Q.1
Element present in middle lamella is ... ... [ JKCMEE 2004]
  • a) Zn
  • b) Cu
  • c) Ca
  • d) K
Q.2
Micronutrients are needed in amounts ... ...[ AMU 2010]
  • a) 8 m moles/kg dry matter
  • b) 18 m mole/kg dry matter
  • c) 25 m mole/kg dry matter
  • d) 30 m mole/kg dry matter
Q.3
Plants need one of the following for ATP formation .... .... [ AFMC 2000 ]
  • a) N, P
  • b) N, Cu
  • c) N, Ca
  • d) K
Q.4
Which is not a free living nitrogen fixing bacterium ... .... [ HPPPMT 2012]
  • a) Azotobacter
  • b) Rhizobium
  • c) Bacillus
  • d) Rhodospirillum
Q.5
Organic compounds invariably contain ... ..... [ MPPMT 1996]
  • a) Phosphorus
  • b) Sulphur
  • c) Magnesium
  • d) Carbon
Q.6
Chlorosis results from deficiency of ... ...
  • a) Chlorine
  • b) Sodium
  • c) Calcium
  • d) Magnesium
Q.7
Which can function as carrier in active ion absorption .... .... [ BHU 1991]
  • a) Cytochrome
  • b) Ferredoxin
  • c) Lecithin
  • d) Plastoquinone
Q.8
Leghaemoglobin is .... ..... [ AMU 2003]
  • a) Respiratory pigment supplying oxygen to animal legs
  • b) haemoglobin of annelids
  • c) Nitrogen fixing pigment
  • d) None of the above
Q.9
Zn, Cu, Fe and Mo are ... .... [ Pb PMT 2007]
  • a) Macronutrients
  • b) Non-essential elements
  • c) Trace elements
  • d) None of the above
Q.10
Plants detoxify heavy metals by means of ... .... [ DPMT 2001]
  • a) Allelopectins
  • b) Abscisic acid
  • c) PPhytoalexins
  • d) Phytochelatins
Q.11
Which of the following is not a micronutrient ... ...[ CBSE 2010]
  • a) Magnesium
  • b) Zinc
  • c) Boron
  • d) Molybdenum
Q.12
Micronutrient absorbed by foliage is ... ....[ AIIMS 1999 ]
  • a) Zinc
  • b) Phosphorus
  • c) Aluminium
  • d) Boron
Q.13
Manganese is required for ... .... [ CBSE 2012]
  • a) Chlorophyll synthesis
  • b) Plant cell wall formation
  • c) Photolysis of water in photosynthesis
  • d) Nucleic acid synthesis
Q.14
Element playing important role in nitrogen fixation is ... ... [ CBSE 2003]
  • a) Mn
  • b) Mo
  • c) Zn
  • d) Cu
Q.15
Reaction of ketoglutaric acid with ammonia to form glutamic acid is ... ... [ Guj CET 2007]
  • a) Oxidative amination
  • b) Reductive amination
  • c) Transamination
  • d) Ammonification
Q.16
Zinc is essential for ... ..... [ MPPMT 1992]
  • a) Stomatal closing
  • b) Stomatal opening
  • c) Biosynthesis of IAA
  • d) Oxidation of carbohydrates
Q.17
Reservoir of Sulphur is ... ... [ AFMC 2003]
  • a) Rocks
  • b) Oceans
  • c) Atmosphere
  • d) Lakes
Q.18
Plants requires two metallic compounds (minerals) for chlorophyll synthesis. they are .... .... [ MPPMT 1991]
  • a) Fe and Ca
  • b) Fe and Mg
  • c) Cu and Ca
  • d) Ca and K
Q.19
An element essential as electron carrier is ... ... [ CET Chd 2009]
  • a) Potassium
  • b) Zinc
  • c) Calcium
  • d) Iron
Q.20
In plants, nitrate is reduced to ammonia state in two steps. In second step, electrons are donated by .... ...[ kerala 2001]
  • a) Ferredoxin
  • b) Nitrate reductase
  • c) Nitrite reductase
  • d) Cytochromes b5
Q.21
Bacteria that convert ammonia to nitrite belong to ... .... [ HPPMT 2007]
  • a) Nitrobacter
  • b) Nitrosomonas
  • c) Pseudomonas
  • d) Mycobacterium
Q.22
Permeability of protoplasm is accelerated by ... ... [ AMU 1997]
  • a) Ca
  • b) Na
  • c) P
  • d) K
Q.23
Which of the following is appropriate for mass flow hypothesis ... .... [ Guj CET 2009]
  • a) Large amount of ions are also absorbed along with absorption of water
  • b) As suction pressure increases, absorption of water increases and along with water, absorption of ions also increases
  • c) Transpiration pull is responsible for absorption of ions
  • d) All the above
Q.24
Role of inorganic nutrients in plant growth and metabolism was first discovered by ... ... [ JIPMER 1996]
  • a) Knop
  • b) Woodward
  • c) De Saussure
  • d) Steward
Q.25
Nitrogen fixation by Rhizobium occurs inside .... .... [ AFMC 2011]
  • c) Foliar association
  • a) Soil
  • b) Rhizosphere association
  • d) Nodulated roots
Q.26
Which is not a micronutrient? .... ... [ CPMT 1996]
  • a) P
  • b) Cu
  • c) Zn
  • d) Mo
Q.27
Number of elements needed for healthy growth and development of plants ... ..[ CET Chd 2003]
  • a) 16
  • b) 24
  • c) 34
  • d) 10
Q.28
Plastocyanin contains .... ..... [ CPMT 2003]
  • a) Mo
  • b) Fe
  • c) Cu
  • d) Zn
Q.29
Mottled chlorosis occurs due to deficiency of ... ....[ JKCMEE 2007]
  • a) Nitrogen
  • b) Phosphorus
  • c) Potassium
  • d) Sulphur
Q.30
First experiments in hydroponics were performed by ... ... [ kerala 2000 ]
  • a) Sachs
  • b) Knop
  • c) Hoagland
  • d) Hill
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