InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Sinks are related toA. Transport of organic solutesB. StomataC. EnzymesD. Phytochrome |
| Answer» Correct Answer - A | |
| 102. |
A nitrogen fixing microbe associated with Azolla in rice fields isA. AnabaenaB. FrankiaC. TolypothrixD. Spirulina |
| Answer» Correct Answer - 1 | |
| 103. |
Which of the following is a bacterium involvedin denitrification?A. NitrococcusB. NitrosomonasC. PseudomonasD. Nitrobacter |
| Answer» Correct Answer - C | |
| 104. |
Consider the following statements: 1. Copper is present in cytochrome oxidase. 2. Pantothenic acid is the precursor of coenzyme A. 3. Thiamine pyprophosphate is the prosthetic group in decarboxylases 4. Zinc is present in RNA and DNA polymerases Which of these statements are correct?A. 1 and 2B. 2, 3 and 4C. 1, 2, 3 and 4D. 1, 3 and 4 |
| Answer» Correct Answer - 1 | |
| 105. |
Find out the correct options 1. Copper is present in cytochrome oxidase 2. Pantothenic acid is precursor of CoA 3. Thymine pyrophosphate is prosthetic group in decarboxylases 4. Zinc is present in RNA and DNA polymerases.A. 1 and 2B. 2, 3 and 4C. 1, 2, 3 and 4D. 1, 3 and 4 |
| Answer» Correct Answer - 1 | |
| 106. |
Which one of the following elements is present in chlorophylls?A. ManganeseB. MagnesiumC. CopperD. Iron |
| Answer» Correct Answer - B | |
| 107. |
The major portion of the dry weight of plants comrises of Or Frame work elements in plants areA. Carbon, hydrogen, and oxygenB. Nitrogen, Phosphorus and potassiumC. Calcium, maganesium and sulphurD. Carbon, nitrogen and hydrogen |
| Answer» Carbon, hydrogen and oxygen together consitute about 94 % of the total dry weight of the plant. Frame work elements : C, H, N, O, P,S , these six elements are called as frame work elements which constitudem the body of plants. | |
| 108. |
The process of conversion of atmospheric free `N_(2)` gas to nitrogenous compounds like `NH_(3)` is termed asA. nitrificationB. nitrate reductionC. `N_(2)` fixationD. ammonification |
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Answer» Correct Answer - C Nitrogen fixation is the convertion of inert atmospheric nitrogen or dinitrogen `(N_(2))` into utilisable compounds of nitrogen like nitrate, ammonia, amino acids. Nitrogen fixation can be atmospheric, industrial or biological. |
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| 109. |
Which is essential for root hair growth Or The mineral present in cell wall isA. NaB. CaC. KD. Mg |
| Answer» Correct Answer - B | |
| 110. |
Match the correct deficiency symptoms.A. Cu - exanthemaB. Mg - interveinal chlorosis and upward curling of leavesC. Zn - malformation of leaves and fruitsD. All of the above |
| Answer» Correct Answer - 4 | |
| 111. |
Boron in green plants assists inA. activation of enzymesB. acting an enzyme cofactorC. photosynthesisD. sugar transport |
| Answer» Correct Answer - D | |
| 112. |
Boron in green plants assists inA. Activation of enzymesB. Acting as enzymes co - factorC. PhotosynthesisD. Sugar transport |
| Answer» Correct Answer - D | |
| 113. |
Boron in green plants assists inA. Sugar transportB. Activation of enzymesC. Acting an enzyme cofactorD. Photosynthesis |
| Answer» Boron is absorbed by the plants as borate it is involved in the transport of carbohydrates (Sugar) | |
| 114. |
Boron in green plants assists inA. Sugar transportB. activation of enzymesC. acting as enzymes cofactorD. photosynthesis |
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Answer» Correct Answer - A Boron is required by plants for (i) uptake and utilisation of `Ca^(2+)`, (ii) pollen germination and cell differentiation (iii) carbohydrate translocation. |
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| 115. |
In green plants, Boron assistsA. in activation of enzymesB. in nitrogen fixationC. in photosynthesisD. in sugar transport |
| Answer» Correct Answer - 4 | |
| 116. |
Match the following essential elements (List-I) with their respective roles (List-II) and select the correct answer using the codes given below the lists A. `{:(A,B,C,D),(4,1,3,2):}`B. `{:(A,B,C,D),(1,2,5,3):}`C. `{:(A,B,C,D),(1,4,5,2):}`D. `{:(A,B,C,D),(4,1,2,3):}` |
| Answer» Correct Answer - 4 | |
| 117. |
The deficiency of boron results in all exceptA. top sicknessB. browning of head in cauliflowerC. internal corkD. marsh spot disease |
| Answer» Correct Answer - 4 | |
| 118. |
The deficiency of boron results in all exceptA. top sicknessB. browning of head in cauliflowerC. internal cork of appleD. marsh spot disease |
| Answer» Correct Answer - 4 | |
| 119. |
Give two important roles of soil for plants. |
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Answer» (i) Soil harbours a large number of microorganisms that not only decompose organic remains but also release the minerals bound in organic matter. (ii) Soil holds water and supplies air to the roots. |
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| 120. |
What is ammonification? |
| Answer» Decomposition of organic nitrogen present in dead remains of plants and animals into ammonia is called ammonification. | |
| 121. |
