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.
| 1001. |
In a dorsiventral leaf, location of palisade tissue and phloem is respectively on the ______surfaces.A. Abaxial and abaxialB. Adaxial and abaxialC. Adaxial and adaxialD. Abaxial and adaxial |
| Answer» Correct Answer - B | |
| 1002. |
A few drops of sap were collected by cutting across a plant stem by a suitable method. The sap was tested chemically. Which one of the following test results indicates that it is phloem sap ?A. Absence of sugarB. AcidicC. AlkalineD. Low refractive index |
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Answer» Correct Answer - C Alkaline `pH(7.8-8.0)` is present in phloem sap where as xylem sap is acidic |
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| 1003. |
Passage cells are present inA. EpidermisB. EndodoermisC. XylemD. Lenticels and hydathodes |
| Answer» Correct Answer - B | |
| 1004. |
The function of cork cambium (phellogen) is to produceA. Secondary xylem and secondary phloemB. Cork and secondary cortexC. Secondary cortex and phloemD. Cork and Secondary xylem |
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Answer» Correct Answer - B Function of cork cambium is to produce cork and secondary cortex |
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| 1005. |
Root hairs areA. always unicelluflarB. sometimes unicellularC. sometimes multicellularD. always multicellular |
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Answer» Correct Answer - A Roots hairs are always unicelluar |
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| 1006. |
Dorsiventral leaf hasA. Stomata on both sideB. Stomata on lower surfaceC. Stomata on upper surfaceD. No stomata |
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Answer» Correct Answer - B Dorsiventral leaves are found in dicots. In dicots stomata are present in lower epidermis. |
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| 1007. |
Which of the following do not have stomataA. XerophytesB. MesophytesC. HydrophytesD. Submerged hydrophytes |
| Answer» Correct Answer - D | |
| 1008. |
The function of cork cambium (phellogen) is to produceA. Cork and secondary cortexB. Secondary xylem and secondary phloemC. CorkD. Secondary cortex and phloem |
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Answer» Correct Answer - A Cork cambium (phellogen) develops from outer layer of cortex . It produces secondary cortex (phelloderm) on inner side and cork (phellem) on outer cells of pericycle. |
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| 1009. |
In free floating plant , the stomata areA. AbsentB. Present on upper surfaceC. Present on both the surfaceD. Present on lower surface |
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Answer» Correct Answer - B Free floating plants float freely upon the surface of water. Stomata present on upper epidermis.e.g., Wolffia, Lemna, (Selaginella). |
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| 1010. |
Assertion: The companion cells help in maintaining the pressue gradient in sieve tube Reasons: The companion cells are specialished parenchymatous cells which are closely associated with sieve tube elements |
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Answer» Correct Answer - C The companion cells help in maintaining the pressure gradient in sieve tube. The compannion cells are speicialised parenchymatous cells, which are closely associateed with sieve tube elements |
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| 1011. |
The chiedf function of sieve tubes isA. To translocate the ofganic materials manufactured in the leavesB. TO conduct minealsC. To trnsport water from root to leavesD. To help to plant in forming wood |
| Answer» Correct Answer - A | |
| 1012. |
Lateral roots originate fromA. EpiblemaB. PericycleC. CortexD. Endodermis |
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Answer» Correct Answer - B In roots lateal bracnches grow from pericycle. |
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| 1013. |
In free floating plant , the stomata areA. AbsentB. Present on upper surfaceC. Present on both the surfacesD. Present on lower surface |
| Answer» Correct Answer - B | |
| 1014. |
Which combination of tissues act together to provide the support to the hypocotyl of a seedlingA. Xylem and phloem fibresB. Epidermis and parenchymaC. Xylem and parenchymaD. Epidermis and collenchyma |
