Study Material
MINERAL NUTRITION
Very Short Answer Questions
Q2. How do you categorize a particular essential element as a macro or micronutrient?
Q3. Give two examples of essential elements that act as activators for enzymes.
Q4. Name the essential mineral elements that play an important role in photolysis of water.
Q5. Out of the 17 essential elements which elements are called non- mineral essential elements?
Q6. Name two amino acids in which sulphur is present.
Q7. When is an essential element said to be deficient?
Q8. Name two elements whose symptoms of deficiency first appear in younger leaves.
Q9. Explain the role of the pink colour pigment in the root nodule of legume plants. What is it called?
Q10. Which element is regarded as the 17th essential element? Name a disease caused by its deficiency.
Q11. Name the essential elements present in nitrogenase enzyme. What type of essential elements are they?
Q12. Write the balanced equation of nitrogen fixation.
Q13. Name any two essential elements and the deficiency diseases caused by them.
Q1. Explain the steps involved in the formation of root nodule.
Q2. Write in brief how plants synthesize amino acids.
Q3. Explain in brief how plants absorb essential elements.
Q4. Explain the nitrogen cycle, giving relevant examples.
Q1. Who should be credited for initiation of hydroponics?
Q2. Are all the essential elements required by plants mineral elements? Explain.
Q3. Which essential element is needed to activate the enzymes required for CO, fixation?
Q4. Name a cation and an anion that maintain osmotic balance in cells.
Q5. Which element is required for the formation of mitotic spindle?
Q6. What is the role of sulphur in plant life?
Q7. Which microelement is required in more quantity than the other micronutrients?
Q8. Which element is necessary for the synthesis of the chief photosynthetic pigment without being its structural component?
Q9. Which micronutrient necessary for photolysis of water is absorbed by plants in anionic form?
Q10. Which enzyme is activated by the 17th essential element?
Q11. When is an element considered to be toxic?
Q12. Which element when supplied in excess leads to appearance of brown spots surrounded by chlorotic veins?
Q13. Name an anaerobic, free living. photo-heterotrophic nitrogen fixing bacterium.
Q14. Which microorganism produces nitrogen-fixing nodules in Alnus?
Q15. When the cross section of root nodules of ground nut plants are observed under microscope, they appear pinkish. Why?
Q16. Apart from the cortical cells, which other cells are stimulated to divide by the bacteroids inside the root nodules?
Q17. What is the ratio of electrons and protons required for the fixation of atmospheric molecular nitrogen through biological mode?
Q18. What acts as oxygen scavenger in the legume-root nodule combination?
Q19. In what way does aspargine differ from aspartic acid?
Q20. Through which tissue the amino acids are transported inside the plant body?
Q21. Plants like the Pitcher and Venus- fly trap have special nutritional adaptations. Name the essential element and its source for which they show such adaptations.
Q22. Excess Mn in soils leads to deficiency of Ca, Mg and Fe justify.
Q23. What acts as a reservoir of essential elements for plants? By what process is it formed?
Q24. Nitrogen fixation is shown by prokaryotes only. Why not by eukaryotes?