Title MINERAL NUTRITION.pdf ✅

NEET : Biology [ 74 ] www.allendigital.in  Digital INTRODUCTION TO SOIL AS RESERVOIR OF ESSENTIAL ELEMENTS 1. Which of the following group of elements is not essential for a normal plant ? (1) K, Ca, Mg (2) Fe, Zn, Mn, B (3) Pb, I, Na (4) Mg, Fe, Mo 2. Hydroponics is a technique in which plants are grown in :- (1) Green house (2) Water saturated sand (3) Balanced nutrient solution (4) Purified distilled water 3. For chlorophyll formation a plant needs :- (1) Fe, Ca & light (2) Fe, Mg & Light (3) Ca, K & light (4) Mn & Cu 4. Brown heart rot of beets is due to deficiency of- (1) B (2) P (3) Mg (4) Mo 5. Die back disease in citrus is due to deficiency of:- (1) Mo (2) B (3) Cu (4) Zn 6. Protoplasmic elements are :- (1) C, H, O, P, N, S (2) C, H,O, Fe, N (3) N, S, Fe, P, K (4) Fe, Mg, Ca, N, P 7. Which element is not considered as macronutrient ? (1) Mg (2) Ca (3) Mn (4) P 8. The element which can not be placed along with micronutrients :- (1) Mn (2) Mo (3) Cu (4) Ca 9. The amino acid having S in its composition is- (1) Methionine (2) Cysteine (3) Both (1) & (2) (4) Glutamic acid 10. The group of mineral nutrients known as frame work elements :- (1) N, S, P (2) C, H, O (3) Mg, Fe, Zn (4) Zn, Mn, Cu 11. Which element essential for stability of chromosome structure ? (1) Zn (2) Ca (3) Mo (4) Fe 12. Which element is required in comparatively less quantity for the growth of plant ? (1) Zn (2) N (3) P (4) Ca 13. Which mineral nutrients are called critical element for crops ? (1) N, P, K (2) C, H, O (3) N, S, Mg (4) K, Ca, Fe 14. Which is most common free ion present in a cell? (1) P (2) K (3) Fe (4) B 15. Which element related with Khaira disease of Paddy & auxin synthesis ? (1) Fe (2) Zn (3) B (4) Cu 16. Plants absorb nitrogen mainly in the form of:– (1) NO2 – (2) NO3 – (3) N  N (4) HNO2 17. The most abundant element present in the plants is – (1) Iron (2) Carbon (3) Nitrogen (4) Manganese 18. Which is essential for nitrogen metabolism? (1) B (2) Mo (3) Cu (4) Mg 19. The major portion of the dry weight of plants comprises of :- (1) Nitrogen, phosphorus and potassium (2) Calcium, magnesium and sulphur (3) Carbon, nitrogen and hydrogen (4) Carbon, hydrogen and oxygen 20. Gray speck of Oat are caused by deficiency of: (1) Cu (2) Zn (3) Mn (4) Fe Exercise - I
Mineral Nutrition  Digital www.allendigital.in [ 75 ] 21. Which of the following element is most mobile in plant? (1) Calcium (2) Nitrogen (3) Carbon (4) Magnesium 22. Which of the following is a part of cytochrome? (1) Mg (2) Zn (3) Fe (4) Ca 23. The mineral present in middle lamella is :- (1) Na (2) Ca (3) K (4) Mn 24. Which of the following is a trace element? (1) S (2) Mg (3) Cu (4) Ca 25. In plant metabolism phosphorus play a major role to :- (1) Evolve oxygen during photosynthesis (2) Create aerobic condition (3) Generate metabolic energy (4) Evolve carbon dioxide during respiration 26. Chlorosis is caued due to deiciency of :- (1) Mg (2) Ca (3) B (4) Cl 27. The mineral nutrient mainly concerning with apical meristematic activity, is :- (1) B (2) Ca (3) N (4) S 28. Which of the following does NPK denote? (1) Nitrogen, Potassium, Kinetin (2) Nitrogen, Protein, Kinetin (3) Nitrogen, Protein, Potassium (4) Nitrogen, Phosphorus, Potassium NITROGEN METABOLISM 29. During the formation of amides from amino acids:- (1) COOH part of acid is replaced by NH2 (2) NH2 part of acid is replaced by COOH (3) OH part of acid group is replaced by NH2 (4) NH2 part of acid is replaced by OH 30. Choose the correct symbol for the above blanks respectively:- (1) 1 2 || || R C COO , R C COO O O − − − − − − (2) 1 1 || || R