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Quiz 5
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Q.1
Element present in middle lamella is ... ... [ JKCMEE 2004]
0%
a) Zn
0%
b) Cu
0%
c) Ca
0%
d) K
Explanation
Answer : (c)
Q.2
Micronutrients are needed in amounts ... ...[ AMU 2010]
0%
a) 8 m moles/kg dry matter
0%
b) 18 m mole/kg dry matter
0%
c) 25 m mole/kg dry matter
0%
d) 30 m mole/kg dry matter
Explanation
Answer : (a)
Q.3
Plants need one of the following for ATP formation .... .... [ AFMC 2000 ]
0%
a) N, P
0%
b) N, Cu
0%
c) N, Ca
0%
d) K
Explanation
Answer : (a)
Q.4
Which is not a free living nitrogen fixing bacterium ... .... [ HPPPMT 2012]
0%
a) Azotobacter
0%
b) Rhizobium
0%
c) Bacillus
0%
d) Rhodospirillum
Explanation
Answer : (b)
Q.5
Organic compounds invariably contain ... ..... [ MPPMT 1996]
0%
a) Phosphorus
0%
b) Sulphur
0%
c) Magnesium
0%
d) Carbon
Explanation
Answer : (d)
Q.6
Chlorosis results from deficiency of ... ...
0%
a) Chlorine
0%
b) Sodium
0%
c) Calcium
0%
d) Magnesium
Explanation
Answer : (d)
Q.7
Which can function as carrier in active ion absorption .... .... [ BHU 1991]
0%
a) Cytochrome
0%
b) Ferredoxin
0%
c) Lecithin
0%
d) Plastoquinone
Explanation
Lecithin functions as a carrier in ion exchange mechanism. The phosphate group in the phosphatide acts as the cation binding site and choline acts as the anion binding site. During transport, ions are picked up by lecithin to form an ion-lecithin-complex. The ions are released on the inner surface of the membrane due to hydrolysis of lecithin by the enzyme lecithinase into phosphatidic acid and choline. Lecithin is resynthesised from these components in the presence of enzyme choline acetylase and choline esterase which requires ATP. Answer : (c)
Q.8
Leghaemoglobin is .... ..... [ AMU 2003]
0%
a) Respiratory pigment supplying oxygen to animal legs
0%
b) haemoglobin of annelids
0%
c) Nitrogen fixing pigment
0%
d) None of the above
Explanation
Leghemoglobin (also leghaemoglobin or legoglobin) is an oxygen carrier and hemoprotein found in the nitrogen-fixing root nodules of leguminous plants Answer : (d)
Q.9
Zn, Cu, Fe and Mo are ... .... [ Pb PMT 2007]
0%
a) Macronutrients
0%
b) Non-essential elements
0%
c) Trace elements
0%
d) None of the above
Explanation
Answer : (c)
Q.10
Plants detoxify heavy metals by means of ... .... [ DPMT 2001]
0%
a) Allelopectins
0%
b) Abscisic acid
0%
c) PPhytoalexins
0%
d) Phytochelatins
Explanation
Answer : (d)
Q.11
Which of the following is not a micronutrient ... ...[ CBSE 2010]
0%
a) Magnesium
0%
b) Zinc
0%
c) Boron
0%
d) Molybdenum
Explanation
Answer : (a)
Q.12
Micronutrient absorbed by foliage is ... ....[ AIIMS 1999 ]
0%
a) Zinc
0%
b) Phosphorus
0%
c) Aluminium
0%
d) Boron
Explanation
Answer : (a)
Q.13
Manganese is required for ... .... [ CBSE 2012]
0%
a) Chlorophyll synthesis
0%
b) Plant cell wall formation
0%
c) Photolysis of water in photosynthesis
0%
d) Nucleic acid synthesis
Explanation
Answer : (c)
Q.14
Element playing important role in nitrogen fixation is ... ... [ CBSE 2003]
