Q12 / 180 · AIIMS 2018 (27 May) · Botany

Vessels in xylem are found in

  • A
    all angiosperms and gymnosperms
  • Correct answer
    B
    most of angiosperms and few gymnosperms
  • C
    few angiosperms, all gymnosperms and some pteridophytes
  • D
    all pteridophytes.

Solution

Vessels occur in the wood (both primary and secondary xylem) of almost all angiosperms. But in some angiosperms like Dracaena, Yucca etc., they are absent. Vessels are also absent in the wood of most gymnosperms (except Gnetales) and pteridophytes.

Hence, the correct answer is option: 'B'.

Relevant Questions