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.
| 151. |
The bark of tree comprisesA. All the tissues outside the vascular cambiumB. All the tissues outside the cork cambiumC. Only the corkD. The cork and secondary cortex |
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Answer» Correct Answer - B All dead tissues lying outside the active cork cambium are collectively known as bark. |
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| 152. |
In the following how the sap wood is converted into heart woodA. By degeneration of protoplast of living cellsB. Tylosis fomationC. By deposition of resins, oil , gumsD. All of the above |
| Answer» Correct Answer - D | |
| 153. |
What is /are true about heart wood A. It does not help in water conduction B. It is also called alurnum C. It is dark in colour but very soft D. It has tracheary element which are filled with tannin, resin, etc.A. B, C and DB. A and DC. B and DD. A, B and C |
| Answer» Correct Answer - B | |
| 154. |
When secondary growth is initiated in dicot stem, what will happen first?A. The cells of cambium divide periclinally to form xylem mother cellsB. Interfascicular cambium join with intrafasciciular cambiumC. Parenchymatous cells present between vascular bundles become meristematicD. Pith get obliterated |
| Answer» Correct Answer - C | |
| 155. |
Cotton fiber is basically a type ofA. TrichomeB. ScaleC. Dried seed coatD. Non-glandular hair |
| Answer» Correct Answer - A | |
| 156. |
Vegetative shoot apical meristem I. produces buds, leaves and stem tissues. II. Mostly protected by sepals. III. Protected by young leaves. IV. Produces sepals, petals, stamens and carpels.A. Only IB. I and IIIC. Only IID. Only IV |
| Answer» Correct Answer - B | |
| 157. |
Cork cambium is aA. Secondary meristemB. Apical meristemC. Intercalary meristemD. Primary meristem |
| Answer» Correct Answer - A | |
| 158. |
The waxy substance associated with cell walls of cork cells is or cork cells are imprevious to water becauce of the presence or what is deposited on cork cellsA. CutinB. SuberinC. LigninD. Hemicelllulose |
| Answer» Correct Answer - B | |
| 159. |
The waxy substance associated with cell walls of cork cells is or cork cells are imprevious to water becauce of the presence or what is deposited on cork cellsA. CutinB. SuberinC. LigninD. Hemicellulose |
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Answer» Correct Answer - B After actual falling of leaf, the scar is exposed to air, which develops a primary protective layer by deposition of lignin and suberin on their wall. |
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| 160. |
Growth rings are well marked in trees growing inA. ShimlaB. BombayC. MadrasD. Calcutta |
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Answer» Correct Answer - A Growth rings (Annual rings) are distinct or sharply demarcated in the plants of temperate (cold ) regions (as shimla). |
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| 161. |
monocot root differs from dicot root in havingA. Open vascular bundlesB. Scattered vaascular bundlesC. Well-developed pithD. radially arranged vascular bundles |
| Answer» Correct Answer - C | |
| 162. |
Heart wood is theA. Outer part of secondary xylemB. Inner part of secondary xylemC. Outer part of secondary phloemD. Inner part of secondary phloem |
| Answer» Correct Answer - B | |
| 163. |
The bark of tree comprisesA. All the tissue ourside the vascular cambiumB. All the tissue outside the cork cambiumC. Only the corkD. The cork and secondary cortex |
| Answer» Correct Answer - A | |
| 164. |
Identify P,QltRltS and T in the given T.S. of dicot stem showing secondary growth and select the correct optionsA. `{:(P,Q,R,S,T),("primary phloem","Primary xylem","vascular cambium","secondary xylem","secondary phloem"):}`B. `{:(P,Q,R,S,T),("secondary xylem","Primary xylem","secondary phloem","primary phloem","vascular cambium"):}`C. `{:(P,Q,R,S,T),("primary xylem","secondary xylem","vascular cambium","secondary phloem","primary phloem"):}`D. `{:(P,Q,R,S,T),("primary xylem","Secondary xylem","vascular cambium","Primary phloem","secondary phloem"):}` |
| Answer» Correct Answer - C | |
| 165. |
External protective tissues of plants are (of dicot stem are)A. Cork and pericycleB. Cortex and epidermisC. Pericycle and cortexD. Epidermis and cork |
| Answer» Correct Answer - D | |
| 166. |
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. b, c, a, dB. d, a, c, dC. a, b, d, cD. c, d, b, a |
| Answer» Correct Answer - B | |
| 167. |
The meristem responsible for extrastelar secondary growth in shoot stem isA. fasciular cambiumB. intrafascicular cambiumC. intercalary cambiumD. phellogen |
| Answer» Correct Answer - D | |
| 168. |
Read the following statements and find out the incorrect statement about dic ot rootA. Next to endodermis lies a few layers of thick walled sclerenchymatous cells referred to as pericycleB. The pith is small or inconspicuousC. The parenchymatous cells which lie in between the xylem and phlpoem are called conjuctive tissueD. There are usually two to four xylem and phloem patches |
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Answer» Correct Answer - A In Dicot root, nexy to endoermis lies a few layer of thick walled parenchymatous cells referred to as pericycle. |
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| 169. |
