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Quiz 4
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Q.1
Salt respiration is ... .... [ JKCMEE 2002]
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a) Linking of ion movement with respiratory chain
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b) Active increase in respiration during mineral absorption
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c) Decrease in respiration during salt absorption
0%
d) Secretion of salt through respiratory channels
Explanation
Answer : (b)
Q.2
Number of essential nutrients needed by plants is ... ... [ JIPMER 2004]
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a) 5
0%
b) 8
0%
c) 16
0%
d) 4
Explanation
Answer : (c)
Q.3
Premature leaf fall is due to deficiency of ... .... [ AFMC 1997]
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a) Potassium
0%
b) Sodium
0%
c) Phosphorous
0%
d) Zinc
Explanation
Answer : (c)
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
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a) 2, 5, 4, 1, 3
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b) 2, 4, 5, 3, 1
0%
c) 2, 1, 3, 4, 5
0%
d) 2, 1, 3, 5, 4
Explanation
Answer : (c)
Q.5
Element responsible for maintaining turgor is ... .... [ BHU 1996]
0%
a) K
0%
b) Na
0%
c) Ca
0%
d) Hg
Explanation
Answer : (a)
Q.6
Which of the following does not operate in the carrier concept of active absorption of minerals?
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a) Electron transport
0%
b) Contractile protein
0%
c) Protein lecithin
0%
d) Ascending water stream
Explanation
Answer : (d)
Q.7
Mineral absorption occurs ... .... [ AFMC 1993]
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a) If soil solution is hypotonic
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b) If soil solution is hypertonic
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c) Independent of water potential
0%
d) Independent of water absorption
Explanation
Answer:(d)
Q.8
Which one is required in higher amounts ... ... [ Har PMT 2004]
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a) Ca2+
0%
b) Mg2+
0%
c) K+
0%
d) Na+
Explanation
Answer : (c)
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]
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a) Old leaves
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b) Young leaves
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c) Young leaves followed by mature leaves
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d) Mature leaves followed by young leaves
Explanation
Answer : (a)
Q.10
Plasma membrane does not have carrier molecules for ... ...[ WB 2008]
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a) Active transport
0%
b) Simple diffusion
0%
c) Facilitated diffusion
0%
d) Na+ - K+ pump
Explanation
Answer : (b)
Q.11
Nitrogen fixing bacterium is ... .... [BHU 2002]
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a) Frankia
0%
b) Acetobacter
0%
c) Mycoplasma
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d) Chlamydia
Explanation
Answer : (a)
Q.12
Appearance of brown spots surrounded by chlorotic veins is a toxicity symptom of ... ... [ AMU 2009]
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a) Mo
0%
b) Mn
0%
c) Mg
0%
d) Zn
Explanation
Answer : (b)
Q.13
Plants use Zinc as ... .... [ CBSE 2000 ]
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a) Zn
0%
b) Zn2+
0%
c) ZnSO4
0%
d) Zn(NO3)2
Explanation
Answer : (b)
Q.14
Which of the following shows importance of mineral ion found in middle lamella of plant cells .... .... [ Guj CET 2010]
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a) Associated with the formation of bipolar spindle during cell division
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b) Essential for splitting of water during photosynthesis
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c) Required for absorption and utilisation of calcium
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d) Maintenance of ribosomal constituents
Explanation
Answer : (a)
Q.15
Sulphur is absorbed by plants as ... ..... [ Har PMT
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a) SO3 from soil
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b) SO2 from air
0%
c) SO4 from soil
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d) Both b and and c
Explanation
Answer : (d)
Q.16
Chlorosis occurs when plants are grown in ... .... [ Manipur 2006]
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a) Shade
0%
b) Strong sunlight
