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Online Mock Tests
Chapters
1: Living World
2: Plant Kingdom
UNIT II : Plant Morphology and Taxonomy of Angiosperm
3: Vegetative Morphology
4: Reproductive Morphology
5: Taxonomy and Systematic Botany
UNIT III : Cell biology and Biomolecules
6: Cell: The Unit of Life
7: Cell Cycle
8: Biomolecules
UNIT IV : Plant Anatomy (Structural Organisation)
9: Tissue and Tissue System
10: Secondary Growth
UNIT V : Plant Physiology (Functional Organisation)
11: Transport in plants
12: Mineral Nutrition
13: Photosynthesis
14: Respiration
▶ 15: Plant Growth and Development
![Samacheer Kalvi solutions for Botany [English] Class 11 TN Board chapter 15 - Plant Growth and Development - Shaalaa.com](/images/botany-english-class-11-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for 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 Botany [English] Class 11 TN Board.
Samacheer Kalvi solutions for Botany [English] Class 11 TN Board 15 Plant Growth and Development Evaluation [Page 204]
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
In unisexual plants, sex can be changed by the application of ____________.
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.
What are the parameters used to measure growth of plants?
What is plasticity?
Write the physiological effects of Cytokinins.
Describe the mechanism of photoperiodic induction of flowering.
Give a brief account on Programmed Cell Death (PCD).
What are the physiological effects of plants facing drought conditions?
Explain the mechanism of biotic stress.
Solutions for 15: Plant Growth and Development
Samacheer Kalvi solutions for Botany [English] Class 11 TN Board chapter 15 - Plant Growth and Development
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Concepts covered in Botany [English] Class 11 TN Board chapter 15 Plant Growth and Development are Characteristics of Growth Regulators, Plant Growth Regulators, Plant Movements, Photoperiodism, Vernalization (Yarovization), Formation of Seed and Fruit, Senescence, Stress Physiology.
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