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Chapters
Chapter 2: Reproduction in Lower and Higher Animals
Chapter 3: Inheritance and Variation
Chapter 4: Molecular Basis of Inheritance
Chapter 5: Origin and Evolution of Life
Chapter 6: Plant Water Relation
▶ Chapter 7: Plant Growth and Mineral Nutrition
Chapter 8: Respiration and Circulation
Chapter 9: Control and Co-ordination
Chapter 10: Human Health and Diseases
Chapter 11: Enhancement of Food Production
Chapter 12: Biotechnology
Chapter 13: Organisms and Populations
Chapter 14: Ecosystems and Energy Flow
Chapter 15: Biodiversity, Conservation and Environmental Issues
Solutions for Chapter 7: Plant Growth and Mineral Nutrition
Below listed, you can find solutions for Chapter 7 of Maharashtra State Board Balbharati for Biology 12th Standard HSC for Maharashtra State Board.
Balbharati solutions for Biology 12th Standard HSC for Maharashtra State Board Chapter 7 Plant Growth and Mineral Nutrition Exercises [Pages 151 - 152]
Multiple choice question.
Which of the hormones can replace vernalization?
Auxin
Cytokinin
Gibberellins
Ethylene
The principle pathway of water translocation in angiosperms is ______
Sieve cells
Sieve tube elements
Xylem
Xylem and phloem
Multiple choice question.
Abscisic acid controls ______.
cell division
leaf fall and dormancy
shoot elongation
cell elongation and wall formation
Multiple choice question.
Which is employed for the artificial ripening of banana fruits?
Auxin
Ethylene
Cytokinin
Gibberellin
Multiple choice question.
Which of the following is required for stimulation of flowering in the plants?
Adequate oxygen
Definite photoperiod
Adequate water
Water and minerals
Multiple choice question.
For short-day plants, the critical period is
light
dark/ night
UV rays
both light and UV rays
Multiple choice question.
Which of the following is day-neutral plant?
a. Tomato
b. Cotton
c. Sunflower
d. Soybean
Multiple choice question.
Essential macroelements are ____________.
manufactured during photosynthesis
produced by enzymes
absorbed from soil
produced by growth hormones
Multiple choice question.
Function of Zinc is ______.
closing of stomata
biosynthesis of 3-IAA
synthesis of chlorophyll
oxidation of carbohydrates
Multiple choice question.
Necrosis means ______.
yellow spots on the leaves
death of tissue
darkening of green colour in leaves
wilting of leaves
Multiple choice question.
Conversion of nitrates to nitrogen is called ______
ammonification
nitrification
nitrogen fixation
denitrification
Multiple choice question.
How many molecules of ATP are required to fix one molecule of nitrogen?
12
20
6
16
Very Short Answer Question:
Enlist the phases of growth in plants?
Very Short Answer Question:
Give the full form of IAA?
Very Short Answer Question:
What does it mean by ‘open growth’?
Very Short Answer Question:
Which is the plant stress hormone?
Very Short Answer Question:
What is denitrification?
Very Short Answer Question:
Name the bacteria responsible for conversion of nitrite to nitrate.
Very Short Answer Question:
What is role of gibberellin in rosette plants?
Very Short Answer Question:
Define vernalization.
Very Short Answer Question:
Define photoperiodism.
Very Short Answer Question:
What is a grand period of growth?
Short Answer Question:
Write a short note on Differentiation.
Short Answer Question:
Write a short note on Re-differentiation.
Short Answer Question:
Differentiate between Arithmetic and Geometric growth.
Short Answer Question:
Enlist the role and deficiency symptoms of Nitrogen.
Short Answer Question:
Enlist the role and deficiency symptoms of Phosphorus.
Short Answer Question:
Enlist the role and deficiency symptoms of Potassium.
Short Answer Question:
What is short day plant? Give any two examples.
Very Short Answer Question:
Define vernalization.
Short Answer Question:
Give its significance of vernalization.
Long Answer Question:
Explain sigmoid growth curve with the help of diagram.
Long Answer Question:
Describe the types of plants on the basis of photoperiod required, with the help of suitable examples.
Long Answer Question:
Explain biological nitrogen fixation with example.
Solutions for Chapter 7: Plant Growth and Mineral Nutrition
Balbharati solutions for Biology 12th Standard HSC for Maharashtra State Board chapter 7 - Plant Growth and Mineral Nutrition
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Concepts covered in Biology 12th Standard HSC for Maharashtra State Board chapter 7 Plant Growth and Mineral Nutrition are Plant Growth, Phases of Plant Growth, Conditions Necessary for Plant Growth, Plant Growth Rate, Types of Plant Growth, Plant Growth Curve, Differentiation, De-differentiation, Re- Differentiation, Plant Development, Plant Plasticity, Plant Hormones, Types of Plant Hormones: Auxins, Types of Plant Hormones: Gibberellins, Types of Plant Hormones: Cytokinins, Types of Plant Hormones: Ethylene, Types of Plant Hormones: Abscisic Acid (ABA), Photoperiodism, Vernalization (Yarovization), Plant Mineral Nutrition, Nitrogen Cycle.
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