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.
| 501. |
One cannot age a tree by its rings if that tree is located in which of the following forestsA. Tropical deciduousB. Tropical evergreenC. Temperte deciduousD. Temperate evergreen |
| Answer» Correct Answer - B | |
| 502. |
Tree rings from when .......... Alternates with .........A. Alburnum, duramenB. Protoxylem, metaxylemC. Early wood, late woodD. Heartwood, sapwood |
| Answer» Correct Answer - C | |
| 503. |
Which one of the following haveamphivasal vascular bundles?A. Cycas and DryopterisB. Dracaena and YuccaC. Helianthus and CucrbitaD. Maize and Wheat |
| Answer» Correct Answer - B | |
| 504. |
Removal of cork from the trees is to be done with care. Otherwise the tree can die. This is becauseA. The exylem layer transporting water and minerals can be demagedB. The primary rays giving strenght can be demageC. The inner pith with storage cells can demagedD. The phloem used in transporting the sugars can be damaged |
| Answer» Correct Answer - D | |
| 505. |
stomata in water lily and podostenon occur respectively ofA. Lower leaf surface and absent on upper leaf surfaceB. Upper leaf surface nd absent on lower leaf surfaceC. Both leaf surfacesD. Absent in both |
| Answer» Correct Answer - B | |
| 506. |
A concentric amphivasal (leptocentric) vascular bundle is one in whichA. Centrally located phloem is surrounded by the xylem of xylem surround phloemB. Centrally located xylem is surrounded by phloemC. Xylem is flanked by phloem on the interior and exterior side onlyD. phloem is flanked by the xylem on interior side only |
| Answer» Correct Answer - A | |
| 507. |
Root hairs are foundA. In the zone of maturatinB. On adventitious rootsC. On the root capD. ON the apical meristem |
| Answer» Correct Answer - A | |
| 508. |
Indentify the wrong statement in context of heartwoodA. Organic compounds are deposited in itB. It is highly durableC. It conducts water & minerals efficientlyD. It comparises dead elemens with highly lignified walls |
| Answer» Correct Answer - C | |
| 509. |
Root hairs develop fromA. maturationB. elongationC. root capD. mesistematic activity |
| Answer» Correct Answer - A | |
| 510. |
Indentify the wrong statement in context of heartwoodA. Organic compounds are deposited in itB. It is highly durableC. It conduct water and minerals effcientlyD. It comprises dead elements with highly lignified walls |
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Answer» Correct Answer - c Heartwood also called duramen is the central dead wood of trees . It comprises of dead , lignified cells containing organic compounds , e.g. tannins or other substances . Theses substances make it darker in colour and aromatic . Heartwood is strong durable and resistant to decay .It does not conduct water and minerals because of the presence of dead elements. Thinking Process the conduction of water and minerals is carried out by sapwood , because it contains living cells. |
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| 511. |
Root hairs develop fromA. maturationB. elongationC. root capD. meristematic activity |
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Answer» Correct Answer - a The roots is covered at the apex by a thimple - like structure called the roots cap. protects the tender apex of the root as it makes its way through the soil . A few millimetres activity . The cells of this region are very small , thin - walled and with dense protoplasm . they divide repeatedly. the cell proximal to this region undergo rapid elongation and enlargement and are responsible for the growth of the root in length . this region is called the region of elongation . the cells of the elongation zone gradually differentiate and mature . Hence , this zone , proximal . From this region , some of the epidermal cells form very fine and delicate , thread - like structure called roots hairs. These roots hairs absorb water and minerals from the soil. |
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| 512. |
meristem present in a vascular bundle isA. Fascicular/Intrafascicular cambiumB. Intrafacicular cambiumC. PhellogenD. Procambium |
| Answer» Correct Answer - A | |
| 513. |
Assertion: Velamen is hygroscopic in nature and absorbs environmental ositure. Reason: Velamen is common in orchids which are epiphytes.A. If both Assertin and Reason are true and the Reason is the correct explanatin of the Assertion.B. If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.C. If Assertion is true, Reason is false.D. If both Assertion and Reason are true. |
| Answer» Correct Answer - B | |
| 514. |
