Which of the following plant nutrients is supplied from air?
Carbon
Plants need 16 essential nutrients. Of these, only carbon, hydrogen and oxygen are non-mineral nutrients, and carbon is taken directly from the air as carbon dioxide (CO2).
During photosynthesis, leaves absorb atmospheric CO2 through the stomata, and the carbon in it is fixed into glucose and other organic compounds. This makes carbon the plant nutrient that is supplied from the air.
Iron is a micronutrient absorbed from the soil by the roots, not from the air. Nitrogen, although abundant in the atmosphere as N2, cannot be used directly by most plants; they take it up from the soil as nitrate or ammonium ions (after nitrogen fixation), so it is treated as a soil-supplied nutrient. Hydrogen is obtained from water (H2O) absorbed by the roots, not from the air.
Similar Questions
Which of the following statements is/are correct regarding vegetative propagation?
Statement A: Root, stem and leaves develop into new plants under appropriate conditions.
Statement B: Vegetative propagation is used in sugarcane, roses and grapes.
The parenchyma cells in plants are:
Which of the following options best describes a component of a flower's reproductive system?
Complete the analogy.
Meristematic Tissue : Dividing capacity :: Simple Permanent Tissue : _________
During a histological examination of a plant’s leaf stalk, elongated cells with irregularly thickened corners and very little intercellular space are observed. Which simple permanent tissue is present and what is its primary function in this region?
In geotropism, what does gravity act as?
How do plants excrete their waste products?
Complete the analogy. Xylem : Water Transport :: Phloem : ______.
In a habitat recently affected by drought, which feature would most likely allow gymnosperms to persist when other plants fail?
Since plants prepare their own food using sunlight, they do not require a digestive organ like a stomach. Instead, they possess tissues specialized for ____.
Important Questions from Botany
Which of the following is a type of nutrition?
I. Heterotrophic
II. Autotrophic
Which of the following does NOT form an essential part of the process of photosynthesis?
Part of N 2cycle that is opposed to N 2fixation is:
Which among the following is the reproductive part of a plant?
Fibres (Adventitious) roots are found in :
