NCERT Class 11 Chapter 11 Exam Questions & Answers 2024/2025
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NCERT Class 11 Chapter 11
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NCERT Class 11 Chapter 11
NCERT Class 11 Chapter 11 Exam Questions & Answers 2024/2025
development - ANSWERSgrowth and differentiation
growth - ANSWERSirreversible permanent increase in size of an organ or its parts or even of an individual cell
why is plant growth unique - ANSWERSplants retain the capacity for u...
NCERT Class 11 Chapter 11 Exam Questions & Answers 2024/2025
development - ANSWERSgrowth and differentiation
growth - ANSWERSirreversible permanent increase in size of an organ or its parts or even of an individual
cell
why is plant growth unique - ANSWERSplants retain the capacity for unlimited growth throughout their life due to the presence
of meristems at certain locations in their body
open growth - ANSWERSform of growth wherein new cells are always being added to the plant body by the activity of the meristem
what is growth a consequence of at a cellular level - ANSWERSincrease in the amount of
protoplasm
what is growth measured by - ANSWERSincrease in fresh weight, dry weight, length, area, volume and cell number.
single maize root apical meristem - ANSWERS17,500 new cells per hour
cells in a watermelon - ANSWERSincrease in size by upto
3,50,000 times
phases of growth - ANSWERSmeristematic
elongation
maturation meristematic growth - ANSWERSrepresented by constantly dividing cells, both at the root apex and the shoot apex
cells are rich in protoplasm, possess large conspicuous
nuclei
cell walls are primary in nature, thin and cellulosic with abundant
plasmodesmatal connections
phase of elongation - ANSWERSThe cells proximal (just next, away from the tip) to the meristematic zone
represent this phase
characteristics of the cells:
Increased vacuolation, cell enlargement new cell wall deposition
phase of maturation - ANSWERSFurther away from the apex, i.e., more proximal to the phase of elongation, lies the portion of axis which is
undergoing this phase
cells: attain their maximal size in terms of wall thickening and protoplasmic modifications
growth rate - ANSWERSincreased growth per unit time
arithmetic growth - ANSWERSfollowing mitotic cell
division, only one daughter cell continues to divide
while the other differentiates and matures
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