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. |
Apples are generally wrapped in waxed paper toA. prevent sunlight for changing its colourB. prevent aerobic respiration by checking the entry of `O_(2)`C. prevent ethylene formation due to injuryD. make the apples look attractive |
| Answer» Correct Answer - b | |
| 102. |
Cell elongation in internodal regions of the green plants takes place due toA. Indole acetic acidB. CytokininC. GibberellinsD. Ethyelne |
| Answer» Correct Answer - C | |
| 103. |
Which method makes the seed coat permeable and allows growth of embryo ?A. vernahsationB. stratificationC. denudationD. scarifcation |
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Answer» Correct Answer - D In many plants, the seed coats are quite tough and provide mechanical resistance to the growth of the embryos. Scarification done by abrasion through machine, threshing, filing, etc this process is done to rupture or weaken the seed coat and promote germination. |
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| 104. |
Skototropic movements are induced byA. Night B. Light C. Touch D. Heat |
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Answer» Correct Answer - A Scototropic movements are induced by night |
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| 105. |
The movement shown by a plant kept in a phototropic chamber is due toA. Differential synthesis of hormonesB. Differential translocation of hormonesC. None of theseD. Both (1) and (2) |
| Answer» Correct Answer - B | |
| 106. |
Transport of auxins isA. PolarB. DiffuseC. Through xylemD. Through phloem |
| Answer» Correct Answer - D | |
| 107. |
Plant hormones areA. Growth regulatorsB. Growth promotersC. Growth inhibitorsD. None of above |
| Answer» Correct Answer - A | |
| 108. |
The direction of the transport of auxins isA. Polar in basipetalB. Polar in acropetalC. Through xylemD. Through phloem |
| Answer» Correct Answer - A | |
| 109. |
The most common auxin isA. GAB. ABAC. KinetinD. IAA |
| Answer» Correct Answer - D | |
| 110. |
Gibberellin promotes cell division and elongation inA. LeavesB. RootsC. ShootsD. All of these |
| Answer» Correct Answer - C | |
| 111. |
The deteriorative processes in plants that naturally terminate their functional life are collectively calledA. WiltingB. AbscissionC. PlasmolysisD. Senescence |
| Answer» Correct Answer - D | |
| 112. |
What is bolting ? What conditions can induce bolting naturally and how can it be induced artificially ? |
| Answer» Stimulation in the internode growth just before reproduction and flowering. Some plants require specific long day periods or specific cold requirement to bolt and flower. Bolting can be induced artificially by the treatment of gibberellins. | |
| 113. |
A natural growth regulator isA. NAAB. EthyleneC. 2, 4-DD. Benzaldetiyde |
| Answer» Correct Answer - B | |
| 114. |
Which of the following is not naturally occurring plant hormoneA. 2 ,4-DB. `GA_(2)`C. GibberellinD. IAA |
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Answer» Correct Answer - a 2,4-D (2,4 - Dichorophenxy acetic acid ) is a artifical auxin . |
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| 115. |
Auxins inhibits the grwth ofA. Apical budB. Lateral axillary budsC. Roots on stem cuttingD. Parthencoarpic devloment of fruits |
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Answer» Correct Answer - b |
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| 116. |
A weel know naturally occuring auxin is Or A natural growth regulator (hormone) isA. 2, 4-DB. Indole acetic acidC. NAAD. Maleic hydroazide |
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Answer» Correct Answer - b |
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| 117. |
Highest conncentration of auxins exist inA. At the base of various plant plant organsB. Growing tip of plantsC. in leavesD. In xylem and phoem cells only |
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Answer» Correct Answer - b |
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| 118. |
One of the sythertic auxin is Or Flowering in pineapple is promoted byA. NNAB. IAAC. GAD. IBA |
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Answer» Correct Answer - a |
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| 119. |
Essential requirement for seed germinationA. `O_(2)` and light B. `H_(2)and O(2)`C. `H_(2)O` and high temperatureD. Scarification and vemalisation |
