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.
| 451. |
A root hair is formed byA. Epidermal cellB. Endodermal cellC. Cortical cellD. Pericycle cell |
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Answer» Correct Answer - A Root hair is outgrowth of epidermal cell. |
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| 452. |
Amphivasal vascular bundles are found inA. Triticum and ZeaB. Dracaena and YoccaC. Cucurbita and HelianthusD. None of the above |
| Answer» Correct Answer - B | |
| 453. |
Vascular bundle is enclosed within a well developed sclerechymatous sheath inA. monocot stemB. dicot stemC. monocot rootD. dicot root |
| Answer» Correct Answer - A | |
| 454. |
Vascular bundle is enclosed within a well developed sclerechymatous sheath inA. monocot stemB. dicot stemC. monocot rootD. dicot dicot |
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Answer» Correct Answer - A In most monocot stems, a sclerenchymatous bundle sheath is generally present on the outside of each vascular bundle. |
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| 455. |
In monocotyledenous leaf, the gurard cells areA. kidney shapedB. dumbel shapedC. columnarD. rectangular |
| Answer» Correct Answer - B | |
| 456. |
Flesh of guava, apple pear and spota fruits is gritty and full ofA. scelenchyma fibresB. scelrenchyma sclereidsC. collenchyma and ligninD. (1) and (2) both |
| Answer» Correct Answer - B | |
| 457. |
The presence of lignin in a cell is a characteristic ofA. PhloemB. Woody tissueC. All soft tissueD. Cork |
| Answer» Correct Answer - B | |
| 458. |
Main wate-condicuting element of xylem in homoxylous plants isA. TracheaB. VesselC. TracheidD. Xylem parenchyma |
| Answer» Correct Answer - C | |
| 459. |
Vessells angiosperms areA. TepacenpaceaeB. TrochodendraceaeC. WinteraceaeD. All of these |
| Answer» Correct Answer - D | |
| 460. |
Main wate-condicuting element of xylem in homoxylous plants isA. TracheaB. VesselC. Tracheid D. Xylem parenchyma |
| Answer» Correct Answer - C | |
| 461. |
Main wate-condicuting element of xylem in homoxylous plants isA. Tracheary elementB. VesselC. TracheidD. Xylem parenchyma |
| Answer» Correct Answer - C | |
| 462. |
The pericycle of roots is never sclerenchymatous because itA. Does not act as a mechanicla tissue in rootsB. It the place of the orgin or root branchesC. Gives rise to root hairD. Gives rise to root hair (when the root is young) and root branches (at maturity) |
| Answer» Correct Answer - B | |
| 463. |
In trees, death of protoplasts is essential for a vital function such asA. Food transportB. Water transportC. Both 1 and 2D. Stomatal movements |
| Answer» Correct Answer - B | |
| 464. |
Death of protoplasm is a prerequisite for a vital function likeA. transport of sapB. transport of foodC. absorption of waterD. gaseous exchange |
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Answer» Correct Answer - a Certain cells get lignified , leading to death of protoplasm such as xylem cells . Xylem cells are dead , i.e. devoid of protoplasm , and performs the function of conducting water or sap inside the plant. |
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| 465. |
Largest number of chloroplast is found inA. Palisade tissueB. Spongy tissueC. Transfusion tissueD. Bundle sheath cells |
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Answer» Correct Answer - A Palisade tissue are elongated columnar cells without intercellular spaces. These cells have chloroplasts. They take part in photosynthesis. |
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| 466. |
Which charcter is not associated with plant where shull studies inbreeding depression while Miller and Letham extracted a hormone from its seeds ?A. Atactostele in stemB. Bundle sheath in leafC. Chromosome number 30 in endospermD. Medulla absent in root |
| Answer» Correct Answer - C | |
| 467. |
Generally hypodermis in monocots is composed ofA. ParenchymaB. SclerenchymaC. CollenchymaD. Chlorenchyma |
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Answer» Correct Answer - B Hypodermis is collenchymatous (green) in dicot stem and sclerenchymatous (non-green)in monocot stem. |
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| 468. |
Phloem of monocots generally lacksA. sieve tubesB. phleoem fibresC. phloem parenchymaD. companion cells |
| Answer» Correct Answer - C | |
| 469. |
Pronous and hard wood plants belong toA. gymonospermsB. moncotsC. dicotsD. trachephytes |
| Answer» Correct Answer - C | |
| 470. |
A secondary meristematic tissue can deelope due to the resumption of power of division inA. parenchyma and sclerenchymaB. parenchyma and collenchymaC. Collenchyma and sclerenchymaD. Collenchyma and tracheids. |
| Answer» Correct Answer - B | |
| 471. |
Which of the following supporting tissues have cells with unequally thickened wallsA. FibresB. SclereidsC. CollenchymaD. All the above |
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Answer» Correct Answer - C Collenchyma tissue is made up of elongated cells with thickening at corners. |