Find the incorrect statement.A. Root hairs are unicellular elongations.B. Trichomes are only unicellular elongations.C. Trichomes are unicellular or mutlicellular elongations.D. Root hairs absorb water and minerals. |
| Answer» Correct Answer - B | |
| 515. |
The arrangement of xylem in stem isA. EndarchB. MesarchC. ExarchD. Both 1 and 2 |
| Answer» Correct Answer - A | |
| 516. |
Water cavity & V or Y- shaped xylum occurs in -A. Dicot stemB. Monocot rootC. Monocot stemD. Dicot root |
| Answer» Correct Answer - C | |
| 517. |
Centrifugal xylem arrangement is found inA. rootsB. stemsC. Both (a) and (b)D. None of these |
| Answer» Correct Answer - B | |
| 518. |
Increment borer is an instrument used to countA. the number of xylem vessels of early woodB. the number of annual ringsC. the number of cambium ringsD. the number of tyloses in each vessel |
| Answer» Correct Answer - B | |
| 519. |
In which of the following order, an exarch xylem develops-A. CentripetalB. CentrifugalC. Both centripetial and centrifugalD. Irregular |
| Answer» Correct Answer - A | |
| 520. |
The only plant cells without nuclei among the following are Or The tissue which is living but does not posses nucleous in mature stage isA. sieve tubeB. xylem vessels elementsC. root hairsD. companion cells |
| Answer» Correct Answer - A | |
| 521. |
Which of the following is living?A. VesselsB. TracheidsC. Companion cellsD. Sclerenchyma |
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Answer» Correct Answer - C Companion clels are opf living cells while rest are dead |
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| 522. |
you are given a fairly old piece of dicot stem and a dicot root. Which of the following anatomical structures will you use to distinguish between the two.A. Cortical cellsB. secondary xylemC. Secondary phloemD. Protoxylem |
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Answer» Correct Answer - D You are given a fairly old piece of dicot stem and a dicot root. Protoxylem is anatomical structure that is used to distinguish (dicot ) stem has endarch and dicot root has exarch conditioon). |
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| 523. |
Bicollaterakl vascualr bundles occur in which of the following families?A. CruciferaeB. cactaceaeC. SolanaceaeD. Gramineae |
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Answer» Correct Answer - C Bicollateral vascular bundles occur in flamily solanaceae. |
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| 524. |
The only plant cells without nuclei among the following are Or The tissue which is living but does not posses nucleous in mature stage isA. Cambium cellsB. Sieve tube elementsC. Root hairsD. Companion cells |
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Answer» Correct Answer - B The plant cells without nucleus are Sieve tube elements. |
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| 525. |
A closed collateral bundle is one whereA. Xylem and phloem occur on different radiiB. Collateral bundle occurs without cambiumC. Xylem and phloem are separated by cambiumD. Collateral bundle occurs with cambium |
| Answer» Correct Answer - B | |
| 526. |
Which of the following tissues has dead cells ?A. CollenchymaB. SclerenchymaC. ParenchymaD. Phloem |
| Answer» Correct Answer - B | |
| 527. |
Siveral tubes are constituent ofA. WoodB. Vascular cambiumC. PhellemD. Bast |
| Answer» Correct Answer - D | |
| 528. |
The epidermal fibers of economic importance belong toA. CottonB. Flax C. HempD. Coir |
| Answer» Correct Answer - A | |
| 529. |
Albuminous cells occur inA. XylemB. PhloemC. CortexD. Conjunctive parenchyma |
| Answer» Correct Answer - B | |
| 530. |
In barely vascular bundles areA. Closed and scatteredB. Open and in ringC. Closed and radialD. Open and scattered |
| Answer» Correct Answer - A | |
| 531. |
vessels occur inA. All angiosperms, all gymnosperms and some pteridophytesB. All angiousperms and some gymnospersmsC. Most angiosperms, a few gymnosperms and pteridophytesD. All pteridophytes |
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Answer» Correct Answer - C Vessel occur in most angiousperms , a few gymnosperms and pteridophytes. |
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| 532. |
vessels occur inA. All angiosperms, all gymnosperms, and some pteridophytesB. All angiosperms and some gymnospersmC. Most angiosperms, a few gymnosperms and pteridophytesD. All pteridophytes |
| Answer» Correct Answer - C | |
| 533. |
Cuticles is secorted byA. EpidermisB. EndodermisC. Both 1 and 2D. Hypodermis |
| Answer» Correct Answer - D | |
| 534. |