Crok is formed fromA. Cork cambium (phellogen)B. Vascular cambiumC. PhloemD. Xylem |
| Answer» Correct Answer - A | |
| 170. |
In temperate regions, cambium is less active during winter season and forms fewer xylary elemetns that have narrow vessels, this wood is called asA. spring woodB. automn woodC. heartwoodD. sapwood. |
| Answer» Correct Answer - B | |
| 171. |
As secondary growth proceeds, in a dicot stem, the thickness ofA. Sapwood increasesB. Heartwood increasesC. Both sapwood and heartwood increasesD. Both sapwood and heartwood remains the same |
| Answer» Correct Answer - C | |
| 172. |
As secondary growth proceeds, in a dicot stem, the thickness ofA. Heart wood increasesB. Sap wood increasesC. Both increaseD. Both remain the same |
| Answer» Correct Answer - C | |
| 173. |
A dicot root differs from a monocot root in which of the following -A. Presence of piliferous layerB. Presence of exodermisC. Presence of ill-developed pithD. Separate radial vascular bundle |
| Answer» Correct Answer - C | |
| 174. |
Vascular combium is a laterla meristem and gives rise toA. primary xylem and primary phleomB. more of secondary xuylem on inner side and less of secondary phleom on outer sideC. less of secondary phleom on inner side and more secondary xylem on outer sideD. secondary phloem only |
| Answer» Correct Answer - B | |
| 175. |
As secondary growth proceeds, in a dicot stem, the thickness ofA. heartwood increasesB. sapwood increasesC. both increaseD. both remain the same |
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Answer» Correct Answer - a As a result of continous secondary growth in subsequent year , the older part of secondary xylem becomes non - functional . Due to this activities of vessels become blocked by bladder like ingrowths which are clled tyloses . Due to this non - functional xylem becomes hard and blackish in in colour called duramen or heartwood. Now , the function of secondary xylem is continoued by younger rings called sapwood or alburnum with the passage of time and addition of new outer rings of secondary xylem more ringd of sawood changes into heartwood . this is why the heartwood increases in diameter year after year but the sapwood remains almost in the same thickness. |
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| 176. |
Crok cabium is aA. Secondary meristemB. Apical meristemC. Intercalary meristemD. Primary mersitem |
| Answer» Correct Answer - A | |
| 177. |
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. (A),(B),(D),(C)B. (D),(A),(C),(B)C. (D),(C),(A),(B)D. (C),(D),(B),(A) |
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Answer» Correct Answer - B The correct sequence from outerside towards inner side in a wood dicot stem is |
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| 178. |
Which of the following meristems is responsible for extrastelar secondary growth in dicotyledonous stemA. PhellogenB. Intrafascicular cambiumC. Interfascicular cambiumD. Intercalary meristem |
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Answer» Correct Answer - A The extrastelar regions grow simultaneously. The growth of extrastelar region is initiated by the formation of cork cambium of phellogen. |
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| 179. |
In temperate regions, during spring season, combium is very active and produces a large number of cylary elements having vessel with wider cavities.wood formed in this way is called asA. spring woodB. autumn woodC. early woodD. both a and c |
| Answer» Correct Answer - D | |
| 180. |
Waxy coating on epidermis of young stem isA. SuberinB. peridermC. PhellemD. Cuticle |
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Answer» Correct Answer - D Waxy coating on epidermis of youns stem is cuticle |
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| 181. |
monocot root differs from dicot root in havingA. open vascular bundlesB. Scattered vascualr bundlesC. Well developed pithD. Radially arranged vascualr bundles |
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Answer» Correct Answer - C Monocot root diffes from dicot root in having well develop pith |
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| 182. |
Vergin crok isA. The first formed peridermB. A lenticellate phellemC. A nonlenticellate peridermD. The last peridurm |
| Answer» Correct Answer - A | |
| 183. |
As secondary growth proceeds, in a dicot stem, the thickness ofA. Heart wood increasesB. Sap wod increasesC. Both increasesD. Both remain the same |
| Answer» Correct Answer - A | |
| 184. |
Read the following statementsand selectthe correct option Statement-1: Annual rings are distinct in plants growing in temperate regions Statement-2: In temperate regions, the climatic conditions are not uniform through the year.A. Both statement 1 and 2 are correctB. statement 1 is correct but statement 2is incorrectC. Statement 1 is incorrect but statement 2 is correct.D. boths statement 1 and 2 are incorrect. |
| Answer» Correct Answer - A | |
| 185. |
Annual rings are distinct in plants growing inA. Typical regionB. Temperate regionC. GrasslandD. Arctic region |
| Answer» Correct Answer - B | |
| 186. |
Annual rings are distinct in plants growing inA. Tropical regionsB. Arctic regionC. GrasslandsD. Temperate region |
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Answer» Correct Answer - D Annual rings are formed due to variation in climatic conditions of any region. Spring season and autumn season occur in temperate region, thus clear annual rings are formed. |
