Question

In the dicot stem, cork cambium is first derived from
A. Cortex
B. Phellogen
C. Phelloderm
D. Pericycle

Answer 1

Hint: The multicellular stem hairs found in the form of the epidermis with the cuticle and called the dicot system. Pith, vascular strand, cortex endodermis are the internal structures present inside the dicot stem. Cucurbita and sunflower are examples of the dicot stem.

Complete answer:
The production of extra stelar secondary tissue system in the extra stellar lateral meristem in the cork cambium part. It is derived from the ground meristem in which the surrounding the central stele that is present in the cortex ground tissue. In the beneath of the epidermis in which cells present in the 5-7 layers of cortical of the hypodermis part which produces phellogen or cork cambium below the epidermis beneath under the resume of the meristematic activity. Phellogen cannot be produced by pericycle but phellogen is the part in which interstellar tissues are present in the stele.
The phelloderm towards the inner side and phellem towards the periphery sides in the cork cambium or phellogen. It is not a part of the progenitor. But phelloderm and phellem is the product of the cork cambium. The outermost layer of the plural cortices called the cortex. Between the tissues of the roots and stems the cells lying between the epidermis in the plant's cortex. The substances such as tannins, essential oils, latex, and carbohydrates are stored in the cortical cells.
Therefore, the correct option is (A).

Note: It consists of the cork that formed from the cortex layers of the cell. It is transferred to the material through diffusion and responsible for the transportation for the food storage in the form of starch. The endodermis is the innermost layer of the Cortex.