STD 11 - 13. Plant growth and development — BIOLOGY STD 11 Science — Question

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Growth, at cellular level, is principally a consequence of increase in the amount of protoplasm. Since, increase in protoplasm is difficult to measure directly, one generally measures some quantity which is more or less proportional to it. Growth is, therefore, measured by a variety of parameters some of which are; increase in fresh weight, dry weight, length, area, volume and cell number