Which of the following statements is not correct? [2023]
Phase of cell elongation of plant cells is characterised by increased vacuolation.
Cells in the meristematic phase of growth exhibit abundant plasmodesmatal connections.
Plant growth is generally determinate.
Plant growth is measurable.
(3)
Plant growth is generally indeterminate, i.e., continued throughout life.
The process of growth is maximum during [2020]
log phase
lag phase
senescence
dormancy
(1)
In most systems, the initial growth is slow i.e., lag phase, and it increases rapidly thereafter – at an exponential rate i.e., log or exponential phase.
Typical growth curve in plants is [2015]
stair-steps shaped
parabolic
sigmoid
linear
(3)
Geometric growth cannot be sustained for long in natural conditions. Limited nutrient availability slows down the growth. It leads to a stationary phase or even a decline. Plotting the growth against time gives a typical sigmoid or S-curve. Sigmoid curve of growth is typical of most organisms in their natural environment including plants. An idealised sigmoid growth curve is shown below:
