Question

When we peel the skin of a potato tuber, we remove

• A. Sapwood
• B. Epidermis
• C. Cuticle
• D. Periderm

Answer 1

The correct option is D Periderm

Periderm

Phellogen, Phellem, Phelloderm all together are called periderm. During the secondary growth epidermis is replaced by the periderm due to the high activity of cambium.

Epidermis

Epidermis is the outermost layer of the plant tissue made up of a single layer of parenchymatous cells.

Cuticle

Cuticle is a thick waxy coating present on epidermis. It prevents water loss from the leaves.

Sapwood

Sapwood is the region of the stem peripheral to the secondary xylem.

Skin of a potato tuber

Due to the activity of cambium, periderm (cork, cork cambium, secondary cortex) replaces epidermis. When we peel the skin of a potato tuber, we remove its periderm.

Final answer: Option a. Periderm.