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Answer» Correct Answer - D Mechanical strength to hypocotyl of seeding is provided by epidermis and collenchyma tissues. |
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| 1015. |
At maturiity, which of the following is non-pnucleated?A. Sieve cellB. Companion cellC. Palisade cellD. Cortical cell |
| Answer» Correct Answer - A | |
| 1016. |
Lateral roots originate fromA. Endodermal cells lying against phloemB. CortexC. Pericycle cells lying against protoxylemD. Cork cambium |
| Answer» Correct Answer - C | |
| 1017. |
Which combination of tissues act together to provide the support to the hypocotyl of a seedlingA. Xylem and phloem fibersB. Epidermis and parenchymaC. Xylem and parnchuymaD. Epidrmis and collenchyma |
| Answer» Correct Answer - D | |
| 1018. |
The layer of cells outside the phloem meant for giving rise to the root branches is calledA. CombiumB. CorpusC. EndodermisD. Percycle |
| Answer» Correct Answer - D | |
| 1019. |
Senscentce and death are essential in the functiong ofA. Sieve tubesB. Companion cellsC. Both 1 and 2D. Xylem and sclerenchyma cells |
| Answer» Correct Answer - D | |
| 1020. |
In trees, death of protoplasts is essential for a vital function such asA. Food transportB. Water transportC. Both (1) and (2)D. Stomatal movements |
| Answer» Correct Answer - B | |
| 1021. |
A permanent secondary tissue is production by the activiv ofA. marginal meristemB. intercalary meristemC. apical meristemD. laterl meristem |
| Answer» Correct Answer - D | |
| 1022. |
A permanent tissue that can develop power of division isA. parenchymaB. collenchymaC. fibresD. sieve tube |
| Answer» Correct Answer - A | |
| 1023. |
Diffuse porous woods are characterstic of plants growing inA. Alpine regionB. Cold winter regionsC. Temperate climateD. Tropics |
| Answer» Correct Answer - D | |
| 1024. |
Closed vascular bundles lackA. CambiumB. PithC. Ground tissueD. Conjunctive tissue |
| Answer» Correct Answer - A | |
| 1025. |
Closed vascular bundles lackA. Conjunctive tissueB. CambiumC. PithD. Ground tissue |
| Answer» Correct Answer - B | |
| 1026. |
Closed vascular bundles lackA. ground tissueB. conjunctive tissueC. cambiumD. pith |
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Answer» Correct Answer - c Closed vascular bundles lack cambium . In dicot stems , cambium is present between phloem and xylem . Such vascular bundles because of the presence of cambium , possess the ability to form secondary xylem and phloem tissues and hence, are called open vascular bundles . On the contrary, vascular bundles in monocots have no cambium . hence , they do not form secondary tissues, and are referred to as closed. |
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| 1027. |
The cork cambium, cork and secondary cortex are collectively calledA. phellogenB. peridermC. PhellemD. phelloderm |
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Answer» Correct Answer - b The periderm is a secondary protective structure and is made up of cork cambium (phellogen ) , cork (phellem) and secondary (phelloderm). |
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| 1028. |
The cork cambium, cork and secondary cortex are collectively calledA. PhellemB. PhellodermC. PhellogenD. Peridem |
| Answer» Correct Answer - D | |
| 1029. |
The cork cambium, cork and secondary cortex are collectively calledA. phellodermB. phellogenC. peridermD. phellem |
| Answer» Correct Answer - C | |
| 1030. |
Cork cambium is aA. Primary meristemB. Apical meristemC. Secondary meristemD. Intercalary meristem |
| Answer» Correct Answer - C | |
| 1031. |
in autumn or winter, cambium producesA. SapwoodB. Hart woodC. Early woodD. Let wood |
| Answer» Correct Answer - D | |
| 1032. |
cells of Grass leaves which help in minimising cuticular transpiration areA. Bulliform cellsB. Guard cellsC. Secondary meristemD. Endodermal cells |
| Answer» Correct Answer - A | |
| 1033. |
cells of Grass leaves which help in minimising cuticular transpiration areA. Bulliform cellsB. Guard cellsC. Subsidiary cellsD. Endodermal cells |
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Answer» Correct Answer - A Cells of grass leaves which help in minimisign transpiration are bulliform cells. |
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| 1034. |
Intrafascicular cambium is situated inA. Outside the vascular bundlesB. In medullary raysC. Inside the vascular bundlesD. In between the vascular bundles |