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| 187. |
Which is correct about transport or conduction of substancesA. Organic food moves upwardly through xylemB. Organic food moves only upwards through phloemC. Inorganic food moves upwrdly and downwardly through xylemD. Organic food moves in multidirections through phloem |
| Answer» Correct Answer - D | |
| 188. |
The annual rings are are distinct in conifers and plants growing inA. tropical regionB. temperate regionC. equatorial regionD. arctive region |
| Answer» Correct Answer - B | |
| 189. |
In dorsiventral leaf, stomataA. Occur on both the layers of epidermisB. Occur ion lower epidermisC. Occur in pits on the upper epidermisD. Don not occur on the epidermis |
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Answer» Correct Answer - B In dorsiventral leaf stomata occur on lowser epidermis . |
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| 190. |
Stomata in grass leaf areA. Dumbd bell shapedB. Kidneyv shapedC. RectangularD. Barrel shaped |
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Answer» Correct Answer - A Stomata in grass leaf are dumb bell shaped. |
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| 191. |
In a dorsiventral leaf, stomata present onA. adaxial sidesB. abaxial sidesC. adaxial and abaxial sidesD. absent |
| Answer» Correct Answer - B | |
| 192. |
In conifers fibres are likely to be absent inA. secondary phloemB. secondary xylemC. prmary phloemD. leaves |
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Answer» Correct Answer - B Fibres occur in all those parts where mechanical strength is required i.e., leaces, petioles, cortex, xylem, phloem, etc. In confifers, they are likely to be absent in secondary xylem. |
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| 193. |
Stomata in grass leaf areA. Barrle shapedB. rectangularC. Kidney shapedD. Dumb-bell shapaed |
| Answer» Correct Answer - D | |
| 194. |
Assertion : Cuticel is also present in lower epidermal region of the leaf. Reason : The lower epidermis contains a large numbers of stomata.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both the assertion and reason are true but the reason is not a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If both the assertion and reason are false |
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Answer» Correct Answer - B A distinct layer of cuticle is present in the lower epidermis. The cuticle is , however, less developed than at the upper epidermis. The lower epidermis contains a large number of pores called stomata or stomates. They lead internally into substomatal cavities. |
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| 195. |
The given figure shows T.S of helianthus leaf with various parts labelled as A, B, C, D, E, F and G. identify the parts and select the correct optionA. A-Epidermic, B-Spongy parenchyma, C-Palisade parenchyma, D-stomata, E-Phloem, F-XylemB. A-Epidermis, B-Palisade parenchyma, C-Spongy parenchyma, D-Stomata, E-Xylem, F-PhloemC. A-Epidermis, B-Palisade parenchyma, C-spongy parenchyma, D-Stomata, E-Endodermis, F-XylemD. A-Epidermis, B-Palisade parenchyma, C-Spongy paranchyma, D-stomata, E-Phloem, F-Xylem |
| Answer» Correct Answer - D | |
| 196. |
Identify the given figure and select the correct labels for A,B and CA. `{:(A,B,C),("Callose","Xylem parenchyma","Xylem vessel"):}`B. `{:(A,B,C),("Callose","Phloem parenchyma","Phloem vessel"):}`C. `{:(A,B,C),("Tylosis","Xylem parenchyma","Xylem vessel"):}`D. `{:(A,B,C),("Tylosis","Phleom parenchyma","Phloem vessel"):}` |
| Answer» Correct Answer - C | |
| 197. |
The following diagram shows the Ts of dicot root, certain parts have been indicated by letters, Select the option in which these latters have been correctly matched with the parts which they indicate A. A= Cortex, B= Epiblema, C= Pith, D=Endodermis, E= Root hair, F=PericycleB. A=Epiblema, B=Endodermis, C= Cortex, D= Root hair, E=Pith, F=PericycleC. A=Cortex, B=Pith, C=Epiblema, D=Endodermis, E=Root hair, F=PericycleD. A=Epiblema, B=Root hair, C=Cortex, D=Endodermis, E=Pith, F=pericycle |
| Answer» Correct Answer - A | |
| 198. |
Fibres are likely to be absent inA. secondary phloemB. secondary xylemC. primary phloemD. leaves |
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Answer» Correct Answer - D Leaves The leaves of the plants are mainly the organ of photosynthesis It has specialised parenchymatous cells having chlorophyll. It does not have any fibrous cells. |
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| 199. |
In the diagram of lenticel identify the parts as A, B, C, D A. A-phellem, B-periderm, C-phellogen, D=phellodermB. A-phellem, B-complementary cells, C-phelloderm, D-peridermC.D. A-complementary cells, B-phellem, C-periderm, D=phelloderm |
| Answer» Correct Answer - A | |
| 200. |
Hypodermis is _____in sunflower stem and ______in maize stemA. parenchymatous, collenchymatousB. collenchymatous, sclerenchymatousC. sclerenchymatous, collenchymatousD. sclerenchymatous, parenchymatous |
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Answer» Correct Answer - B In sunflower, hypodermis is made up of collenchyma, which may be green. In maize, hypodermis is formed of non-green sclerenchyma tissue. |
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