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Answer» Correct Answer - B Essential requirement for seed germination is `H_(2)O and O_(2)` |
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| 120. |
Which of the following is a long day plantA. POPPY B. Xanthium C. Paddy D. Soyabean |
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Answer» Correct Answer - A PGPPV is a long day plant. |
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| 121. |
Which hormone is not translocated? A. Auxin B. Gibberellins C. ABA D. Cytokinin |
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Answer» Correct Answer - B Gibberellin is not translocated. |
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| 122. |
Major precursor of ethylene production in plants isA. lysineB. methionineC. alanineD. valine |
| Answer» Correct Answer - B | |
| 123. |
Which of the following is called as phytogerontogical hormoneA. EhtyleneB. AuxinC. GibberellinD. Cytokinin |
| Answer» Correct Answer - a | |
| 124. |
The most rfficient precursor of ethylene isA. AdenineB. ThiocarbamateC. ZeationD. Methionine |
| Answer» Correct Answer - d | |
| 125. |
The phyohormone which induces triple respone isA. IAAB. ABAC. `GA_(3)`D. `C_(2) H_(4)` |
| Answer» Correct Answer - d | |
| 126. |
Ahigher proportion of ethylene is found inA. Ripenining bannaB. Green bananaC. Green appleD. Fresh potao tuber |
| Answer» Correct Answer - a | |
| 127. |
Which is not a requirment of vernalisation?A. Aerobic conditionB. MoistureC. Low temperatureD. Differentiated tissues |
| Answer» Correct Answer - D | |
| 128. |
Vernalisation is seen inA. Sugar beet B. CarrotC. Cabbage D. All of the above |
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Answer» Correct Answer - D Vernalisation . is seen in sugar beet, carrot and cabbage |
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| 129. |
Impotance of day length ( photoperiodism ) in flowering of plants was first shown inA. LemnaB. tobaccoC. cottonD. Petunia |
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Answer» Correct Answer - B Photoperiodism was first discovered by Garner and Allard (1920, 1922). They observed that malyland mammoth variety of tobacco could be made to flower only by reducing the light hours with artificial darkning. On the basis of photoperiodic response to flowering plants have been divided into short day plants (tobacco), long day plant (e.g. wheat, hanbane), short long day plants. (e.g. Campanula), long short day plants (e.g. Bryophyllum) intermediate plants (e.g. wild kidney bean) and day neutral plants (e.g cotton) |
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| 130. |
Impotance of day length ( photoperiodism ) in flowering of plants was first shown inA. TomatoB. CottonC. TobaccoD. Potato |
| Answer» Correct Answer - C | |
| 131. |
The red absorbing from of phytochorme gets converted to the far - red absorbing from after getting irradiated atA. 660 nmB. 730 nmC. 530 nmD. 660 nm to 730 nm |
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Answer» Correct Answer - a (a) Pytochrome exists in two interconvertible forms. The red(660 nm), absorbing from Pr and far red (740 nm), absorbing Pfr |
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| 132. |
Apical dominance is caused byA. Abscisic acid in lateral bud B. Cytokinin in leaftipC. Gibberellin in lateral buds D. Auxin in shoot tip |
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Answer» Correct Answer - D Apical dominance is caused by auxin in shoot tip. |
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| 133. |
Apical dominance in plants is caused byA. High concentration of auxins in the temminal budB. High concentration of gibberellins in the apical budC. High concentration of auxius in the lateral budD. Absence of auxis and gibberellins in the apical bud |
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Answer» Correct Answer - a |
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| 134. |
Function of ABA isA. apical dominanceB. growth inhibitionC. cell divisionD. seed germination |
| Answer» Correct Answer - B | |
| 135. |
Which of the given is a long day plantA. Glycine maxB. SpinachC. ChrysanthemumD. tobacco |
| Answer» Correct Answer - B | |
| 136. |
The given figure shows development of an embryo that undergoes two phases A and B. select the correct option regarding it. A. `{:(A,B),("Geometric phase","Arithmetic phase"):}`B. `{:(A,B),("Arithmetic phase","Geometric phase"):}`C. `{:(A,B),("Arithmetic phase","Exponential phase"):}`D. `{:(A,B),("Exponential phase","Stationary phase"):}` |
