Explanation

Tyloses are balloon-like outgrowths of xylem parenchyma cells into the lumen of adjacent xylem vessels, commonly found in heartwood.
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