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.
| 301. |
Cambium ring in dicot stem consist ofA. Interfascicular cambiumB. Intrafascicular cambiumC. Both A and BD. Phelloderm |
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Answer» Correct Answer - C Cambium ring consists of interfascicular cambium and intrafascicular cambium. |
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| 302. |
Find the correct match, A. `atoi, bto iii, cto ii, d toiv`B. `atoi, bto ii, cto iii, d toiv`C. `atoiii, bto ii, cto i, d toiv`D. `atoiv, bto ii, cto iii, d toi` |
| Answer» Correct Answer - D | |
| 303. |
Vascular cambium are examples ofA. Lateral meristemB. Apical meristemC. Elements of xylem and phloemD. Intercalary meristem |
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Answer» Correct Answer - A Lateral meristems occur laterally in the axis, parallel to the sides of stems and roots . The cambium of vascular bundles (fascicular, interfascicular and extrastelar cambium) and the cork cambium (phellogen) belongs to this category. |
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| 304. |
Tracheids differ from other tracheary elements inA. Being lignifiedB. Having casparian stripsC. Being imperforateD. Lacking nucleus |
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Answer» Correct Answer - C Tracheids diffe from other trachery elements in being imperforate. |
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| 305. |
Which of the following elements has its end walls perforatedA. TracheidB. VesselC. FiberD. Scleried |
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Answer» Correct Answer - B The opening in vessel element walls are called perforations, which may be simple perforation or multiple perforations. |
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| 306. |
The trees growing in desert willA. Show alternate rings of xylem and sclerenchymaB. Have only conjunctive tissue and phloem formed by the activity of cambiumC. Show distinct annual ringsD. Not show distinct annual rings |
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Answer» Correct Answer - D Because climatic variations (autumn and spring seasons ) are absent in deserts. |
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| 307. |
Vascular bundles grow fromA. ProtodermB. PerdermC. Ground meristemD. Procambium |
| Answer» Correct Answer - D | |
| 308. |
Cork combium representsA. Secondary meristemB. Primary meristemsC. Intecalary meristemD. Apical meristem |
| Answer» Correct Answer - A | |
| 309. |
Cambium prduces growth inA. BranchesB. GirthC. PithD. cortex |
| Answer» Correct Answer - B | |
| 310. |
Quiescent centre is found inA. StemB. RootC. LeavesD. None of these |
| Answer» Correct Answer - D | |
| 311. |
Which one of the following shwo origin and evolution of stelesA. BryophytesB. PteridophytesC. GymnospermsD. Angiosperms |
| Answer» Correct Answer - C | |
| 312. |
Maximum number of vascular bundles are present inA. monocot stemB. monocot leafC. dicot stemD. dicot root |
| Answer» Correct Answer - A | |
| 313. |
The living mechanical tissue providing tensile strenght isA. sclerenchymaB. parenchymaC. collenchymaD. sclereid |
| Answer» Correct Answer - C | |
| 314. |
Write two features of epidermal cels of plants. |
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Answer» (i) They are the parenchymatous cells which have a small amount of cytoplasms lining the cell wall and a large vacuole. (ii) They are compactly arranged to form a continous layer of epidermis. |
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| 315. |
Define stomatal apparatus. |
| Answer» The stomatal aperture, gurard cells and the surrounding subsidiary cells are together called stomatal appartus. | |
| 316. |
What are the parts of cortex in a dicotyledon stem and a monocotyledon root? |
| Answer» Cortex is divided into three sub-zones in a dicotyledon stem, i.e., hypodermis, general cotrext and endodermis and into general cortex and endodermis in a monocotyledon root. Hypodermis is absent in roots of both dicots and monocots. | |
| 317. |
Vascular bundles are scattered and closed inA. monocot rootB. dicot rootC. dicot stemD. monocot steam |
| Answer» Correct Answer - D | |
| 318. |
Lenticles are involved inA. Gaseous exchangeB. Food transportC. PhotosynthesisD. Transpiration |
| Answer» Correct Answer - A | |
| 319. |
The periderm includesA. Secondary pholemB. CorkC. CambiumD. All of these |
| Answer» Correct Answer - B | |
| 320. |
Lateral roots arise fromA. cortexB. EndodermisC. Cork cambiumD. Pericycle |
| Answer» Correct Answer - d | |
| 321. |
Leteral roots arise from primorida developed by division ofA. pericycle cells lying opposite to protoxylem pointsB. pericycle cell lying between two protoxylem pointsC. endodermal cell lying between two protoxylem pointsD. endodermal cells lying opposite to protoxylem points |
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Answer» Correct Answer - B Root is that part of plant body which grows and down into earth. The primary roots develop from radicle and gives secondary and tertiary roots. Lateral roots develop endogenously, i.e. from pericycle between two protoxylem. |
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| 322. |
An example of a fistular (i.e. with central cavity) monocot stem isA. Zea maysB. TriticumC. AsparagusD. Dracaena |
| Answer» Correct Answer - B | |
| 323. |
Medullary rays present in vascular stem bundle ofA. Sunflower stemB. Canna stemC. Asparayus stemD. Triticum stem |