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Answer» Correct Answer - A An embryo initially shows geometrical growth in cells but later it passes into arithometic phase. |
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| 137. |
Nutrients are required by plants for the synthesis of protoplasm and act as source of energy. |
| Answer» Correct Answer - 1 | |
| 138. |
Water provides the medium for enzymatic activites needed for growth while oxygen helps in releasing metabolic energy essential for growth activities. |
| Answer» Correct Answer - 1 | |
| 139. |
How is chlorenchyma formed? |
| Answer» It is formed due to the formation of chloroplast in the living thin - walled cells. | |
| 140. |
Phytochrome is found inA. Algae B. Fungi C. Vascular cryptogamsD. Flowering plants |
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Answer» Correct Answer - D Phytochrome is found in flowering plants |
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| 141. |
Match the column-I and Column-II |
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Answer» Correct Answer - 1-a,b 2-c,d |
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| 142. |
Match these molecules to hteir chemical composition:- |
| Answer» Correct Answer - A-`i`,B-ii,C=iii,D-iv,E-v | |
| 143. |
Which one among the following chemical is wued for causing defoliation of for causing defoliation of forest treesA. Malic hydrazideB. 2, 4-DC. AMO-1618D. Phosphon-D |
| Answer» Correct Answer - B | |
| 144. |
A hypothetical chemical involved in the following of plants is or chemical agent which has important role in flowering isA. GibberellinB. NAAC. FlorigenD. IAA |
| Answer» Correct Answer - C | |
| 145. |
Under water stress, the leaves of plants are found to contain higher concentration ofA. Gibberellic acidB. Cytokinins C. Abscisic acidD. Auxins |
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Answer» Correct Answer - C Under water stress, the leaves of plants are found to contain higher concentration of abscisic acid. |
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| 146. |
Beta vulgaris is A. SDP B. LDP C. DNP D. SLDP |
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Answer» Correct Answer - B Beta vulgaris in LDP. |
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| 147. |
Drooping of Tamarind leaves after sunset isA. Phototropism B. Phototaxis C. Photonasty D. Chemotaxis |
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Answer» Correct Answer - C Drooping of Tamarind leaves alter sunset is photonasty. |
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| 148. |
Which of the following is a short day plantA. WheatB. BarleyC. LarkspurD. Dahilia |
| Answer» Correct Answer - d | |
| 149. |
Ability of Venus Fly Trap to capture insects is due toA. Specialised “muscle-like” cells B. Chemical stimulation by prey C. Rapid turgor pressure changes D. Passive process requiring no special ability on the part of the plant. |
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Answer» Correct Answer - C Ability of Venus Fly Trap to capture insects is due to rapid turgor pressure changes |
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| 150. |
Given figure shows the effect of interruption of skotoperiod (dark period) in a short day plant by light of different types. Select the correct option for (i),(ii) and (iii).A. `{:((i),(ii),(iii),),("Flowering","Flowering","No flowering",):}`B. `{:((i),(ii),(iii),),("No flowering","No flowering"," Flowering",):}`C. `{:((i),(ii),(iii),),("No flowering","Flowering","No flowering",):}`D. `{:((i),(ii),(iii),),("Flowering","No flowering","No flowering",):}` |
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Answer» Correct Answer - c Short day plants (or long night plants) require a continuous critical dark period, which must be exceeded for flowering. If the plant is exposed to even a flash of light (red, usually 660 nm)before achieving a critical dark period, flowering is prevented. However, red light effect can be prevented by immediately providing far-red light. Red and far-red exposure given in succession show that plant response is determined by the last exposure. Photoperiodic response is believed to be mediated by phytochrome pigment which shows reversible change at red (660nm) and far-red (730 nm) wavelength. |
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