0%
a) Mn
0%
b) Mo
0%
c) Zn
0%
d) Cu
Explanation
Answer : (b)
Q.15
Reaction of ketoglutaric acid with ammonia to form glutamic acid is ... ... [ Guj CET 2007]
0%
a) Oxidative amination
0%
b) Reductive amination
0%
c) Transamination
0%
d) Ammonification
Explanation
Answer : (b)
Q.16
Zinc is essential for ... ..... [ MPPMT 1992]
0%
a) Stomatal closing
0%
b) Stomatal opening
0%
c) Biosynthesis of IAA
0%
d) Oxidation of carbohydrates
Explanation
Answer : (c)
Q.17
Reservoir of Sulphur is ... ... [ AFMC 2003]
0%
a) Rocks
0%
b) Oceans
0%
c) Atmosphere
0%
d) Lakes
Explanation
Answer : (a)
Q.18
Plants requires two metallic compounds (minerals) for chlorophyll synthesis. they are .... .... [ MPPMT 1991]
0%
a) Fe and Ca
0%
b) Fe and Mg
0%
c) Cu and Ca
0%
d) Ca and K
Explanation
Answer : (b)
Q.19
An element essential as electron carrier is ... ... [ CET Chd 2009]
0%
a) Potassium
0%
b) Zinc
0%
c) Calcium
0%
d) Iron
Explanation
Answer : (d)
Q.20
In plants, nitrate is reduced to ammonia state in two steps. In second step, electrons are donated by .... ...[ kerala 2001]
0%
a) Ferredoxin
0%
b) Nitrate reductase
0%
c) Nitrite reductase
0%
d) Cytochromes b5
Explanation
Answer : (a)
Q.21
Bacteria that convert ammonia to nitrite belong to ... .... [ HPPMT 2007]
0%
a) Nitrobacter
0%
b) Nitrosomonas
0%
c) Pseudomonas
0%
d) Mycobacterium
Explanation
Answer : (b)
Q.22
Permeability of protoplasm is accelerated by ... ... [ AMU 1997]
0%
a) Ca
0%
b) Na
0%
c) P
0%
d) K
Explanation
Answer : (d)
Q.23
Which of the following is appropriate for mass flow hypothesis ... .... [ Guj CET 2009]
0%
a) Large amount of ions are also absorbed along with absorption of water
0%
b) As suction pressure increases, absorption of water increases and along with water, absorption of ions also increases
0%
c) Transpiration pull is responsible for absorption of ions
0%
d) All the above
Explanation
Answer : (d)
Q.24
Role of inorganic nutrients in plant growth and metabolism was first discovered by ... ... [ JIPMER 1996]
0%
a) Knop
0%
b) Woodward
0%
c) De Saussure
0%
d) Steward
Explanation
Answer : (a)
Q.25
Nitrogen fixation by Rhizobium occurs inside .... .... [ AFMC 2011]
0%
c) Foliar association
0%
a) Soil
0%
b) Rhizosphere association
0%
d) Nodulated roots
Explanation
Answer : (d)
Q.26
Which is not a micronutrient? .... ... [ CPMT 1996]
0%
a) P
0%
b) Cu
0%
c) Zn
0%
d) Mo
Explanation
Answer : (a)
Q.27
Number of elements needed for healthy growth and development of plants ... ..[ CET Chd 2003]
0%
a) 16
0%
b) 24
0%
c) 34
0%
d) 10
Explanation
Answer : (a)
Q.28
Plastocyanin contains .... ..... [ CPMT 2003]
0%
a) Mo
0%
b) Fe
0%
c) Cu
0%
d) Zn
Explanation
Answer : (c)
Q.29
Mottled chlorosis occurs due to deficiency of ... ....[ JKCMEE 2007]
0%
a) Nitrogen
0%
b) Phosphorus
0%
c) Potassium
0%
d) Sulphur
Explanation
Answer : (c)
Q.30
First experiments in hydroponics were performed by ... ... [ kerala 2000 ]
0%
a) Sachs
0%
b) Knop
0%
c) Hoagland
0%
d) Hill
Explanation
Answer : (a)
0 h : 0 m : 1 s
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