Question No:1
Assertion: Rhizobium fix nitrogen hi symbiotic association with root nodules of leguminous plants only.
Reason: Biological nitrogen fixation is anaerobic process.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:2
Assertion: Nitrogen-fixing bacteria in legume root nodules survive in oxygen-depleted cells of nodules.
Reason: Leghaemoglobin completely removes oxygen from the nodule cells.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:3
Assertion: Deficiency of sulphur causes chlorosis in plants.
Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acids.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:4
Assertion: S and Ca are immobile.
Reason: S and Ga are part of the structural component of cell and hence not easily released.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:5
Assertion: Boron is required for uptake and utilization of calcium ion.
Reason: Boron is not required for carbohydrate translocation.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:6
Assertion: lorn is essential for formation of chlorophyll.
Reason: It activates catalase enzyme.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:7
Assertion: Calcium is a constituent of middle lamella.
Reason: Calcium is required in mitotic division.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:8
Assertion: Sulphur is present in two amino acids cysteine and methionine.
Reason: Vitamin (thiamine, biotin, coenzyme-A) and ferredoxin also contain sulphur.
[A] If both the assertion and the reason are true and the reason is a correct explanation of the assertion
[B] If both the assertion and reason are true but the reason is not a correct explanation of the assertion
[C] If the assertion is true bat the reason is false
[D] If both the assertion and reason are false
Question No:9
Leguminous plants are able to fix atmospheric nitrogen through the process of symbiotic nitrogen fixation. Which one of the following statements is not correct during this process of nitrogen fixation?
[A] Leghaemoglobin scavenges oxygen and is pinkish in colour
[B] Nodules act as sites for nitrogen fixation
[C] The enzyme nitrogen catalyses the conversion of atmospheric N2 to NH3
[D] Nitrogenase is insensitive to oxygen
Question No:10
The genetically-modified (GM) brinjal in India has been developed for:
[A] Insect-resistance
[B] Enhancing self life
[C] Enhancing mineral content
[D] Drought-resistance
Question No:11
An element playing important role in nitrogen fixation is
[A] Molybdenum
[B] Copper
[C] Manganese
[D] Zinc
Question No:12
Which one of the following is not a micronutrient?
[A] Molybdenum
[B] Magnesium
[C] Zinc
[D] Boron
Question No:13
The free-living, anaerobic nitrogen-fixer is:
[A] Beijerinckia
[B] Rhodospirillum
[C] Rhizobium
[D] Azotobacter
Question No:14
The common nitrogen-fixer in paddy fields is:
[A] Rhizobium
[B] Azospirillum
[C] Oscillatoria
[D] Frankia
Question No:15
Which one of the following is not an essential mineral element for plants while the remaining three are?
[A] Iron
[B] Manganese
[C] Cadmium
[D] Phosphorus
Mineral Nutrition Mock Exam-8
CategoriesNEET Biology