Assertion (A): | Growth, at a cellular level, is measured by a variety of parameters such as increase in fresh weight, dry weight, length, area, volume and cell number. |
Reason (R): | Such parameters are more or less proportional to the increase in protoplasm which is primarily responsible for growth at cellular level. |
1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
3. | (A) is True but (R) is False. |
4. | Both (A) and (R) are False. |
Plant growth is generally indeterminate because of:
1. Phenotypic plasticity
2. Geometrical growth shown by all organs
3. Presence of meristems
4. Terminally differentiated cells
If we plot the parameter of growth against time for a living organism growing in a natural environment, the shaped of the curve is expected to be:
1. | Linear | 2. | Rectangular hyperbola |
3. | Sigmoid | 4. | Bell shaped |