Question

Vessels and companion cells are characteristics of

• A. Angiosperm
• B. Gymnosperm
• C. Pteridophyta
• D. Fern

Answer 1

The correct option is A Angiosperm

A xylem vessel is a characteristic feature of an angiosperm and help in transportation of water. When it comes to transportation of food, it is the phloem that transports food materials from the leaves to the other parts. Sieve tube elements, companion cells, phloem parenchyma are the different components of the phloem. The sieve tube elements are arranged longitudinally with the companion cells and the pressure gradient in them is maintained by the companion cells. These companion cells are absent in lower plants.

So, the correct answer is 'Angiosperm'