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Quiz 3
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Q.1
The most abundant element found in plants is ... ...[ CBSE 2004]
0%
a) Carbon
0%
b) Nitrogen
0%
c) Iron
0%
d) Manganese
Explanation
Answer : (a)
Q.2
Which element is required for germination of pollen grain .... .... [ Guj. CET 2007]
0%
a) Calcium
0%
b) Chlorine
0%
c) Potassium
0%
d) Boron
Explanation
Answer : (d)
Q.3
Nitrite is changed to nitrate by ... ...[ CPMT 2007]
0%
a) Nitrobacter
0%
b) Nitrosomonas
0%
c) Pseudomonas
0%
d) Clostridium
Explanation
Answer : (a)
Q.4
Passive absorption of minerals depends upon ... ..... [ CBSE 2001]
0%
a) Humidity
0%
b) Temperature
0%
c) Temperature and metabolic inhibitor
0%
d) Metabolic inhibitor
Explanation
Answer : (b)
Q.5
Yellowish edges appears in leaves deficient in ... .. [ kerala 2004]
0%
a) Ca2+
0%
b) Mg2+
0%
c) K+
0%
d) Sulphur
Explanation
K deficient plants exhibit chlorosis or yellowing along the leaf margins or tip starting with the bottom leaves & progressing up the plant. In severe cases, the leaves appear dry and scorched at the edges and the surfaces are irregular chlorotic Answer : (c)
Q.6
Enzyme catalysed reactions can be inhibited by ... ...[ AMU 1997]
0%
a) Mg2+
0%
b) Cu2+
0%
c) Hg2+
0%
d) Zn2+
Explanation
Answer : (c)
Q.7
In plants chlorosis is caused by the deficiency of ... .... [ JKCMEE 2010]
0%
a) Nitrogen
0%
b) Manganese
0%
c) Magnesium
0%
d) All the above
Explanation
Answer : (d)
Q.8
Mineral absorption is mostly ... .... [ Har PMT 1994]
0%
a) Physical process
0%
b) Chemical process
0%
c) Active process
0%
d) Passive process
Explanation
Answer : (c)
Q.9
Enzyme nitrogenase is required for ... ...[ JKCMEE 2007]
0%
a) Nitrification
0%
b) Nitrite reduction
0%
c) Nitrate reduction
0%
d) Nitrogen fixation
Explanation
Answer : (d)
Q.10
Phosphorus brings about ... .... [ CPMT 1991]
0%
a) Retardation of protein synthesis
0%
b) Healthy root growth
0%
c) Fruit ripening
0%
d) Retarded plant growth
Explanation
Answer : (b)
Q.11
Which one does not fix nitrogen ... ...[ Har PMT 2003 ]
0%
a) Azotobacter
0%
b) Spirogyra
0%
c) Anabaena
0%
d) Nostoc
Explanation
Answer : (b)
Q.12
Which of the following is present in the core of chlorophyll molecules? ... ... [ CBSE 2003]
0%
a) Fe
0%
b) Mg
0%
c) K
0%
d) Mn
Explanation
Answer : (b)
Q.13
Which option shows correct correlation in columns ....[Guj CET 2008]
a) Calcium
I) Required for ionic balance
i) Grey bolt on leaves
b) Boron
II) Essential for constitution of nucleic acid
ii) Fruit yield decreases
c) Phosphorus
III) Required for absorption of Ca
iii) Red blot on leaves
d) Chlorine
IV) Required to activate respiratory enzymes
iv) Fruit size diminishes
e) Manganese
V) Required for synthesis of bipolar spindle
v) Young root tips begin to die
0%
a) a-V-v, B-III-iv, c-II-iii, d-I-ii, e-IV-i
0%
b) a-I-iv, b-II-v, c-III-iii, d-IV-i, e-V-ii
0%
c) a-V-v, b-IV-iv, c-III-i, d -II-iii, e-I-ii
0%
d) a-I-iii, b-I-iv, c-V-v, d-III-ii, e-II-i
Explanation
Answer : (a)
Q.14
Plants require sulphur for .... .... [ DPMT 2001]
0%
a) ATP synthesis
0%
b) Protein synthesis
0%
c) Glucose synthesis
0%
d) DNA replication
Explanation
Answer : (b)
Q.15
Farmers of a particular region are concerned that premature yellowing of leaves of pulse crop might cause decrease in the yield. Which treatment could be beneficial to obtain maximum seed yield? ... ..[ AIIMS 2007]
0%
a) Application of iron and magnesium to promote chlorophyll synthesis
0%
b) Frequency irrigation of crop
0%