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| 472. |
Aerenchyma is formed in the tissue ofA. Sclerenchyma ParenchymaB. ParenchymaC. PhloemD. None of these |
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Answer» Correct Answer - B Parenchyma containing air spaces is known as aerenchyma. It provides buoyancy to hydrophytes. |
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| 473. |
Which of the following tissue systems constitutes bulk of the plant body?A. Epidermal tissue systemB. Ground tissue systemC. vascular tissue system consists of complex tissues i.e., xylem and phloem.D. both a and c |
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Answer» Correct Answer - B Ground tissue system includes all the tissues of plant body except epidermal tissue system and vascular tissues. It forms the bulk of body and consists of mainly parenchymatous, collenchymatous, chlerenchymatous, glandular and laticifierous tissues. |
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| 474. |
Stomata which remain surrounded by a pair of subsidiary cells whose common wall is at right angles tio guard cells are calledA. anomocyticB. aisocyticC. paracyticD. diacytic |
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Answer» Correct Answer - D Diacytic (caryophyllaceous) type of stomata are surround by 2 subsidiary cells. Diacytic subsidiary cells are arranged at right angles to the stomata cells e.g., saponaria |
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| 475. |
Starch is mainly manufacture byA. Palisade parenchymaB. Spongy parenchymaC. Guard cellsD. Vascular bundle |
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Answer» Correct Answer - A Palisade parenchyma are elongated columnar cells without intercellular space. These have chloroplast in them and generally arranged in two layers. |
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| 476. |
Read the different components from (a) to (d) in the lists given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.A. Secondary cortexB. WoodC. Secondary phloem + xylemD. Phellem |
| Answer» Correct Answer - D | |
| 477. |
Collenchymatous tissue is found inA. Climbing plantsB. Aquatic plantsC. Woody climbersD. Herbaceous climbers |
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Answer» Correct Answer - A Because such plants need much flexibility. |
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| 478. |
The parenchymatous cells arA. DeadB. Thick-walledC. Thin-walledD. Thick-walled and dead |
| Answer» Correct Answer - C | |
| 479. |
Give two characteristic features of parenchymatous cells. |
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Answer» (i) The parenchymatous cells are the living cells. (ii) They are thin-walled cells and their cells are made up of cellulose. |
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| 480. |
What is the role of secondary meristems in the body of some plants? |
| Answer» The cells of secondry meristems divide in radial directions to increases the girth of the plant. Hence, they participate in the secondary growth of the plants. | |
| 481. |
State the location and function of different types of meristem. |
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Answer» Meristems are specialised regions of plant growth. The meristems mark the regions where active cell division and rapid division of cells take place. Meristems are of three types depending on their location. Apical meristem It is present at the root apex and the shoot apex. The shoot apical meristem is present at the tip of the shoots and its active division results in the elongation of the stem and formation of new leaves. The root apical meristem helps in root elongation. Intercalary meristem It is present between the masses of mature tissues present at the bases of the leaves of grasses. It helps in the regeneration of grasses after they have been grazed by herbivores. Since the intercalary meristem and the apical meristem appear early in a plant’s life, they constitute the primary meristem. Lateral meristem It appears in the mature tissues of roots and shoots. It is called the secondary meristem as it appears later in a plant’s life. It helps in adding secondary tissues to the plant body and in increasing the girth of plants. Examples include fascicular cambium, interfascicular cambium, and cork cambium |
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| 482. |
Name the primary meristems seen in flowering plants. |
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Answer» (i) Apical meristems (ii) Intecalary meristems. |
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| 483. |
Which of the following are primary meristemsA. PleuromeB. ProtodermC. Intercalary meristemD. All the above |
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Answer» Correct Answer - D All are involved in primary growth of plant. |
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| 484. |
On the basis of origin , meristematic tissues can be classified under how many groupsA. 2B. 3C. 4D. 5 |
