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.
| 51. |
what is trueA. hygrophytes have isobilateral astomatic leavesB. hygrophyes have hydathodesC. most of hygrohytes have hydayhodesD. xerophytes have more lenticels but thin cuticle. |
| Answer» Correct Answer - c | |
| 52. |
root hairs areA. always unicellularB. sometimes unicellularC. sometimes multicellularD. always multicellular. |
| Answer» Correct Answer - a | |
| 53. |
secondary xylem isA. bastB. barkC. corkD. wood |
| Answer» Correct Answer - d | |
| 54. |
cambium productsA. secodary permanent tissueB. secondary meristematic tissueC. secondary apical meristemD. all the above. |
| Answer» Correct Answer - a | |
| 55. |
what is true of heatwoodA. it does not help in water transportB. it is resistant to bacterial infectionsC. it is made up of degenerated cellsD. allthe above. |
| Answer» Correct Answer - d | |
| 56. |
bulliform cell differ from other cells in beingA. large, thin-walled, contain containing waterB. large, thick-walled, contain abundant chloroiplastsC. small thick - walled, contain starchD. small,thin -walled, contain calcium oxalate |
| Answer» Correct Answer - a | |
| 57. |
motor cells take part inA. guttationB. transpirationC. inrollingD. all the above. |
| Answer» Correct Answer - c | |
| 58. |
the wood of commerce isA. sap-wood (alburnum)B. heart wood( duramen)C. spring woodD. autumn wood |
| Answer» Correct Answer - b | |
| 59. |
which one is not correct about heartwoodA. it is formed of living cellsB. it contains resin, tannins and other organic contentsC. it is of dark colorD. it lies in the centre of trunk |
| Answer» Correct Answer - a | |
| 60. |
Xylem fibre isA. heart woodB. wood fibreC. libriform fibreD. bast fibre |
| Answer» Correct Answer - b | |
| 61. |
Tyloses are found inA. secondary xylemB. secondary phloemC. callus tissueD. cork cells. |
| Answer» Correct Answer - a | |
| 62. |
an undifferentiated mesophyll is found inA. isobilateral leavesB. dorsiventral mesophytic leavesC. dorsiventral xerophytic leavesD. vertical leaves. |
| Answer» Correct Answer - a | |
| 63. |
radial vascular bundles occur inA. stemB. monocot rootC. dicot rootD. both monocot and dicot roots |
| Answer» Correct Answer - d | |
| 64. |
radial vascular bundles are those in whichA. xylem is surrounded by phloemB. phloem is surrounded by xylemC. xylem and phloem occur on the same radiusD. xylem and phloem are found pm different radii. |
| Answer» Correct Answer - d | |
| 65. |
three radial vascular bundles are present inA. monocot stemB. monocot rootC. dicot stemD. dicot root |
| Answer» Correct Answer - d | |
| 66. |
radial vascular bundles occur inA. stemB. monocot stemC. dicot stemD. root |
| Answer» Correct Answer - d | |
| 67. |
endodermis occurs inA. stems onlyB. roots onlyC. dicots stems and all types of rootsD. both monocot and dicot stems as well as roots. |
| Answer» Correct Answer - c | |
| 68. |
in isobilateral leavesA. lower surface is brighter greenB. upper surface is lighter greenC. both the surface are equally greenD. upper surface is dark green while the lower surface is lighter green |
| Answer» Correct Answer - c | |
| 69. |
tissue found between xylem and phloem bundles of a root isA. vascular parenchymaB. parenchymaC. conjuncative meristemD. conjuctive parenchyma |
| Answer» Correct Answer - d | |
| 70. |
which character is not associated with plant where shull studied inbreeding depression while miller and lethan extracted a hormone from its seedsA. atactostele in stemB. bundle sheath in leafC. chromosome number 30 in endospermD. medulla absent in root. |
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Answer» Correct Answer - d Maize |
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| 71. |
if all the lenticels of stem are blocked , the first to die will beA. leavesB. shoot tipsC. rootsD. none of the above. |
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Answer» Correct Answer - c Exchange of gases and aerobic respiration required for downword translocation of food is reduced. |
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| 72. |
secondary xylem isA. endarchB. exarchC. mesarchD. none of the above. |
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Answer» Correct Answer - d Endarch, exarch, mesarh or centarch terms are used generally in relation to protoxylem . Sencondary xylem is deviod of protoxylem. |
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| 73. |
the outer cellular complex present on the outside of those stems and roots which have undergone secondary growth isA. peridermB. epiblemaC. phellodermD. phellogen |
| Answer» Correct Answer - a | |
| 74. |
what is correct sequenceA. xylem-cambium-medullaB. cortex-endodermis-pericycle-xylemC. cambium-xylem-cortexD. |
