Read the given statements. (i) Mg^(2+) is an activator for ribulose bisphosphate carboxylase-oxygenase. (ii) Micronutrients are required in large quantities. (iii) Zn^(2+) is an activator of alcohol dehydrogenase (iv) Phosphorous is a central metal ion of the chlorophyll molecule. Identify the true and false statements.
Micronutrients and Macronutrients
Micronutrients and macronutrients of plants
Which micronutrient is required in larger amount in comparison to any other micronutrients?
Which of the following is a group of micronutrients for plants?
Which micronutrient is responsible for causing die-back disease in plants?
(a) Moderate decrease of increase on micronutrients causes deficiency and toxicaity symptoms respectively. (b) Excess of manganese causes toxicity of iron calcium and molybdenum. (c ) A macronutrients said to be toxic when present below a critical concentration.
A : Maganese toxicity cause brown spots ,chlorotic veins and inhibintion of calcium translocation to shoot apex. R : Toxic effects may be due to direct excess of micronutrients or its interference in the absorbtion and functioning of other nutrients.
Why were micronutrients later than macro- nutrients? With one example each, mention the physiological role and deficiency disease caused by (i) nitrogen, (ii) phosphorus, (ii) copper, and (iv) iron.
A micronutrient is one which
ALLEN-MINERAL NUTRITION IN PLANTS-Match the column