Which of the following statements are true? If false, correct them: (a) Boron deficiency leads to stout axis. (b) Every mineral element that is present in a cell is needed by the cell. (c) Nitrogen as a nutrient element, is highly immobile in the plants. (d) It is very easy to establish the essentiality of micronutrients because they are required only in trace quantities. |
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Answer» (a) True (b) All the mineral elements present in a cell are not needed by the cell. For example, plants growing near radioactive mining sites tend to accumulate large amounts of radioactive compounds. These compounds are not essential for the plants. (c) Nitrogen as a nutrient element is highly mobile in plants. It can be mobilised from the old and mature parts of a plant to its younger parts. (d) True |
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| 122. |
State true or false : (i) In the initial phase of absorbation of elements the ions are absorbed passively. (ii) Deficiency of manganese leads to inhibition of Ca translocation to shoot apex. |
| Answer» (i) True , (ii) False | |
| 123. |
The major portion of the dry weight of plants comprised ofA. carbon,hydrogen and oxygenB. nitrogen, phosphorus and potassiumC. calcium, magnesium and sulphurD. carbon, nitrogen and hydrogen |
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Answer» Correct Answer - A The four most common elements in living organisms aer H,C,O,N. these are also called as framework element. |
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| 124. |
Choose the correct match. Bladderwort , sundew, venus, flytrapA. nepenthes, dionea, droseraB. Nepenthes, utricularia, vandaC. Utricularia, drosera, dioneaD. Dionea, trapa, vanda |
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Answer» Correct Answer - C Utricularia, Drosera ad Dionaea are also known as bladderwort, sundew and venus fly trap, respectively. |
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| 125. |
Membrane pathways for minerals along permeasesA. need ATPB. need carrier solute complexC. need pinosomesD. need diffusion gradient |
| Answer» Correct Answer - 4 | |
| 126. |
Carrier proteins for active salt uptakeA. have poresB. from complex with ionsC. function uner transpiration pullD. All of the above |
| Answer» Correct Answer - 2 | |
| 127. |
Match the following A. (i)- (q), (ii)- (s), (iii)- (p), (iv)- (r )B. (i)- (s), (ii)- (q), (iii)- (p), (iv)- (r )C. (i)- (p), (ii)- (s), (iii)- (q), (iv)- (r )D. (i)- (q), (ii)- (r), (iii)- (p), (iv)- (s) |
| Answer» Correct Answer - 1 | |
| 128. |
In which of the following, all the three are macronutrientsA. iron,copper,molybdenumB. Molybdenum,magnesium, manganeseC. Nitrogen, nickel, phosphorusD. Boron, zinc, manganese |
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Answer» Correct Answer - C None of the option is correct w.r.t question. The option (a) seems to be more appropritate. None of the option consist of all three macronutrients, but option (c) have nitrogen and phosphorus which are macronutrients, but nickel is a micronutrients. |
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| 129. |
In which of the following, all the three are macronutrientsA. Nitrogen, sulphur, phosphorusB. Boron, zinc, manganeseC. Iron, copper, molybdenumD. Molybdenum, magnesium, maganese |
| Answer» Correct Answer - A | |
| 130. |
In which of the following, all three are macronutrients?A. Iron, copper, molybdenumB. Molybdenum, magnesium, manganeseC. Nitrogen, nickel, phosphorusD. Boron, zinc, manganese |
| Answer» Correct Answer - none | |
| 131. |
Which one of the following is a free-living obligate anaerobic bacterium?A. ClostridiumB. RhodospirillumC. AzotobacterD. Bacillus subtilis |
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Answer» Correct Answer - A Clostridium is a free-living obligate anaerobic bacteria. |
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| 132. |
Magnesium is mainly present in the form ofA. CitrateB. BicarbonateC. CarbonateD. Phosphate |
| Answer» Magnesium occurs in the soil in the form of magnesite `(MgCO_(3))`, dolomite `(MgCO_(3),CaCO_(3))`, magnesium sulphate `(MgSO_(4))` and as silicates. It is absorbed from the soil in form of ions `(Mg^(++))` | |
| 133. |
Mo is part of enzyme:A. reverse transcriptaseB. restriction endonucleaseC. hexokinaseD. nitrogenase |
| Answer» Correct Answer - D | |
| 134. |
The deficiencies of micronutrients, not only affects growth of plants but also vital functions such s photosynthetic and mitochondrial electron flow. Among the list given below, which group of these elements shall affect most, both photosynthetic and mitochondrial electron transportA. Cu, Mn, FeB. Co, Ni, MoC. Mn, Co, CaD. Ca, K, Na |
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Answer» Cu-Copper takes part in electron as plastocyanon (between `PS II and PSI`) and cytochrome to oxygen Mg-Mangenese is activator of a number of enzymes like reductases, oxidases, etc. taking part in respiration and photosynthesis Fe- Iron is component of `e^(-)` transferring biomolecules like cytochromes and ferredoxin. they are essential components of photosynthesis. |
