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.
| 401. |
The valamen of orchid root is derived from theA. Phellogen of rootB. Plerome of rootC. Dermatogen of rootD. Periblem of root |
| Answer» Correct Answer - C | |
| 402. |
The central region of root apex containing less active cells is known asA. PleromeB. DermatogenC. PeriblemD. Quiescent zone |
| Answer» Correct Answer - D | |
| 403. |
The organizatin of shoot apex into tunica and corpus is determined largely on the basis ofA. Regions of meristematic activityB. Planes of cell divisionC. Rate of shoot tip growthD. Phase of cell division |
| Answer» Correct Answer - B | |
| 404. |
Which of the following is true for endarch type of primary xylem?A. Protoxylem lies towards the periphery of the organB. Metaxylem lies towards the periphery of the organC. Metaxylem lies towards the pith of the organD. Protophloem lies towards the path of the organ |
| Answer» Correct Answer - B | |
| 405. |
Memebers of Winteracae, Tetracentraceae and trochodendraceaeA. Do not have tracheidsB. Do not have albuminous cellsC. Do not have vesselsD. More than one option is correct |
| Answer» Correct Answer - D | |
| 406. |
Which of the following vascualr bundles are always open?A. RadialB. CollateralC. BicollateralD. Concentric |
| Answer» Correct Answer - C | |
| 407. |
When protoxylem faces pericycle , it is called-A. EndarchB. MesarchC. ExarchD. Polyarch |
| Answer» Correct Answer - C | |
| 408. |
Passage cells are found in endodermis of -A. Dicot stemB. Monocot stemC. Dicot rootD. Moncot root |
| Answer» Correct Answer - D | |
| 409. |
Sugar transport elements of gymnosperms & pteridophytes are -A. Sieve cellsB. Sieve elementsC. Sieve tubesD. Sieve tube elements |
| Answer» Correct Answer - A | |
| 410. |
Pith is produced byA. Ground meristemB. ProcambiumC. PeriblemD. Dermatogen |
| Answer» Correct Answer - A | |
| 411. |
Passage cells are thin walled cells found inA. endodermis of roots facilitating rapid transport of water from cortex to pericycleB. phloem elements that serve as entry points for substances for transport to other plant partsC. testa of seeds to enable emergence of growing embryonic axis during seeds germinationD. central region of style through which the pollen tube grows towards the ovary |
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Answer» Correct Answer - A In roots, endodermis is the innermost layer of cortex. Some of the endodermal cells present opposite to the xylem patched are thin-walled and are called passage cells or transfusion cells. Passage cells help in the transfer of water and dissolved salts from the cortex directly into the xylem and ultimately to the pericycle. |
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| 412. |
Aerenchyma is present in which of the following plants? I. Neptunia II. Potamogeton III. Bryophyllum IV. VallisneriaA. I, II and III are correctB. I and II are correctC. II and IV are correctD. I and III are correct |
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Answer» Correct Answer - C Aerenchyma are parenchymatous or thin-walled cells with air cavities. They are well-developed in hydrophytes (e.g. Hydrilla, Vallisneria, Potamogeton, etc.), These help in buoyancy or floating. |
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| 413. |
Polyarch conditions is found inA. monocot rootB. dicot rootC. monocot stemD. dicot stem |
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Answer» Correct Answer - A Depending upon the number of protoxylem elements, the roots are monarch (having single protoxylem group), diarch, triarch, tetrach, pentarch, hexarch and polyarch. The dicot roots show mono to hexarch condition, whereas the monocot roots are hexa to polyarch. When the protoxylem elements lie towards the centre and metaxylem at the periphery, the condition is said to be endarch, e.g. stem. |
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| 414. |
Aerenchyma is helpful to plants by -A. Providing buoyancy in hydrophytesB. Promoting photosynthesisC. Giving mechanical stenght to plantsD. Giving flexibility to plants |
| Answer» Correct Answer - A | |
| 415. |
Aerenchyma is found inA. LithophtesB. HydrophytesC. SciophytesD. Xerophytes |
| Answer» Correct Answer - D | |
| 416. |
Callose plug and p-proteins are associated withA. Companion cellsB. Sieve tubeC. Phloem parenchymaD. Trachea |
| Answer» Correct Answer - B | |
| 417. |
Phloem parchyma is absent inA. Dicots and few monocotsB. MonocotsC. Monocots and dorsiventral leafD. Gymnosperms |
| Answer» Correct Answer - B | |
| 418. |
The wood of gymnosperms is known as soft wood becauseA. It is very softB. It appears lik a sponge C. It can be bent easilyD. It does not process vessels |
| Answer» Correct Answer - D | |
| 419. |
In plants having longest vessel, oil glands are formedA. LysigenouslyB. SchizogenouslyC. SchizolysisgenouslyD. None of these |