What happens during vascularisation in plants ?A. Differentiation of procambium, formation of primary pholem followed by formation of primary xylemB. Differentiation of procambium followedby the formation of primary pholem and xylem simultaneouslyC. Formation of procambium, secondary pholem and xylem simulataneouslyD. Differentiation of procambium followed by the formation of secondary xylem |
| Answer» Correct Answer - B | |
| 535. |
Which of the following statements is true?A. Vessels are multicellular is true?B. Tracheids are multicellular with narrow lumenC. Vessels are unicellular with narrow lumenD. Tracheids are unicellular with wide lumen |
| Answer» Correct Answer - D | |
| 536. |
If four radial vascular bundles are present, then the structure will beA. Dicot rootB. Monocot rootC. Dicot rootD. Monocot stem |
| Answer» Correct Answer - A | |
| 537. |
If four radial vascular bundles are present, then the structure will beA. Monocot stemB. Monocot rootC. Dicot stemD. Dicot root |
| Answer» Correct Answer - D | |
| 538. |
Vascular bundle in monocotyledons are considered closed, whenA. Cambium presentB. Cambium absentC. Pericycle absentD. None of these |
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Answer» Correct Answer - B When cambium is absent between xylem and phloem, it is said to be closed type. |
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| 539. |
Velamen tissue in orchids is found inA. ShootB. RootC. LeavesD. Flowers |
| Answer» Correct Answer - B | |
| 540. |
Vascular bundles in the stem of Cucurbita or Lagenaria areA. CollateralB. BicollateralC. RadialD. Inverted |
| Answer» Correct Answer - B | |
| 541. |
Bulliform or motor cells are present inA. Upper epidermis of dicot leavesB. Upper epidermis of monocot leavesC. Lower epidermis of monocot leavesD. Lower epidermis of dicot leaves |
| Answer» Correct Answer - B | |
| 542. |
each annual ring or growth ring consists of two strips ofA. Spring wood and early woodB. Onluy spring woodC. Only autumn woodD. Spring wood and autumn wood |
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Answer» Correct Answer - A::D One growth ring consists of both spring wood and autumn wood. |
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| 543. |
The sugarcane plant hasA. reticulate venationB. capsular fruitsC. pentamerous flowersD. dumb-bell-shaped guard cells |
| Answer» Correct Answer - D | |
| 544. |
The sugarcane plant hasA. Dumb bell shaped guard cells and found in grassesB. pentamerous flowersC. reticulate venationD. capsular fruits |
| Answer» Correct Answer - A | |
| 545. |
The length of different internodes in a culm of sugarcane is variable becauseA. Intercalary meristemB. Shoot apical meristemC. Position of axillary budsD. Size of leaf lamina at the node below each internode |
| Answer» Correct Answer - A | |
| 546. |
What is true about heartwood?A. It does not help in water transportB. It is resistant to bacterial infectionsC. It is made up of degenerated cellsD. All of the above |
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Answer» Correct Answer - A::D Heart wood does not help in water transport, it is resistant to bacterial and it is made up of degenerated cells. |
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| 547. |
A common structural feature of vessel elements and sieve tube elements isA. pores on lateral wallsB. presence of p - proteinC. enucleate conditionD. thick secondary walls |
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Answer» Correct Answer - a The vessels are nucleated and the seive tube elements are enucleated. The wall of both the vessel and sieve tube elements are perforated by large openings. Due to these adaptation the cell to cell contact is possible. |
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| 548. |
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 seed 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 patches are thin walled and are called passage cells or transfusion cells. Passage cells help in transfer of water and dissolved salts from cortex directly into the xylem and ultimately to the pericycle. |
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| 549. |
Which one is encleacted ?A. Companion cellB. Sieve cellC. TracheidD. Vessel |
| Answer» Correct Answer - B | |
| 550. |
In barley stem vascular bundles areA. open and scatteredB. closed and scatteredC. open and in a ringD. closed and radial |
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Answer» Correct Answer - b The vascular bundles in Hordeum vulgare (barley) plant are scattered in ground tissues , many in number and vary in size - smaller towards perphery and bigger toward centre of the ground tissue , oval or rounded in outline , conjoint, collateral and closed. |
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