Introduction to Growth and Development in plants

Introduction to Growth and Development in plants.

P ositive and Irreversible increase in size over a period of time. A lways accompanied by metabolism. Expense of energy.

Measurement of Growth (inc in protoplasmic content).

Cell division/ Cell formation/ Meristem phase Number of cells increases Cells are rich in protoplasm, conspicuous nuclei, thin and primary cell wall and abundant plasmodesmatal connection. Cell elongation/ Cell enlargement phase Size of cell increases Increase in size of vacuoles, turgar pressure. Cell maturation / Cell maturation/ differentiation phase Thickening of cell wall and modification in protoplasm Qualitative changes Maturation of tissues.

Image result for phases of plant growth in root zone.