| Answer» Correct Answer - A | |
| 420. |
The wood of gymnosperms is known as soft wood becauseA. It is very softB. It appears lik a spongeC. It can be bent easilyD. It does not process vessels |
| Answer» Correct Answer - D | |
| 421. |
Gymnospermic wood is soft wood becauseA. it is very sof lie a spongeB. it is without fobers and vesselsC. it is nonporus and parenchymatousD. all the above |
| Answer» Correct Answer - B | |
| 422. |
Vascular tissue of monocot root isA. collateral, open diarch and endarchB. radial, open tetrach an exarchC. radial, open and endarchD. radial, closed and exacrch |
| Answer» Correct Answer - D | |
| 423. |
Vascular bundle in monocotyledons are considered closed, whenA. There are no vessels with perforationsB. Xylems is surrounded all around by phloemC. A bundle sheath surrounds each bundleD. Cambium is absent |
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Answer» Correct Answer - D Vascular bundles in monocotyledons are considered closed bueacuise cambium is absent |
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| 424. |
Dorsiventral leaf hasA. Stomata on both sidesB. Stomata on the lower surfaceC. Stomata on the upper surfaceD. No stomata |
| Answer» Correct Answer - A | |
| 425. |
In the leaf vascular bundles are found in theA. VeinsB. Palisade tissueC. Lower epidermisD. Upper epidermis |
| Answer» Correct Answer - A | |
| 426. |
vascular bundles occur in a leafA. Entire laminaB. Palisade parenchyumaC. Spongy parenchymaD. Veins and veinlets |
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Answer» Correct Answer - D Vasular bvundles occur in a leaf in veins and veinlets |
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| 427. |
Grafting is not possible in monocots because theyA. Have scattered vascular bundlesB. Have parallel venationC. Are herbaceousD. Lack cambium |
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Answer» Correct Answer - D A new veriety is produced by joining parts of two different plants (with the help of cambia) is called grafting. In monocots cambium is absent hence the parts of two different plants are unable to joint each other. |
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| 428. |
Grafting is not possible in monocots because theyA. they lack cambiumB. they are herbsC. they have few vascular bundlesD. none of the above |
| Answer» Correct Answer - A | |
| 429. |
Vessels are found inA. All pteridophyaB. All angiospermsC. Some gymnospermsD. Both 1 and 2 |
| Answer» Correct Answer - C | |
| 430. |
Passage cells are found inA. Dicot stemB. Aerial rootC. Monocot rootD. Monocot stem |
| Answer» Correct Answer - A | |
| 431. |
Which is an example of secondary meristem ?A. XylemB. PheloemC. PhellemD. cork cambium |
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Answer» Correct Answer - A::D Cork cambium is an example of secondary meristem. |
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| 432. |
motor cells take part inA. GuttatioonB. TranspirationC. InrollingD. All of the above |
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Answer» Correct Answer - C Motor cells take part in inrolling. |
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| 433. |
Vessels are major water conducting cells inA. Xylem of angiospermsB. Xylem of gymnospermsC. Both 1 and 2D. None of these |
| Answer» Correct Answer - A | |
| 434. |
Vessels are major water conducting cells inA. Dicots onlyB. Monocots onlyC. AngiospermsD. Pteridophytes and gymnosperms |
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Answer» Correct Answer - C Vessels are major water conducting cells in angiousperms. |
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| 435. |
radial vascular bundles occur inA. Dicot rootB. Monocot rootC. All rootsD. Dicot stem |
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Answer» Correct Answer - C Radial vascular bundles occur in all roots (docot root and monocot root). |
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| 436. |
Vascular bundles in dicot stem areA. Conjoint and collateralB. Conjoint and closedC. Conjoint, collateral and openD. Collateral and open |
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Answer» Correct Answer - C Conjoint : A vascular bundle having both xylem and phloem together, is called conjoint. Collateral : A vascular bundle in which the phloem lies towards outer side and xylem towards inner side, is called collateral e.g., Sunflower. |
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| 437. |
Pith is a central part of the ground tissue generally made up ofA. CollenchymaB. ParenchymaC. ChlorenchymaD. Sclerenchyma |
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Answer» Correct Answer - B Pith or central poart of ground tissue is made of parencyma. |
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| 438. |
