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Growth Curve
Growth Curves
1.3
Growth Curves
Types of Plants Based on Life Cycles
Annual Plants
Annual plants
are plants that have only one life cycle for a season or a year.
These plants usually die after produce flowers and fruits.
Examples of annual plants is as shown below:
Biennial Plants
Biennial plants
are plants that ended their life cycle in two years by two growing systems.
First year is the phase of vegetative, which is the growth of leaves and stems structures.
At the second year, the plants produce flowers and fruit.
Examples of biennial plants is:
Tulip plants.
Spinash.
Cabbages.
Perennial Plants
Perennial plants
are the plants which can live longer although after the formation of flowers and fruits.
All the perennial plants are woody plants.
These plants can continue to live as long as do not infected by diseases or destroyed by humans,animals or disasters.
Examples of perennial plants is as shown below:
Growth Curve in Plants
The Growth Curve of Annual Plants
The growth curve is a sigmoid curve.
Stage A: Decreasing dry mass:
Food stored in the cotyledon is used for germination before the leaves emerge to carry out photosynthesis.
Stage B: Increasing dry mass:
The rate of growth increases rapidly. This is because the plant has carried out photosynthesis.
Stage C: Constant dry mass:
The rate of growth is zero.
Plant is matured at this stage.
Stage D: Decreasing dry mass:
Happens slowly because of aging, lower rate of photosynthesis, shedding of leaves and flowers and seed dispersal.
The Growth Curve of Biennial Plants
The growth curve has two sigmoid curves which are combined.
First growth season:
Plants produce leaves, photosynthesis takes place.
Food is stored in tubers.
Second growth season:
The food stored is used to produce flowers and seeds.
The Growth Curve of Perennial Plants
The growth curve is a series of small sigmoid curves.
Every year the growth curve is a sigmoid curve. Growth occurs throughout the lifespan of the plant.
The rate of growth is high during spring and summer. High light intensity increases the rate of photosynthesis.
The rate of growth decreases in winter.
Growth Curves
1.3
Growth Curves
Types of Plants Based on Life Cycles
Annual Plants
Annual plants
are plants that have only one life cycle for a season or a year.
These plants usually die after produce flowers and fruits.
Examples of annual plants is as shown below:
Biennial Plants
Biennial plants
are plants that ended their life cycle in two years by two growing systems.
First year is the phase of vegetative, which is the growth of leaves and stems structures.
At the second year, the plants produce flowers and fruit.
Examples of biennial plants is:
Tulip plants.
Spinash.
Cabbages.
Perennial Plants
Perennial plants
are the plants which can live longer although after the formation of flowers and fruits.
All the perennial plants are woody plants.
These plants can continue to live as long as do not infected by diseases or destroyed by humans,animals or disasters.
Examples of perennial plants is as shown below:
Growth Curve in Plants
The Growth Curve of Annual Plants
The growth curve is a sigmoid curve.
Stage A: Decreasing dry mass:
Food stored in the cotyledon is used for germination before the leaves emerge to carry out photosynthesis.
Stage B: Increasing dry mass:
The rate of growth increases rapidly. This is because the plant has carried out photosynthesis.
Stage C: Constant dry mass:
The rate of growth is zero.
Plant is matured at this stage.
Stage D: Decreasing dry mass:
Happens slowly because of aging, lower rate of photosynthesis, shedding of leaves and flowers and seed dispersal.
The Growth Curve of Biennial Plants
The growth curve has two sigmoid curves which are combined.
First growth season:
Plants produce leaves, photosynthesis takes place.
Food is stored in tubers.
Second growth season:
The food stored is used to produce flowers and seeds.
The Growth Curve of Perennial Plants
The growth curve is a series of small sigmoid curves.
Every year the growth curve is a sigmoid curve. Growth occurs throughout the lifespan of the plant.
The rate of growth is high during spring and summer. High light intensity increases the rate of photosynthesis.
The rate of growth decreases in winter.
Chapter : Plant Tissue Organisation and Growth
Topic : Growth Curve
Form 5
Biology
View all notes for Biology Form 5
Related notes
Organisation of Plant tissue
Meristematic Tissues and Growth
Leaf Structure
Main Organ for Gaseous Exchange
Main Organ for Transpiration
Main Organ for Photosynthesis
Compensation Point
Main Inorganic Nutrients
Organ for Water and Mineral Salts Uptake
Diversity in Plant Nutrition
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