Question

The only plant cells without nucleus among the following are
A) Cambium cell
B) Xylem vessels elements
C) Root hairs
D) Companion cells

Answer 1

Plant cells are defined as the basic unit of living organisms belonging to the Kingdom Plantae. These are eukaryotic cells showing the presence of a true nucleus and cellular organelles.

Complete answer:

Option A:- A cambium cell in plants is defined as a tissue layer providing partially undifferentiated cells which are prerequisite for the growth of the plants. These cells are present amidst both the xylem and phloem. They show no true nucleus. Therefore, this is the correct option.
Option B:- A vessel element or as it is known vessel member, is defined as one of the cell types present in the xylem or the water conducting plant tissue. These are typically present in the flowering plants however, absent in most gymnosperms like conifers. They show the presence of a true nucleus. Therefore, this is the incorrect option.
Option C:- Root hairs are long and penetrating structures in between the soil particles which are responsible for preventing the bacterial organism from entering the plant cells. Therefore, this is the incorrect option.
Option D:- Companion cells are peculiarly found inside the phloem of the flowering plants. Every companion cell is closely associated with the sieve element. Companion cells show the true nucleus. Therefore, this is the incorrect option.
Thus, the correct answer for the given question is Option (A) Cambium cells.
Note: The nucleus of the plant cell is responsible for the storage of the hereditary information of the cell. It is responsible for coordinating the cellular activities such as growth, intermediary metabolism, and protein synthesis.