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Chapters
2: Plant Kingdom
3: Vegetative Morphology
4: Reproductive Morphology
5: Taxonomy and Systematic Botany
6: Cell: The Unit of Life
7: Cell Cycle
8: Biomolecules
9: Tissue and Tissue System
10: Secondary Growth
11: Transport in Plants
12: Mineral Nutrition
13: Photosynthesis
14: Respiration
▶ 15: Plant Growth and Development
![Samacheer Kalvi solutions for Biology (Botany) [English] Class 11 TN Board chapter 15 - Plant Growth and Development - Shaalaa.com](/images/biology-botany-english-class-11-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Biology (Botany) [English] Class 11 TN Board chapter 15 - Plant Growth and Development")
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Solutions for Chapter 15: Plant Growth and Development
Below listed, you can find solutions for Chapter 15 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Biology (Botany) [English] Class 11 TN Board.
Samacheer Kalvi solutions for Biology (Botany) [English] Class 11 TN Board 15 Plant Growth and Development Evaluation [Pages 291 - 292]
Select the wrong statement from the following:
Formative phase of the cells retain the capability of cell division.
In elongation phase development of central vacuole takes place.
In maturation phase thickening and differentiation takes place.
In maturation phase, the cells grow further.
If the diameter of the pulley is 6 inches, length of pointer is 10 inches and distance travelled by pointer is 5 inches. Calculate the actual growth in length of plant.
1.5 inches
6 inches
12 inches
30 inches
______ is a powerful growth inhibitor.
Ethanol
Cytokinins
ABA
Auxin
Select the correctly matched one.
| A) Human urine | i) Auxin –B |
| B) Corn gram oil | ii) GA3 |
| C) Fungus | iii) Abscisic acid II |
| D) Herring fish sperm | iv) Kinitin |
| E) Unripe maize grains | v) Auxin A |
| F) Young cotton bolls | vi) Zeatin |
A - iii, B - iv, C - v, D - vi, E - i, F - ii
A - v, B - i, C - ii, D - iv, E - vi, F - iii
A - iii, B - v, C - vi, D - i, E - ii, F - iv
A - ii, B - iii, C - v, D - vi, E - iv, F - i
Seed dormancy allows the plants to ______.
overcome unfavourable climatic conditions
develop healthy seeds
reduce viability
prevent deterioration of seeds
Which one of the following method are used to break the seed dormancy?
Scarification
Impaction
Stratification
All the above.
Write the physiological effects of Cytokinins.
Describe the mechanism of photoperiodic induction of flowering.
Give a brief account on Programmed Cell Death (PCD).
Solutions for 15: Plant Growth and Development
Samacheer Kalvi solutions for Biology (Botany) [English] Class 11 TN Board chapter 15 - Plant Growth and Development
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Concepts covered in Biology (Botany) [English] Class 11 TN Board chapter 15 Plant Growth and Development are Characteristics of Growth Regulators, Photoperiodism, Senescence, Plant Growth Regulators, Formation of Seed and Fruit, Vernalization (Yarovization).
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