10 Questions
Which organ of the plant is responsible for water and nutrient absorption?
Roots
What factors can influence root growth?
Supply of hormones from the roots
What are the criteria for an element to be considered essential for plant growth?
Needed for the completion of plant's life cycle
What is the role of plant roots in response to variations in nutrient availability?
They exhibit phenotypic plasticity
What is the main function of the essential elements in plant mineral nutrition?
To participate in plant metabolism
Which of the following is NOT a criteria for an element to be considered essential for plant growth?
Deficiency symptoms appear in its absence
What is the main factor that influences root growth?
Supply and form of mineral nutrients
What is the role of plant roots in response to variations in nutrient availability?
To absorb water and nutrients
What can inhibit root growth in plants?
Soil pH below 5
What is the main function of plant roots?
To absorb water and nutrients
Study Notes
Plant Roots and Nutrition
- Roots are responsible for water and nutrient absorption in plants.
Essential Elements for Plant Growth
- An element is considered essential for plant growth if it meets three criteria: • It is necessary for normal plant growth and reproduction. • A plant cannot complete its life cycle without it. • No other element can replace its function.
Factors Influencing Root Growth
- Multiple factors can influence root growth, including: • Nutrient availability • Water availability • Temperature • Light • Oxygen availability • Microorganisms • Genetic factors
Role of Plant Roots
- Plant roots respond to variations in nutrient availability by adapting their growth and morphology.
- The main function of plant roots is to absorb water and minerals from the soil.
- Plant roots also anchor the plant in the soil and store food.
Inhibitors of Root Growth
- Factors that can inhibit root growth include: • Waterlogging • Drought • Salinity • Extreme temperatures • Toxic chemicals • Limited nutrient availability
Test your knowledge on plant mineral nutrition, including essential elements, their roles or functions in plants, deficiency symptoms, and the assimilation of nutrients. Explore the importance of plant roots in water and nutrient absorption and their ability to respond to changes in nutrient availability.
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