Vessels are found in:
Correct answer: B. Most of angiosperms and few gymnosperms
- A. All angiosperms and some gymnosperm
- B. Most of angiosperms and few gymnosperms
- C. All angiosperms, all gymnosperms and some pteridophyta
- D. All pteridophyta
Explanation
Vessels are long tubelike structures ideally suited for the conduction of water and solutes. These are made up of a row of cylindrical cells arranged in longitudinal series. The partition walls of these cells are perforated and as such the entire structure becomes tubelike. The region of the wall where perforations occur is known as the perforation plate. Vessels are found in the wood of almost all the angiosperms except certain primitive members of the order ranales (vessels dicots), e.g., Trochodendron, Tetracentron, Drimys, Pseudowintera, etc. Vessels also occur in some pteridophytes, such as Selaginella, and in the members of order Gnetales of gymnosperms (e.g., Genetum, Ephedra, and Welwitschia).
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About Kingdom Plantae
Plants are multicellular, photosynthetic eukaryotes with cellulose cell walls, chloroplasts and large vacuoles. Coverage includes alternation of generations, vascular and non-vascular plants, seedless and seed-producing groups, gymnosperms and angiosperms, and the distinction between monocot and dicot features.
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