InterviewSolution
Saved Bookmarks
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.
| 851. |
Fusiform initials and ray initials are the constituents ofA. xylemB. phloemC. phellemD. cambium |
| Answer» Correct Answer - D | |
| 852. |
The activity of cambium is under the control ofA. Enivronmental factorsB. Physiological factorsC. Both A and BD. None of the above |
|
Answer» Correct Answer - C The activity of cambium is under the control of environmental and physiological factors |
|
| 853. |
Parenchyma cells store tannis, oil, crystal, etc., known asA. idioblastB. aerenchymaC. prsenchymaD. chlorenchyma |
| Answer» Correct Answer - A | |
| 854. |
Assertion : Cambium is a lateral meristem and cause growth in width. Reason : Cambium is made up of fusiform and ray initials in stem.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 |
|
Answer» Correct Answer - B Cambium is a lateral meristem. Its activity causes increase in width. It is composed of fusiform and try initial. |
|
| 855. |
Alburnum is otherwise known asA. peridermB. sapwoodC. heartwoodD. bark |
| Answer» Correct Answer - B | |
| 856. |
Raphides are needle-like crystals of calcium oxalate which are specially found inA. PistiaB. RoseC. AsparagusD. Dahlia |
| Answer» Correct Answer - A | |
| 857. |
The specialised non-green, large sized parenchyma cells containing tannis, oils, crystals, etc., are calledA. idioblastB. trichoblastsC. trophocystsD. prosenchyma |
| Answer» Correct Answer - A | |
| 858. |
Cambium is a lateral meristem that takes part inA. Internodal growthB. Axial growthC. Growth of branchesD. Increasing grith of stem and root |
|
Answer» Correct Answer - D Cambium is lateral meristem that takes part in increasing girth of stem and root |
|
| 859. |
Which of the following statements are correct about heartwood? (i). It does not help in water conduction (ii). It is also called alburnum (iii). It is light in colour and is very soft (iv). It has tracheray elements which are filled with tannins, resins etc.A. b,c,dB. a,b,cC. b,dD. a,d |
|
Answer» Correct Answer - D Heartwood does not help in water conduction and it has tracheary elements which are filled wioth tannisns resins etc |
|
| 860. |
The elements of xylem tissue that store tannins areA. TracheidsB. VesselsC. Xylem parenchymaD. Xylem fibres |
|
Answer» Correct Answer - B The elements of xylem tissue that store tannins are xylem parenchyma. |
|
| 861. |
Specialised parenchyme cells which store tannins, oils and crystals of calcium oxalate are calledA. SclereidsB. IdioblastsC. Stone cellsD. Conjunctive tissue |
|
Answer» Correct Answer - B Idioblasts : Those parenchymatous cells in which waste products e.g. , gum, resin, sugar, starch is accumulated. |
|
| 862. |
Assertion : Quiescent centre is found in the centre of the root apex. Reason : It consists of actively dividing cells .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 |
|
Answer» Correct Answer - C Quiescent centre is found in the centre of the root apex. Cell divisions are very few in the quiescent centre a there is very little synthesis of new proteins, RNAs and DNA. Quiescent centre may function as reserve meristem. |
|
| 863. |
Assertion : Stomata are absent in submerged hydrophytes. Reason : Respiration occurs by means of air chambers in submerged plants.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 |
|
Answer» Correct Answer - B Stomata are absent in submerged hydrophytes. Air chambers help in gaseous exchange, `O_(2)` liberated during photosynthesis is stored in these chambers and used in respiration, `CO_(2)` released during respiration also remain in these chambers. `CO_(2)` is used in photosynthesis. |
|
| 864. |
In old dicot stems, a major part of the wood is filled up with tannins, resins, gums etc. This part of wood is calledA. Hard woodB. Heart woodC. Sap woodD. Soft wood |
| Answer» Correct Answer - B | |
| 865. |
Fill in the blanks: In older trees , the greater part of …a…. Is dark brown due to deposition of tannins, resins, oil, guns, aromatic substanceces and essential oil in the central layers of the stem. These substances make it hard durable and resistant to the attacks of microorganisms and insects .This region is called .. b ...A. a- secondary xylem, b- sapwoodB. a- secondary xylem, b- heartwoodC. a- secondary phloem,, b- softwoodD. a- secondary xylem, b- hardwood |