C COO , R C COO O O − − − − − − (3) 2 1 || || R C COO , R C COO O O − − − − − − (4) 2 2 || || R C COO , R C COO O O − − − − − − 31. The figure below shows three steps (A, B, C) of development of root nodules in soyabean. Select the option giving correct identification together with what it represents ? (1) A–Mature nodule complete with vascular tissues (2) C–Infection thread carries the bacteria to the cortex (3) B–Release of excess bacteria from root nodules (4) A–Root hairs absorb leghaemoglobin from the soil 32. In root nodules of legumes, leghaemoglobin is important because it :- (1) acts as a catalyst in transamination (2) transports oxygen to the root nodule (3) provide energy to the nitrogen fixing bacteria (4) acts as an oxygen scavenger 33. Generally plants absorb nitrogen in the form of :– (1) NO2 – (2) NO3 – (3) N2 (4) HNO2 R1–C–COO– +   + H NH3 + R2–C–COO– H NH3 + (A) (B) (C)
NEET : Biology [ 76 ] www.allendigital.in  Digital 34. Which one of the following options give the correct match of nitrogen fixing organisms with their types (A, B, C) ? A Free living aerobic B Free living anaerobic C Symbiotic (1) Rhodospirillum Rhizobium Azotobacter (2) Rhizobium Azotobacter Rhodospirillum (3) Rhodospirillum Azotobacter Rhizobium (4) Azotobacter Rhodospirillum Rhizobium 35. The bacteria which convert nitrate in to molecular nitrogen are called : (1) Nitrifying bacteria (2) Methanobacteria (3) Diazotrophic bacteria (4) Denitrifying bacteria EXERCISE-I (Conceptual Questions) ANSWER KEY Question 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Answer 3 3 2 1 3 1 3 4 3 2 2 1 1 2 2 Question 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Answer 2 2 2 4 3 2 3 2 3 3 1 2 4 3 3 Question 31 32 33 34 35 Answer 2 4 2 4 4
Mineral Nutrition  Digital www.allendigital.in [ 77 ] AIPMT 2007 1. A plant requires magnesium for :- (1) Cell wall development (2) Holding cells together (3) Protein synthesis (4) Chlorophyll synthesis 2. Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism? (1) Cicer arietinum (2) Casuarina equisetifolia (3) Crotalaria juncea (4) Cycas revoluta 3. About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and :- (1) Calcium and phosphorus (2) Phosphorus and sulphur (3) Sulphur and magnesium (4) Magnesium and sodium 4. Which one of the following elements is not an essential micronutrient for plant growth? (1) Ca (2) Mn (3) Zn (4) Cu AIPMT 2008 5. Nitrogen flxation in root nodules of Alnus is brought about by :- (1) Frankia (2) Azorhizobium (3) Bradyrhizobium (4) Clostridium AIPMT 2009 6. Manganese is required in :- (1) Plant cell wall formation (2) Photolysis of water during photosynthesis (3) Chlorophyll synthesis (4) Nucleic acid synthesis 7. Which of the following is a symbiotic nitrogen fixer? (1) Azotobacter (2) Frankia (3) Azolla (4) Glomus AIPMT Pre-2010 8. An element playing important role in nitrogen fixation is :- (1) Molybdenum (2) Copper (3) Manganese (4) Zinc 9. Which one of the following is not a micronutrient? (1) Molybdenum (2) Magnesium (3) Zinc (4) Boron 10. One of the free-living, anaerobic nitrogen - fixer is :- (1) Beijernickia (2) Rhodospirillum (3) Rhizobium (4) Azotobacter 11. The common nitrogen - fixer in paddy fields is:- (1) Rhizobium (2) Azospirillum (3) Oscillatoria (4) Frankia AIPMT Mains-2010 12. Study the cycle shown below and select the option which gives correct words for the all the four blanks A, B, C and D. :- Exercise - II (Previous Year Questions) AIPMT/NEET Understanding Biological N2 fixation Industrial N2 fixation Electrical N2 fixation A NH3 NO2 – NO3 – Soil 'N' Pool B (Uptake) Decaying biomass C D Atmospheric N2