What process do cells in the tip of a plant’s root undergo to increase in number?

Question

What process do cells in the tip of a plant’s root undergo to increase in number??  
A. Meiosis  
B. Cytokinesis  
C. Fractioning  
D. Mitosis

Accepted Answer

Correct Answer: (D)Mitosis. 
Rationale: Cells in the tip of a plant’s root increase in number by undergoing mitosis.Root tips contain a region called the apical meristem, which is made up of undifferentiated, actively dividing somatic cells. These cells are responsible for primary growth, meaning the increase in length of the root. To achieve this, the cells must divide in a controlled and accurate way so that new cells are genetically identical to the original ones and can continue to function as normal plant cells. This type of division is mitosis, which produces two identical diploid daughter cells from one parent cell. Continuous mitotic division in the root tip allows the root to grow longer, form new tissues, and replace damaged cells.A) MeiosisMeiosis is a type of cell division that occurs only in reproductive cells to produce gametes (such as pollen and ovules in plants). It reduces the chromosome number by half and produces four genetically different haploid cells. Since root tip cells are somatic cells involved in growth and not reproduction, they do not undergo meiosis.B) CytokinesisCytokinesis is the physical division of the cytoplasm that occurs after the nucleus has divided. Although it is an important step in cell division, it is not the main process that increases cell number on its own. Cytokinesis simply completes the division that was initiated by mitosis or meiosis. Without mitosis, cytokinesis would not produce properly formed new cells for growth.C) FractioningFractioning is not a biological process related to cell division or growth. It is not used to describe how cells reproduce or increase in number in living tissues. This option is incorrect and unrelated to root growth.D) MitosisMitosis is the correct process. It is the division of the nucleus in somatic cells that results in two genetically identical daughter cells. In root tips, mitosis occurs continuously in the meristematic tissue, providing new cells for elongation, tissue formation, and repair. This is the fundamental mechanism behind root growth.ConclusionCells in the tip of a plant’s root increase in number through mitosis, which produces identical somatic cells needed for growth and development. Therefore, the correct answer is D) Mitosis.

What process do cells in the tip of a plant’s root undergo to increase in number?

A
Meiosis

B
Cytokinesis

C
Fractioning

D
Mitosis

Cells in the tip of a plant’s root increase in number by undergoing mitosis.

Topic Flashcards

Mini Quiz

Related Questions

What process do cells in the tip of a plant’s root undergo to increase in number?

A Meiosis B Cytokinesis C Fractioning D Mitosis

Cells in the tip of a plant’s root increase in number by undergoing mitosis.

Topic Flashcards

Mini Quiz

Related Questions

A
Meiosis

B
Cytokinesis

C
Fractioning

D
Mitosis