Separate xylem and phloem bundles are know asA. RadialB. AmphivasalC. CollateralD. Bicollateral |
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Answer» Correct Answer - A Separate xylem and phlopem bundfles are known as Radial. |
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| 439. |
Which of the followong sttements is true?A. Collenchyma occurs in layers below epidermis in monocot plantsB. Xylem parenchyma cells are living thin walled and lignified fibreC. Ssclerechyma cells are usually dead and without protoplastsD. Companion cells are specialized sclerenchyma cells |
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Answer» Correct Answer - C Collenchyma occurs in layer below epidermis in dicot plants. Xylem parnechyma cells are living thin wlaled and cellulosic. Sclerenchyma cells are usually dead and withouty protoplasts. ltbvrgt Companion cells are specialized paenchyma cells. |
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| 440. |
Which one of the following statements is true ?A. The collenchyma occurs in layers below the epidermis in monocotyledonous plantsB. Sclerenchyma cells are usually dead and without protoplastsC. Xylem parenchyma cells are living and thin-walled and their cell walls are made up of ligninD. The companion cells are specialised sclerenchymatous cells |
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Answer» Correct Answer - B Sclerenchyma are considered thick-walled lignified supportive tissue characterised by the absence of living protoplast. Their principal function is to provide mechanical support. |
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| 441. |
Which one of the following is not a lateral meristemA. Intrafascicular cambiumB. Interfascicular cambiumC. PhellogenD. Intercalary meristem |
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Answer» Correct Answer - D Intercalary meristems are present in apical meristem only. These are separated from the apex during the growth of axis and formation of permanent tissues . |
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| 442. |
The beneficial use of epidermal layer isA. bast fibreB. mesocarpC. cotton fibreD. jute |
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Answer» Correct Answer - C Cotton is chiefly composed of epidermal hairs of seeds. Chemically it is cellulose. |
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| 443. |
Which of the following figure of dicot stem is correctly labelledA. B. C. D. |
| Answer» Correct Answer - B | |
| 444. |
The following figure is old typical dicot root, Identify A, B, C and DA. A-Secondary phloem, B- Primary xylem, C-Primary phloem, , D-Vascular cambiumB. A-Primary phloem, B-Primary xylem, C- Secondary phloem , D-Vascular cambiumC. A- Secondary phloem , B-Vascular cambium, C-Primary phloem, D-Primary xylemD. A-Primary phloem, B-Vascular cambium, C-Secondary phloem, D-Primary xylem |
| Answer» Correct Answer - D | |
| 445. |
The cells absent in phloem of gymnosperms areA. albuminous cellsB. companion cellsC. phloem parenchymaD. phloem fibres |
| Answer» Correct Answer - B | |
| 446. |
Which of the following is correct sequence of layers in typical monocot root (from outer surface to inside)A. Pericycle, cortex , endodermis, epiblemaB. Epiblema, endodermis, cortex, pericycleC. Epiblema, cortex, endodermis, pericycleD. Epiblema, pericycle, cortex, endodermis |
| Answer» Correct Answer - C | |
| 447. |
Which of the following is seen in a monocot rootA. Large pithB. Vascular cambiumC. Endarch xylemD. Medullary ray |
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Answer» Correct Answer - A In monocot root large pith, made up of loosely arranged parenchymatous cells with abundant starch grains. |
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| 448. |
The large , empty and colourless cells present at intervals on the upper surface of grass leaf are calledA. Bulliform cellsB. Palisade parenchymaC. Spongy parenchymaD. Accessory cells |
| Answer» Correct Answer - A | |
| 449. |
Pith cells are found inA. EpidermisB. EndodermisC. PericycleD. Lenticels |
| Answer» Correct Answer - B | |
| 450. |
Read the following statements (i). Multicellular epidermal hair (ii). Collenchhymatous hypodermis (iii). Pith present (iv). Vascular bundles present in a ring i.e., eustele above given features describe which of the following plant parts?A. Monocot stemB. Monocot rootC. Dicot stemD. Dicot root |
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Answer» Correct Answer - C The epidermis of dicot stem bears several unbranched multicellular hair or thichomes. The hypodermis is made of 3-4 layered sub-epidermal collenchyma tissue. Vascular strand is in the form of eustele or a ring of vascular bundles present around the central pith and inner to the pericycle. |
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