0%
c) Fe-free medium
0%
d) Dark
Explanation
Answer : (c)
Q.17
Major role of phosphorus in plant metabolism is ... .... [ AMU 1998]
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a) O2 - evolution during photosynthesis
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b) CO2 - evolution during respiration
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c) Create anaerobic conditions
0%
d) Generate metabolic energy
Explanation
Answer : (d)
Q.18
Grey spots of Oat are caused by deficiency of ... ...[ CBSE 2003]
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a) Cu
0%
b) Zn
0%
c) Mn
0%
d) Fe
Explanation
Answer : (c)
Q.19
Which of the following is a micronutrient .... .... [ BHU 1991]
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a) Mg
0%
b) Ca
0%
c) Mn/Mo/Cu
0%
d) P
Explanation
Answer : (c)
Q.20
An anaerobic bacterium capable of nitrogen fixation is ... .... [Odisha 2007]
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a) Chlorobium
0%
b) Rhodospirillum
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c) Clostridium
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d) All of the above
Explanation
Reduction of inert atmospheric nitrogen to ammonia by living organisms is called biological nitrogen-fixation. Only certain prokaryotic organisms (some bacteria and cyanobacteria) are capable of fixing Such microbes are called N2 -fixers. These N2 -fixing microbes contain an exclusive enzyme, Nitrogenase that is capable of reducing nitrogen. The nitrogen-fixing microbes could be free-living or symbiotic in nature. Chlorobium, Rhodospirillum and Clostridium are anaerobic, free-living,N2 -fixing bacteria. Answer : (c)
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
0%
a) a - iv, b - i, c - ii, d - iii
0%
b) a - i, b - ii, c - iii, d - iv
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c) a - iv, b - iii, c - i, d - ii
0%
d) a - iv, b - ii, c - i, d - iii
Explanation
Answer : (c)
Q.22
Which is wrong ... .... [ CBSE 2012]
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a) Anabaena and Nostoc are capable of fixing nitrogen in free state
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b) Root nodule forming nitrogen fixers live as aerobes under free living state
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c) Phosphorous is constituent of cell membranes, certain nucleic acids and all proteins
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d) Nitrosomonas and Nitrobacter are chemoautotrophs
Explanation
Answer : (c)
Q.23
Movement of minerals in plant root through diffusion is ... ... [ CET Chd 1997]
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a) Endosmosis
0%
b) Osmosis
0%
c) Active absorption
0%
d) Passive absorption
Explanation
Answer : (d)
Q.24
Element essential for uptake and utilization of Ca2+ and membrane function is ... ... [ kerala 2007]
0%
a) Boron
0%
b) Copper
0%
c) Manganese
0%
d) Molybdenum
Explanation
Answer : (a)
Q.25
Molybdenum is involved in plant metabolism in ... ...[ EAMCET 1996]
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a) Translocation solutes
0%
b) Nitrate reduction
0%
c) Tryptophane synthesis
0%
d) Ascorbic acid synthesis
Explanation
Answer : (b)
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
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a) a-v-II, b-ii-V, c-iii-IV, d-vi-III
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b) a-v-I, b-ii-V, c-ii-II, d-iii-III
0%
c) c-iv-IV, b-iii-I, c-ii-V, d-v-V
0%
d) a-iv-II, b-v-I, c-i-V, d-iii-IV
Explanation
Answer : (b)
Q.27
Which one is an essential mineral, not constituent of any enzyme but stimulates the activity of many enzymes ... ..... [ JIPMER 2000 ]
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a) Zn
0%
b) Mn
0%
c) K
0%
d) Mg
Explanation
Answer : (c)
Q.28
Plants deficient in zinc, show reduced biosynthesis of growth hormone ... .... [ CBSE 2003]
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a) Cytokinin
0%
b) Auxin
0%
c) Ethylene
0%
d) Abscisic acid
Explanation
Answer : (b)
Q.29
Which of the following is a micronutrient ... ... [ JKCMEE 2011]
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a) Mg
0%
b) Zn
0%
c) Ca
0%
d) P
Explanation
Answer : (b)
Q.30
Nitrogen fixing symbiotic bacteria present in a legume root is .... .... [ Bih PMT 2006]
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a) Azotobacter
0%
b) Rhizobium
0%
c) Nitrobacter
0%
d) Nitrosomonas
Explanation
Answer : (b)
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