The only plant cells without nucleus among the following area)Cambium cellsb)Xylem vessels elementsc)Root hairsd)Companion cellsCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Xylem vessel elements

Answer

Xylem vessel elements are made of sclerenchyma which implies it is a dead tissue , and dead tissue don't have nucleus.

Answer

Xylem vessels are  the only plant cells with out nucleus

Answer

The ans is xylem vessels elements. Three of them are dead while sieve tubes are not considered as completely dead because companion cells share their nucleus with the minute pores present in between them(through cytoplasmic streaming)

Answer

Xylem vessels cells r dead so these r devoid of nucleus

Answer

The only plant cells without a nucleus among the following are Xylem vessels elements.

Explanation:

Plant Cells:
Plant cells are the basic structural and functional units of plants. They have various specialized structures and organelles that perform specific functions. One of the most important organelles in a cell is the nucleus, which contains the genetic material (DNA) and controls the cell's activities.

Nucleus:
The nucleus is a membrane-bound organelle that houses the genetic material of a cell. It controls all the cellular activities and is responsible for cell division, growth, and development.

Plant Tissues:
Plant cells are organized into tissues, which are groups of cells that work together to perform specific functions. There are different types of plant tissues, including meristematic tissue, permanent tissue, and vascular tissue.

Xylem Vessels:
Xylem is a type of vascular tissue responsible for the transport of water and minerals from the roots to the other parts of the plant. It consists of various types of cells, including xylem vessels.

Function of Xylem Vessels:
Xylem vessels are long, tubular structures made up of dead cells. They provide structural support to the plant and allow the upward movement of water and minerals through capillary action. These vessels are interconnected, forming a continuous network throughout the plant.

Lack of Nucleus in Xylem Vessels:
Unlike other plant cells, xylem vessels lack a nucleus. During their development, these cells undergo programmed cell death (apoptosis) and lose their nucleus. This allows for the formation of long, hollow tubes that facilitate efficient water transport.

Importance of Xylem Vessels:
Xylem vessels play a crucial role in maintaining the water balance and providing mechanical support to plants. They are responsible for the phenomenon of transpiration, where water is lost through the stomata in leaves, creating a negative pressure that pulls water from the roots.

In conclusion, among the given options, xylem vessels are the only plant cells that lack a nucleus. This unique characteristic allows for their specialized function in water and mineral transport within plants.

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