| Answer» Correct Answer - A | |
| 324. |
heart wood differs from sapwood inA. The absence of vessels and parenchymaB. Having dead and non-conducting elementsC. Being susceptible to pests and pathogensD. The presenc e of rays and fibers |
| Answer» Correct Answer - B | |
| 325. |
What is the characteristics of a vascular bundle of monocot stem -A. Open and surrounded by a selerenchymatous bundle sheathB. Closed and not surrounded by bundle sheatC. Closed and surrounded by bundle sheatD. Open and not surrounded by a bundle sheat |
| Answer» Correct Answer - C | |
| 326. |
Annual rings are the bands ofA. Secondary cortex and corkB. Secondary vascular tissuesC. Secondary xylem and medullary raysD. Secondary phloem and medullary rays |
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Answer» Correct Answer - B Spring wood + Autumn wood of a year constitute annual ring. Spring and Autumn wood is the part of seondary xylem formed during spring and autumn. The amount of wood is affected by the activity of cambium. |
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| 327. |
The albuminous cells occur in theA. DicotsB. MonocotsC. GymnospermsD. All of these |
| Answer» Correct Answer - c | |
| 328. |
Which will decay faster if exposed freelyA. SapwoodB. SoffwoodC. Wood with lot of fibresD. Heartwood |
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Answer» Correct Answer - a In old trees , secondary xylem or wood gets differentiation into outer light coloured functional sapwood or alburnum and inner dark coloures non- functional heartwood or duramen . Heartwood is stronger and highly durable because of presence of oils , resins , gums , tannins and tyloses which are plugged into the tracheids and vessel elements . As the secondary growth takes place size of heart wood increases because of concersion of inner alburnum (sapwood) into it. |
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| 329. |
passage cells occur inA. Monocot rootB. Dicot rootC. Monocot stemD. Both 1 and 2 |
| Answer» Correct Answer - D | |
| 330. |
The bicollateral vascular bundle is the characteristic feature of plants belonging to the familyA. CruicferaeB. LiliaceaeC. CucurbitaceaeD. Malvaceae |
| Answer» Correct Answer - C | |
| 331. |
Which of the following is a complex tissueA. ParenchymaB. CollenchymaC. XylemD. Schlerenchyma |
| Answer» Correct Answer - C | |
| 332. |
Which of the following is a complex tissue ?A. ParenchymaB. PholemC. XylemD. Both B and C |
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Answer» Correct Answer - D Phloem and xyme are complex tissues |
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| 333. |
For a successful graft, the adhesion between stock and scion is a must. Which one of the following is the earliest event towards a good graftA. Production of plasmodesmata in the cells at the interface of stock and scionB. Coordinated differentiation of vascular tissue between the stock and scionC. Regeneration of cortex and epidermis over the union of stock and scionD. Production of callus tissue between the cells of stock and scion |
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Answer» Correct Answer - D New cells form a mass of parenchymatous cells known as callus. |
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| 334. |
In the isobilateral leafA. The stomata are present on both the surfaces of the epidermisB. Meosophyfll is not differentiated in to palisade and spong parenchymaC. The parallel bvenation is reflected in the near similar size of vascular bundles (except in main veins)D. All of the above statements are correct. |
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Answer» Correct Answer - D In the isobilateral leaf The stomato are present on both the surface of the epidermis Mesophyll ios not diffeentiated in to palisade and spongy parenchyma The parallel venation is reflected in the near simolar size of vascular bundles (expect in main veins) |
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| 335. |
The quiescent centre in root meristem serves as aA. Site for stronge of food which is utilized during maturationB. Reservoir of growth hormonesC. Reserve for the preplenishement of the damaged cells of the meristemD. Region for the absorption of water |
| Answer» Correct Answer - C | |
| 336. |
The quiescent centre in root meristem serves as aA. Site for storage of food . Which is utilized during maturationB. Reserve of growth hormonesC. Reserve for replenishment of damaged cells of the meristemD. Region for absorption of water |
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Answer» Correct Answer - C Quiescent centre having low rate of cell division and acts as reservoir of active initials. |
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| 337. |
which of the following plants grow by a single "apical cell"A. MonocotsB. DicotsC. GymnospermsD. Bryophytes |
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Answer» Correct Answer - D Bryophytes grow by a single apical cell. Position of apical cells may either be strictly terminal or subterminal. |
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| 338. |
Which structure is not found in the leaves of a bean plantA. Guard cellB. ChloroplastC. PhloemD. Lenticel |
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Answer» Correct Answer - D Lenticels are some loosely arranged areas in the periderm. Lenticels are characteristics of woody stem. Lenticels are not found in leaves. |
