Question

In phloem of some plants, there will be some specialised cell meant for the accumulation of tannins, resins, crystals, mucilage, etc. These cells are called

• A. Companion cells
• B. Phloem parenchyma
• C. Sieve elements
• D. Phloem fibre

Answer 1

The correct option is B Phloem parenchyma

Phloem is a complex permanent tissue made up of four different members

1. Sieve tubes are long, the tube-like structure arranged longitudinally and are associated with companion cell and lacks a nucleus.
2. Companion cells are specialized parenchymatous cells that help in maintaining the pressure gradient in sieve tube.
3. Phloem parenchyma is made of elongated, tapering cylindrical cells which have dense cytoplasm and nucleus and stores food material and other substance like resins, latex, and mucilage.
4. Phloem fibers are sclerenchymatous cells and are found in secondary phloem are elongated, unbranched and pointed needle-like.

So the correct option is "Phloem parenchyma".