Question

A shoot from a balsam plant is kept in an eosin solution (pink coloured) for 3 - 4 hours. The pink colour likely to be seen in:

• A. (A) phloem tissue
• B. (B) Cortex
• C. (C) xylem tissue
• D. (D) Endodermis

Answer 1

The correct option is C

(C) xylem tissue

The correct option is C.

Explanation of the correct option:

1. Eosin is pink coloured stain is used to track the movement of water inside the plants.
2. Xylem is responsible for water transportation so xylem elements will be coloured due to stain in this procedure.

Explanation of the incorrect option:

Option A:

1. As phloem is not involved in water transport ,so cell will not stained.

Option B:

1. Cortex is the outer most layer of the stem or root of a plant.
2. It stores food in form of starch.
3. It does not involve in water transportation.

Option D:

1. Endodermis is the central, inner most layer of plant .
2. It separates vascular tissues from cortex.
3. It does not transport water so, cell will not stained.

Final answer: The pink colour likely to be seen in Xylem tissue.