| Answer» Correct Answer - b | |
| 75. |
atactostele consists of vasular bundlesA. arranged in a ringB. three in numberC. scattered in ground tissueD. broken vascular bundles. |
| Answer» Correct Answer - c | |
| 76. |
Read the different components from (A) to (D) in the list given below and tell he correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem (A) Secondary cortex , (B) Wood (C)Secondary phloem , (D) PhellemA. c,d,b,aB. a,b,d,cC. d,a,c,b,D. d,c,a,b |
| Answer» Correct Answer - c | |
| 77. |
thin-walled large cells present in the leaf epdiermis, and capable of contraction and expansion areA. guard cellsB. subsidiary cellsC. gland cellsD. bulliform cells. |
| Answer» Correct Answer - d | |
| 78. |
secondary growth is best observed inA. teak and pineB. deodar and fernC. wheat and maiden hair fernD. sugarcane and sunflower. |
| Answer» Correct Answer - a | |
| 79. |
passage cells are thin- walled cells found inA. phloem elements to serve as entry points.B. testa of seeds for emergence of embryonal axis.C. central area of style for passage of pollen tubeD. endodermis of roots to facilitate rapid transport of water from cortex to pericycle. |
| Answer» Correct Answer - d | |
| 80. |
gymnosperms are soft-wooded as they lackA. cambiumB. phloem fibresC. thick - walled tracheids.D. xylem fibres. |
| Answer» Correct Answer - d | |
| 81. |
complementry cells occur inA. pericycleB. pithC. lenticelsD. endodermis |
| Answer» Correct Answer - c | |
| 82. |
each annual ring or growth ring consists of two strips ofA. springwood and early woodB. only spring woodC. only autumn woodD. spring wood and autumn wood. |
| Answer» Correct Answer - d | |
| 83. |
exodermis occurs inA. monocot occurs inB. monocot rootC. dicot rootD. leaf |
| Answer» Correct Answer - a | |
| 84. |
oldest phloem occursA. nearest the vascular cambiumB. nearest the oldest secondary xylemC. on the inner side of phloemD. on the outer side of phloem |
| Answer» Correct Answer - d | |
| 85. |
Complementary cells are found inA. lenticlesB. pholemC. endodermis of monocot stemsD. exodermis |
| Answer» Correct Answer - a | |
| 86. |
The cell wall is impermeable to water and deposition of suberin is also found inA. barkB. corkC. bastD. xylem |
| Answer» Correct Answer - b | |
| 87. |
the formation of annual rings in dicot stem mainly depends upon difference inA. formation of unequal quantities of xylem and phloemB. acitvity of vascular cambian due to seasonal varationsC. activity of cork cambium due to seasonal variationsD. formation of unequal quantities of sapwood and heart wood. |
| Answer» Correct Answer - b | |
| 88. |
in the veins of leaves. The pholem is situated towardsA. upper epidermisB. lower eqidermisC. all round the xylemD. lateral to xylem |
| Answer» Correct Answer - b | |
| 89. |
in an annual ring , the light coloured part isA. heart woodB. sapwoodC. Early woodD. late wood. |
| Answer» Correct Answer - c | |
| 90. |
the other term for annual ring isA. annual xylemB. annual woodC. growth stripD. growth ring |
| Answer» Correct Answer - d | |
| 91. |
monocot stem hasA. bicollateral closed vascular bundlesB. bicollateral open vascular bundles.C. collateral open vascular bundles.D. collateral closed vascular bundles. |
| Answer» Correct Answer - d | |
| 92. |
Mesophyll is differentiated in to palisade and spongy tissues inA. extremely xerophytic leavesB. hydrophytic leavesC. monocot leavesD. dicot leaves. |
| Answer» Correct Answer - d | |
| 93. |
mesophyll is differentiated into palisade and spongy tissue inA. some monocot leavesB. all dorsiventral leavesC. all monocot leavesD. all isobilateral leaves. |
| Answer» Correct Answer - b | |
| 94. |
Lenticels areA. scars on old stemsB. special stomataC. arerating pores in barkD. special stomata on hydrophytic plants. |
| Answer» Correct Answer - c | |
| 95. |
which tissue gives rise to secnodary growthA. apical meristemB. adventitious rootC. axillary budD. vascular cambium. |
| Answer» Correct Answer - d | |
| 96. |
perimary stem isA. main stemB. stem having distinct nodes sC. stem having only primary tissuesD. stem having branches. |
| Answer» Correct Answer - c | |
| 97. |
isobilateral leaves have stomata onA. both upper and lower surfacesB. upper surface onlyC. lower surface onlyD. none of the surfaces. |
| Answer» Correct Answer - a | |
| 98. |
oldest phloem isA. primary phloemB. secondary phloemC. crushed phloemD. intermediate phloem. |
| Answer» Correct Answer - a | |
| 99. |
in spring (rainy summer) the activity of vascular cambium isA. moreB. lessC. normalD. none of the above. |
| Answer» Correct Answer - a | |
| 100. |
gymnosperm wood is non-porous becouse itA. lacks vesselsB. contains tracheaeC. has abundant fibresD. contains no fibres. |
| Answer» Correct Answer - a | |