| Answer» Correct Answer - C | |
| 1035. |
Seive tubes are the constitutent ofA. WoodB. vascular cambiumC. PhellemD. Bast |
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Answer» Correct Answer - D Sieve tubes are constituent of bast/ phloem. |
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| 1036. |
The acitvity of sieve tubes is remotely controlled by the nucleus ofA. Phloedm paenchymaB. Companion cellsC. Phloem fiberD. Both phloem parnchyma and phloem fibers |
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Answer» Correct Answer - A::D The activity of sieve tubes is reotely controlled by the nucleous of campanion cells. |
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| 1037. |
A leaf showing stmata and cuticle on upper epidermis, raphides in the mesophyll and diaphragm cells, belongs to a plant that probably is aA. MesophyteB. Flating hydophyteC. Submerged hydrophyteD. Succulent xerophyte |
| Answer» Correct Answer - B | |
| 1038. |
Green cells of epidermis areA. Bulliform cellsB. Subsidiary cellsC. motor cellsD. guard cells |
| Answer» Correct Answer - D | |
| 1039. |
Healing of wound in plants takes place by the activity ofA. Ground tissueB. Callus depositionC. Secondary meristemD. Permanent tissue |
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Answer» Correct Answer - B When wound is deep it is healed as follows healthy cells adjacent to the wound form a mass of parenchymatous cells called callus. This callus covers the wound entirely. Thus wound in healed. |
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| 1040. |
Healing of wound in plants takes place by the activity ofA. intercalar meristemB. secondary meristemC. mass meristemD. apical meristem |
| Answer» Correct Answer - B | |
| 1041. |
Wound healing is due toA. Primary meristemB. Secondary meristemC. Ventral meristemD. All of the above |
| Answer» Correct Answer - A | |
| 1042. |
Centripetal and centrifugal xylems are important features ofA. Root and stem respectivelyB. Exarch and endarch respectivelyC. Endarch and exarch respectivelyD. Both (1) and (2) |
| Answer» Correct Answer - D | |
| 1043. |
The cambial ring is generallyA. More active on the innre side than on the outerB. More active on the outer side than the innerC. Equally active towards both sidesD. Equally inactive towards both sides |
| Answer» Correct Answer - A | |
| 1044. |
The length of different internodes in a culm of sugarcane is variable becauseA. size of leaf lamina at the node below each internodeB. intercalary meristemC. shoot apical meristemD. position of axillary buds |
| Answer» Correct Answer - B | |
| 1045. |
The length of different internodes in a culm of sugarcane is variable becauseA. Shoot apical meristemB. Position of axillary budsC. Intercalary meristemD. Size of leaf lamian at the node below each internode |
| Answer» Correct Answer - C | |
| 1046. |
Heart wood is theA. outer part of secondary xylemB. inner part of secondary xyloemC. outer part of secondary phloemD. inner part of secondary phloem |
| Answer» Correct Answer - B | |
| 1047. |
The sugarcane plant hasA. Reticulate venationB. Capsular fruitsC. Pentamerous flowerD. Dump bellshaped gurad cells |
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Answer» Correct Answer - A::D Sugaarcane (monocot , family pacaeae) plant has dumb- bell shaped guard cells. |
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| 1048. |
Bulliform or motor cells take part inA. providing strenght to leavesB. curling of leavesC. drooping of leavesD. protection of leaves |
| Answer» Correct Answer - B | |
| 1049. |
Bulliform or motor cells are present inA. Dicot stemB. Upper epidermis of dicot leavesC. Lower epidermis of monocot leavesD. Upper epidermis of monocot leaves |
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Answer» Correct Answer - D In the upper epidermis, there are some large cells found in groups, which are known as motor cells or bulliform cells. |
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| 1050. |
Bulliform or motor cells are present inA. upper epidermis of dicot leavesB. upper epidermis of monocot leaveC. Lower epidermis of monocot leavesD. Lower epidermis of dicot leaves |
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Answer» Correct Answer - B Bulliform or motor cells occur in upper epidermis of monocot leaves. |
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