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| 135. |
The deficiencies of micronutrients not only affects growth of plants, but also vital functions such as photosynthetic and mitochondrial electron flow. Among the list given below, which group of three elements shall affect the most, both photosynthetic and mitochondrial electron transport ?A. Cu, Mn, FeB. Co, Ni, MoC. Mn, Co, CaD. Ca, K, Na |
| Answer» Correct Answer - A | |
| 136. |
Photosynthetic nutrition in plants is also known asA. holophytic nutritionB. chemotrophic nutritionC. heterotrophic nutritionD. heteroholophytic nutrition |
| Answer» Correct Answer - 1 | |
| 137. |
Which one plays an important role in energy metabolism?A. CalciumB. SodiumC. SulphurD. Phosphorus |
| Answer» Correct Answer - 4 | |
| 138. |
Deficiency of iron causesA. redused lraves and stunted growthB. bending of leaf tipC. interveinal chlorosisD. decrease in protien synthesis |
| Answer» Correct Answer - C | |
| 139. |
Which one of the following elements plays a major role in nitrogen metabolism by activating the enzyme, nitrogenase ? |
| Answer» Correct Answer - D | |
| 140. |
Plants need one of the following for ATP and meristematic tissue formation.A. P,NB. N,CuC. N,CaD. K |
| Answer» Correct Answer - A | |
| 141. |
The major role of minor element inside living organisms is to act as:A. binder of cell structureB. constituents of hormonesC. building blocks of important amino acidsD. cofactor of enzymes |
| Answer» Correct Answer - D | |
| 142. |
The most abundant element present in the plants is Or Which of the following is not absorbed through soilA. MaganeseB. IronC. CarbonD. Nitrogen |
| Answer» Carbon is absorbed in the form of carbon dioxide. | |
| 143. |
Which of the four most abundant element in most plants (C, H, O and N), dows a terrestrial green plant procure mainly through its roots from the soil?A. H and OB. H and NC. C and OD. O and N |
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Answer» Correct Answer - B Hydrogen (H) is mainly obtained from soil water by roots. Oxygen (O) is either derived from the wair or from the water. Carbon (C) is derived from atmosphere as `CO_(2)`. The plants are unable to use atmospheric nitrogen. It is inert and plants cannot make use of it directly. By the process of fixation of atmospheric `N_(2)` nitrates `(NO_(3)^(-))`, ammonium ion `(NH_(4)^(+))`, etc. These nitrogenous compounds enter plants as nutrietns through the roots and are assimilated as organic nitrogen. |
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| 144. |
Most abundant element found is plants isA. carbonB. nitrogenC. ironD. maganese |
| Answer» Correct Answer - 1 | |
| 145. |
Select the incorrect statement w.r.t criteria of essentiality of mineralsA. Element must be necessary for normal growth and reproductionB. Element must be rplaceable by another elementC. Disorders caused by the absence/ deficiency of an element can be corrected only by adding that specific element.D. Element must be directly involved in plant metabolism |
| Answer» Correct Answer - B | |
| 146. |
Which is not a criteria for essentiality of a mineral ?A. Direct role in metabolismB. Requirement is specificC. Deficiency causes hunger signsD. Dispensible for growth |
| Answer» Correct Answer - D | |
| 147. |
The criteria for the essentiality of a mineral element were given byA. Arnon and StoutB. HoaglandC. HopkinsD. Sachs and Liebig |
| Answer» Correct Answer - 1 | |
| 148. |
Which of the following is not criterion for essentiality of an element?A. Requirement of the element is specificB. Necessary for normal growth and reproductionC. not replaceable by another elementD. indirectly involved in plant metabolism |
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Answer» Correct Answer - D Arnon and stout (1939) proposed criteria for knowing the essentiality of an element, these are (i). It is indispensable for the growth of plants, It is indispensable for the growthh of plants. (ii). The element in directly ivolved in the metabolism of plants. (iii). A plant is unable to complete its vegetative or reproductive phase in the absence of the element (iv). The element cannot be replaced by any other element (v). The absence or deficiency of the element produces disorders, these disorders are a direct result of the lack or deficiency of the element. (vi). The element along can correct the disorders produced by its absence or deficiency. Hence, it is clear that an element indirectly involved in plant metabolism does not fit into criterion for essentiality of an element. |
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| 149. |
It is possible to determine whether an element is essential by observing growth of plantsA. in soil form which the particular element is removedB. in soil in which only the particular element is presentC. in a inert medium to which solution of only the particular element is addedD. in a inert medium to which a nutrient solution excluding that particular element is added |
| Answer» Correct Answer - 4 | |
| 150. |
Most abundant elements in the living cells areA. C, O, N and PB. C, H, O and CaC. C, H, O and ND. C, H, Mg and N |
| Answer» Correct Answer - 3 | |