Question

Correct sequence of different phases of growth is

• A. Cell division $\to$ Cell differentiation $\to$ Cell elongation
• B. Cell differentiation $\to$ Cell division $\to$ Cell elongation
• C. Cell elongation $\to$ Cell division $\to$ Cell differentiation
• D. Cell division $\to$ Cell elongation $\to$ Cell differentiation

Answer 1

The correct option is D Cell division $\to$ Cell elongation $\to$ Cell differentiation

Growth is an irreversible increase in the size. There are three developmental stages of plant growth namely, cell division or proliferation, cell elongation and cell differentiation. Cell division is the first phase of growth in multicellular plants. Cell division results in increase in the number of cells. In plants, karyokinesis, division of nucleus is followed by cytokinesis, the division of the cytoplasm. Cell elongation gives the proper size to the organ and tissue. During cell elongation, protoplasm, vacuole, etc are formed. Cell differentiation is the last stage of growth. It is seen at cell level, tissue level, organ level and at the level of an organism. The cells differentiate to form different types of tissues that later perform different but specific functions.

Thus, the correct answer is option D.