Q.1
Salt respiration is ... .... [ JKCMEE 2002]
  • a) Linking of ion movement with respiratory chain
  • b) Active increase in respiration during mineral absorption
  • c) Decrease in respiration during salt absorption
  • d) Secretion of salt through respiratory channels
Q.2
Number of essential nutrients needed by plants is ... ... [ JIPMER 2004]
  • a) 5
  • b) 8
  • c) 16
  • d) 4
Q.3
Premature leaf fall is due to deficiency of ... .... [ AFMC 1997]
  • a) Potassium
  • b) Sodium
  • c) Phosphorous
  • d) Zinc
Q.4
Following list includes in nitrogen metabolism. Find out correct sequence of enzyme with respect to their functions a) Nitrate reductase b) Nitrogenase c) Nitrite reductase d) Reductive aminase e) Transaminase
  • a) 2, 5, 4, 1, 3
  • b) 2, 4, 5, 3, 1
  • c) 2, 1, 3, 4, 5
  • d) 2, 1, 3, 5, 4
Q.5
Element responsible for maintaining turgor is ... .... [ BHU 1996]
  • a) K
  • b) Na
  • c) Ca
  • d) Hg
Q.6
Which of the following does not operate in the carrier concept of active absorption of minerals?
  • a) Electron transport
  • b) Contractile protein
  • c) Protein lecithin
  • d) Ascending water stream
Q.7
Mineral absorption occurs ... .... [ AFMC 1993]
  • a) If soil solution is hypotonic
  • b) If soil solution is hypertonic
  • c) Independent of water potential
  • d) Independent of water absorption
Q.8
Which one is required in higher amounts ... ... [ Har PMT 2004]
  • a) Ca2+
  • b) Mg2+
  • c) K+
  • d) Na+
Q.9
On the basis of symptoms of chlorosis in leaves a student inferred that this was due to deficiency of nitrogen. This inference could be correct only if we assume that yellowing of leaves appeared first in ... ...... [ AIIMS 2007]
  • a) Old leaves
  • b) Young leaves
  • c) Young leaves followed by mature leaves
  • d) Mature leaves followed by young leaves
Q.10
Plasma membrane does not have carrier molecules for ... ...[ WB 2008]
  • a) Active transport
  • b) Simple diffusion
  • c) Facilitated diffusion
  • d) Na+ - K+ pump
Q.11
Nitrogen fixing bacterium is ... .... [BHU 2002]
  • a) Frankia
  • b) Acetobacter
  • c) Mycoplasma
  • d) Chlamydia
Q.12
Appearance of brown spots surrounded by chlorotic veins is a toxicity symptom of ... ... [ AMU 2009]
  • a) Mo
  • b) Mn
  • c) Mg
  • d) Zn
Q.13
Plants use Zinc as ... .... [ CBSE 2000 ]
  • a) Zn
  • b) Zn2+
  • c) ZnSO4
  • d) Zn(NO3)2
Q.14
Which of the following shows importance of mineral ion found in middle lamella of plant cells .... .... [ Guj CET 2010]
  • a) Associated with the formation of bipolar spindle during cell division
  • b) Essential for splitting of water during photosynthesis
  • c) Required for absorption and utilisation of calcium
  • d) Maintenance of ribosomal constituents
Q.15
Sulphur is absorbed by plants as ... ..... [ Har PMT
  • a) SO3 from soil
  • b) SO2 from air
  • c) SO4 from soil
  • d) Both b and and c
Q.16
Chlorosis occurs when plants are grown in ... .... [ Manipur 2006]
  • a) Shade
  • b) Strong sunlight
  • c) Fe-free medium
  • d) Dark
Q.17
Major role of phosphorus in plant metabolism is ... .... [ AMU 1998]
  • a) O2 - evolution during photosynthesis
  • b) CO2 - evolution during respiration
  • c) Create anaerobic conditions
  • d) Generate metabolic energy
Q.18
Grey spots of Oat are caused by deficiency of ... ...[ CBSE 2003]
  • a) Cu
  • b) Zn
  • c) Mn
  • d) Fe
Q.19
Which of the following is a micronutrient .... .... [ BHU 1991]
  • a) Mg
  • b) Ca
  • c) Mn/Mo/Cu
  • d) P
Q.20
An anaerobic bacterium capable of nitrogen fixation is ... .... [Odisha 2007]
  • a) Chlorobium
  • b) Rhodospirillum
  • c) Clostridium
  • d) All of the above
Q.21
Match the column ... ..... [ Har PMT 2002 ]
a) N i) Coppery texture of leaf
b) Mg ii) Premature leaf fall
c) Bo iii) Interveinal chlorosis
d) P iv) Mottled chlorosis and necrosis
  • a) a - iv, b - i, c - ii, d - iii
  • b) a - i, b - ii, c - iii, d - iv
  • c) a - iv, b - iii, c - i, d - ii
  • d) a - iv, b - ii, c - i, d - iii
Q.22
Which is wrong ... .... [ CBSE 2012]
  • a) Anabaena and Nostoc are capable of fixing nitrogen in free state
  • b) Root nodule forming nitrogen fixers live as aerobes under free living state
  • c) Phosphorous is constituent of cell membranes, certain nucleic acids and all proteins
  • d) Nitrosomonas and Nitrobacter are chemoautotrophs
Q.23
Movement of minerals in plant root through diffusion is ... ... [ CET Chd 1997]
  • a) Endosmosis
  • b) Osmosis
  • c) Active absorption
  • d) Passive absorption
Q.24
Element essential for uptake and utilization of Ca2+ and membrane function is ... ... [ kerala 2007]
  • a) Boron
  • b) Copper
  • c) Manganese
  • d) Molybdenum
Q.25
Molybdenum is involved in plant metabolism in ... ...[ EAMCET 1996]
  • a) Translocation solutes
  • b) Nitrate reduction
  • c) Tryptophane synthesis
  • d) Ascorbic acid synthesis
Q.26
match the components of columns .... .... [ Guj CET 2010]
Mineral Deficiency Symptoms Importance
a) Potassium i)Leaves turn dark green I)Regulation of stomatal pore
b) Sulphur ii) Accumulation of purple pigment II) Constituent of Chlorophyll
c) Magnesium iii) Wilting and dropping of leaves III) Required for activity of oxidoreductase
d) Copper iv) Old leaves start to die IV) Essential for carboxylase
- -   - - v) Shortening of inter-node V) It is constituent of thiamine
  • a) a-v-II, b-ii-V, c-iii-IV, d-vi-III
  • b) a-v-I, b-ii-V, c-ii-II, d-iii-III
  • c) c-iv-IV, b-iii-I, c-ii-V, d-v-V
  • d) a-iv-II, b-v-I, c-i-V, d-iii-IV
Q.27
Which one is an essential mineral, not constituent of any enzyme but stimulates the activity of many enzymes ... ..... [ JIPMER 2000 ]
  • a) Zn
  • b) Mn
  • c) K
  • d) Mg
Q.28
Plants deficient in zinc, show reduced biosynthesis of growth hormone ... .... [ CBSE 2003]
  • a) Cytokinin
  • b) Auxin
  • c) Ethylene
  • d) Abscisic acid
Q.29
Which of the following is a micronutrient ... ... [ JKCMEE 2011]
  • a) Mg
  • b) Zn
  • c) Ca
  • d) P
Q.30
Nitrogen fixing symbiotic bacteria present in a legume root is .... .... [ Bih PMT 2006]
  • a) Azotobacter
  • b) Rhizobium
  • c) Nitrobacter
  • d) Nitrosomonas
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