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| 339. |
Select the mismatched pair out of the followingA. Radial vascular bundle-Xylem and phloem on different radiiB. Bicollateral vascular bundle-Phloem present on both dides of xylemC. Amphivasal vascular bundle- Phloem surrounds xylemD. Conjoint vascular bundle-Xylem and phloem on same radii |
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Answer» Correct Answer - C In amphivasal or laptocentric vascular bundles, xylem surrounds phloem e.g., Dracaena, Yucca |
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| 340. |
Select the mismatched pairA. Root hair-UnicellularB. Stem hair-multicellularC. trichomes-cause water lossD. guard cells-regulate opening and closing of stomata |
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Answer» Correct Answer - C Trichomes are unicellular or multicellular, branched or unbranched outgrowths which are strictly epidermal in origin. Being the outermost layer trichome is protective in nature. With the help of cuticle it checks the rate of water loss from aerial parts. Trichomes present on the surface of some seesd and fruits help in their dispersal. |
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| 341. |
Xylem position in secondary xylem isA. ExarchB. EndarchC. MesarchD. None of these |
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Answer» Correct Answer - D Because there is no variation in protoxylem and metaxylem in cells of secondary centre. |
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| 342. |
Which of the following exemplifies emergences?A. Root hairB. Stigmatic papillaeC. Prickles of rosa indicaD. oil glands on fruit skins |
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Answer» Correct Answer - C Prickles are an example of emergences. Emergences are multicellular epidermal outgrowths which also contain some inner tissues. Theya re sharp and stiff outgrowths e.g., pricles of Rosa indica. |
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| 343. |
Quiescent centre is found inA. Stem tipB. Root tipC. Leaf tipD. None of these |
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Answer» Correct Answer - B At the apex of roots some cells are not dividing, this region is called quiescent centre. |
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| 344. |
Which of the following causes almost unbearable irritation of the skin?A. lint of gossypiumB. staminal hair tradescantiaC. Prickles of rosa indicaD. stinging hair of urtica dioica |
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Answer» Correct Answer - D Stinging hair of urtica dioca are hollow hair that contains siliceous tips and enclose a poison which is injected into the skin of animals rubbing against them and causing unbrearable pair or irritation. |
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| 345. |
Angular collenchyma occurs inA. CucurbitaB. TagetesC. AlthaeaD. Salvia |
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Answer» Correct Answer - b Depending upon the thickening , collenchyma is of three types - (a) Angular - thickening at the angles , e.g . Stem of tomato , Datura , Tagetes (marigold) , (b) Lamellar - thickening on tangential walls , e.g. stem of sunflower, ( c) intercellular spasec , e.g. stem of Cucurbita. |
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| 346. |
Find out incorrect statement about dorisiventral leaf.A. The adaxial epidermis generally bears more stomata than the abadxial epidermis .The abaxial epidermis may even lack stomataB. The tissue between the upper and the lower epidermis is called mesophyll which is made up of parenchgymaC. The veins vary in thickness in the reticlulate venation of the dicot leavesD. The vascular bundles are surrounded by a layer of thick walled bundle sheath cells |
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Answer» Correct Answer - A In dorsiventral leaf, the abaxial epidermis generally bears mopre stomata than the adaxial epidermis The adaxial epidermis may even lack stomata. |
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| 347. |
In dicot leaves size of vascular bundles are dependent on theA. Size of the leavesB. Size of the mesophyll cellsC. Size of the veinsD. Size of the bundle sheath cells |
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Answer» Correct Answer - C In dicot leaves size of vascualr bundles are dependent on the size of the veins. |
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| 348. |
in monocotsA. Leaves have reticulate venationB. Stems have anula rigsC. Seeds have two storage organsD. Stems have scattered conducting stands |
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Answer» Correct Answer - D In monocots stems have scattered conducting strands. |
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| 349. |
Commericial cork is obtained fromA. Berberis/ BarberryB. Salix/WillowC. Qurecus/OakD. Betual/Birch |
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Answer» Correct Answer - C Commercialk cork is obtained from Quercus/oak. |
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| 350. |
Safranine stains which elements of the tissueA. Starch elementsB. Lignified elementsC. Protein elementsD. Hard bast |
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Answer» Correct Answer - B Saffranine stains lignified elements of the tissue. |
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