c) Treatment of plants with cytokinins along with a small dose of nitrogen fertilizer
0%
d) Removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5-T
Explanation
Answer : (c)
Q.16
Clay and organic matter of the soil have negative charges. They attract positively charged ions like ... ...[ AFMC 1999 [
0%
a) Ca2+
0%
b) Mg2+
0%
c) K+
0%
d) All the above
Explanation
Answer : (d)
Q.17
If the size of fruits diminishes in plants, which mineral ion should be added to soil ... .... [ Guj CET 2006]
0%
a) Calcium
0%
b) Chlorine
0%
c) Copper
0%
d) Boron
Explanation
Answer : (d)
Q.18
Which one group is of micro-elements? ... ... [ MPPMT 1995]
0%
a) Mn, Cu, Ca
0%
b) Na, K, B
0%
c) Na, Ni, Cl
0%
d) Cu, Mo, Zn, Fe
Explanation
The micronutrients are boron (B), copper (Cu), iron (Fe), chloride (Cl), manganese (Mn), molybdenum (Mo) and zinc (Zn). Answer : (d)
Q.19
A nitrogen fixing fungus is ... ...... Explanation is provided please click on
0%
a) Albugo
0%
b) Pullularia
0%
c) Amanita
0%
d) Pleurotus
Explanation
An Pleurotus mycorrhiza is a type of mycorrhiza fungi in which the symbiont fungus (AM fungi, or AMF) penetrates the cortical cells of the roots of a vascular plant forming arbuscules. Pleurotus also fixes nitrogen in association with diazotroph Answer : (d)
Q.20
A fertilizer has a formula of three figures 15-9-They stand for percentage of ... ....
0%
a) N, Ca and Mg
0%
b) Mg, P and K
0%
c) Ca, N nad Fe
0%
d) N, P and K
Explanation
Answer : (d)
Q.21
Which one is wrong combination ... ... [ kerala 2000 ]
0%
a) N2 - Amino acid
0%
b) Fe-cytochrome
0%
c) Na-Protein
0%
d) Mg-Chlorophyll
Explanation
Answer : (c)
Q.22
The macronutrient which is essential component of all organic compounds but is not obtained by plants from soil is .... ...[ KCET 2005]
0%
a) Nitrogen
0%
b) Phosphorus
0%
c) Magnesium
0%
d) Carbon
Explanation
Answer : (d)
Q.23
Nitrogen absorbed by plants is ... ... [ AMU 1999 ]
0%
a) Converted to nitrate
0%
b) Reduced to ammonia
0%
c) Changed to nitrite
0%
d) Combined with oxygen
Explanation
Answer : (b)
Q.24
Match the column ... ... [ kerala 2006]
a) Potassium
Constituent of ferredoxin
b) Sulphur
Involved in stomatal movement
c) Molybdenum
Needed in synthesis of auxin
d) Zinc
Component of nitrogenase
0%
a) a - 2, b -1, c - 4, d - 3
0%
b) a - 1, b - 2, c - 3, d - 4
0%
c) a - 4, b - 3, c - 2, d - 1
0%
d) a - 1, b - 3, c - 4, d - 2
Explanation
Answer : (a)
Q.25
Which is not a microelement? .... ... [ RPMT 1996]
0%
a) Cu
0%
b) Mn
0%
c) Bo
0%
d) Ca
Explanation
Answer : (d)
Q.26
N2 + 8e- + 8H+ +16ATP → 2NH4 + H2 +16 ADP + 16Pi The above equation refers to ... ...[kerala 2007]
0%
a) Ammonification
0%
b) Nitrification
0%
c) Nitrogen fixation
0%
d) Denitrification
Explanation
Answer : (c)
Q.27
Amino acids are mostly synthesised from ... ..... [ CBSE 1992]
0%
a) Mineral salts
0%
b) fatty acids
0%
c) Volatile acids
0%
d) α- ketoglutaric acid
Explanation
Answer : (d)
Q.28
The pigment protein present in nodulated roots inhabited by Rhizobium is ... ... [ Har PMT 2003]
0%
a) Nitrate reductase
0%
b) Hydrogenase
0%
c) Leghaemoglobin
0%
d) Plastocyanin
Explanation
Answer : (c)
Q.29
Which is not an essential element for plants ... ... [ AMU 2011]
0%
a) Iron
0%
b) Potassium
0%
c) Zinc
0%
d) Na/Ba/Cd/Al
Explanation
Answer : (d)
Q.30
Which is correctly matched .... .... [ CBSE 2012]
0%
a) Passive transport - ATP
0%
b) Apoplast - Plasmodesmata
0%
c) Potassium - Readily immobilisation
0%
d) Bakane of Rice seedling - F. Skoog
Explanation
Answer : (c)
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