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Answer» Correct Answer - B On the basis of origin, meristematic tissue can be classified into promeristem, primary meristem and secondary meristem. |
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| 485. |
A type of dividing tissue found between mature stem regions is greases isA. intercalar meristemB. lateral meristemC. apical meristemD. all of the above |
| Answer» Correct Answer - A | |
| 486. |
Phelloderm consists ofA. living parenchymatous cellsB. dead sclerenchymatous cellsC. both (1) and (2)D. collenchyma cells |
| Answer» Correct Answer - A | |
| 487. |
Monocot root hasA. Cambium ring, vascular bundles two to four pith is large and well developedB. Radial vascular bundles polyarch xylem , no seconary growthC. Usually more than six xylem bunlles pith is small or inconspicous , conjuctive tissueD. Both B and C |
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Answer» Correct Answer - B Monocot root has radial vascualr bundles ,polyarch xylem (more than six), no secondary growth. |
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| 488. |
Periderm is made up ofA. PhellemB. PhellogenC. PhellodermD. All the above |
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Answer» Correct Answer - D Periderm : During secondary growth in dicot stems towards the outer side cork cambium produces cork outer side and secondary cortex to inner side. The three layers (Phellem, Phellogen and phelloderm) collectively called as periderm. |
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| 489. |
Fusiform initials formA. Vascular raysB. Tracheary elementsC. Ray parenchymaD. Phloem parenchyma |
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Answer» Correct Answer - B Treacheary elements such as tracheids, vessels, fibers , sieve tubes formed by fusiform initials. |
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| 490. |
Which one of the following characters is not found in transverse section of monocot stem?A. Sclerenchyma bundle sheathB. Lysigenous cavityC. Sclerenchymatous hypodermisD. Starch sheath |
| Answer» Correct Answer - D | |
| 491. |
Endodermis is a part ofA. Epidermal systemB. Intrastelar tissueC. Extrastelar tissueD. Vascualr tissue |
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Answer» Correct Answer - C Endodermis is part of extrastelar tissue |
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| 492. |
Read the following stements and find out the incorrect statement about monocot stem.A. A alarger number of scattereed vasular bundlesB. Each vascular bundle surrounded by a pparenchymotous bundle sheathC. Peripheral vascualr bundles are generally smaller than the centrallyh located onesD. Water containing cavities are present within the vascualr bundles |
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Answer» Correct Answer - B In monocot stem, each vascualr bundles surrounded by a sclerencymatous bundle sheath |
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| 493. |
vascular bundles in dicot stem areA. Open ,collateral ,endarchB. Closed ,collateral ,endarchC. open, collateral,exarchgD. Closed,collateral ,exarch |
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Answer» Correct Answer - A Vascular bundles in dicot stem are open, collateral and endarch. |
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| 494. |
Endodermis is a part ofA. MedullaB. StelleC. CortexD. Exodermis |
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Answer» Correct Answer - C Endodermis is part of cortex |
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| 495. |
Skin of potato is a familiar example ofA. phellogenB. phellemC. phellodermD. duramen |
| Answer» Correct Answer - B | |
| 496. |
Secondary growth is absent inA. HydorphytesB. MesophytesC. HalophytesD. Xerophytes |
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Answer» Correct Answer - A Hydrophytes mean plant grow in water. Hydrophytes do not show secondary growth because the vascular cambium is absent. |
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| 497. |
Secondary growth is absent inA. Dicot stemB. GymnospermsC. Monocot stemD. Dicot root |
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Answer» Correct Answer - C Vascular bundles are scattered and cambium is absent in monocot stem. |
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| 498. |
Secondary growth is absent inA. rootsB. stemC. leavesD. gymnosperms |
| Answer» Correct Answer - C | |
| 499. |
Cells of vascular cambium divideA. transversely onlyB. periclinally both on outer and inner sideC. perclinally on outer side onlyD. anticlinally only |
| Answer» Correct Answer - B | |
| 500. |
A 50 years old tree with distinct annulal rings in its trunk will show.A. 50 annual rings from base of trunk to apexB. 50 rings at bae of trunk and about 20 rings at apex.C. 50 rings at is base of trunk and uniformly decreasing towards apexD. 50 rings at bae of trunk and more or irregula number of rings at apex. |
| Answer» Correct Answer - C | |