Anatomy of Flowering Plants · Question 79

Vessels are found in:

1. Most of the angiosperms and a few gymnosperms
2. All angiosperms and some gymnosperms
3. All pteridophyta
4. All angiosperms, all gymnosperms and some pteridophyta

Answer

(1) Most of the angiosperms and a few gymnosperms

Solution

As per NCERT, vessels are a characteristic feature of angiosperms, and gymnosperms lack vessels in their xylem.

⇒ Vessels are present in most angiosperms (a few primitive angiosperms are vesselless).

⇒ Among gymnosperms, only a few (the Gnetales, e.g. Gnetum, Ephedra) possess vessels.

∴ Pteridophytes in general and most gymnosperms have only tracheids, so options (3) and (4) are wrong, and option (2) is wrong because not all angiosperms have vessels.

Answer: (1)