| Answer» In older trees the greater part of secondary xylem is dark brown due to deposition of tannins resins oil gund aromatic substances and essential oil in the central layers of the stem. These substances make it hard durable and rsistant to the attacks opf microoorganisms and insects. This region is called heartwood. | |
| 866. |
Heart wood or duramen isA. Outer region of secondary xylemB. Inner region of secondary xylemC. Outer region of secondary phloemD. Inner region of secondary phloem |
| Answer» Correct Answer - B | |
| 867. |
During secondarry growth , at same places ,the cambium forms narrow band of parenchyma, which passes through the secondary xylem and the secondary phloem in the radial directions. These are calledA. Medullary raysB. PhellodermC. Secondary medullary raysD. Fascicular cambium |
|
Answer» Correct Answer - C During secondary growth at some places the camsbium forms narrow band of parenchyma, which passses though the secondary xylem and the secondary phloem in the radial irection. These are called secodary medullary rarys |
|
| 868. |
Vascular bundles in monocotyledons are considered closed because :A. cambium is absentB. there is surronded all perforationsC. xylem is surrounded all around by phelomD. a bundle sheath surround each nudle |
| Answer» Correct Answer - A | |
| 869. |
In a ring girdled plant :A. Neither root nor shoot will dieB. The shoot dies firstC. The root dies firstD. The shoot and root die together |
| Answer» Correct Answer - B | |
| 870. |
The tracheids and vessels of this wood get plugged by the ingrowth of the adjacent parenchyma cellsA. alburnumB. duramenC. autumnwoodD. springwood |
| Answer» Correct Answer - B | |
| 871. |
Transmission tissue is characteristic feature ofA. Wet stigmaB. Hollow styleC. Solid styleD. Dry stigma |
| Answer» Correct Answer - C | |
| 872. |
A major characteristic of the monocot root is the presence ofA. Vasculature without cambiumB. Cambium sandwiched between phloem and xylem along the radiusC. open vascular bundlesD. Scattered vascular bundles |
|
Answer» Correct Answer - A A major characteristeic of the monocot rooth is the presence of vasculature without cambium. |
|
| 873. |
Assertion: Heart wood is not involved in conduction function. Reason: Tyloses and depositions of tannins, resins, and gums is common in duramen cells.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 - A | |
| 874. |
A major characteristic of the monocot root is the presence ofA. scattered cascular bundlesB. vasculature witout cambiumC. cambium sandwiched between phloem and xylem along the radiusD. open vascular bundles |
| Answer» Correct Answer - B | |
| 875. |
A major characteristic of the monocot root is the presence ofA. Scattered vascular bundlesB. Vasculature without cambiumC. Cambium sandwiched between phloem and xylem along the radiusD. Open vascular bundles |
|
Answer» Correct Answer - B In monocot root, Cambium is absent in the vasculature. |
|
| 876. |
The baloon like outgrowth of parenchyma in the lumen of a vessel is known asA. HistogenB. TylosesC. PhellogenD. Tunica |
|
Answer» Correct Answer - B Tyloses are balloon like structures develop from xylem parenchyma. |
|
| 877. |
A major characteristic of the monocot root is the presence ofA. Cambium sandwiched between phloem and xylem along the radiusB. Open vascular bundlesC. Scattered vascular bundlesD. Vasculature without cambium |
| Answer» Correct Answer - D | |
| 878. |
Balloon-like swellings formed by xylem parenchyma inside the xylem vessels through pits areA. Tracheal plugB. TylosesC. CalloseD. Both 1 and 2 |
| Answer» Correct Answer - D | |
| 879. |
(A) heart wood is durable, dark and central in position. (B) Tyloses are balloon like structures of xylem parenchyma in vessel lumen. (C ) Late wood is formed during spring season.A. All are correctB. Only A is correctC. Only B is incorrectD. Only C is incorrect |
| Answer» Correct Answer - D | |
| 880. |
A major characteristic of the monocot root is the presence ofA. Cambium sandwitched between pholem and xylem along the radiusB. Open vascular bundlesC. Scattered vascular bundlesD. Vasculature without cambium |
| Answer» Correct Answer - D | |
| 881. |
Secondary growth in extrasteler region is due to activity ofA. Interfascicular cambiumB. Intrafascicular cambiumC. Cork cambiumD. Intercalary meristem |
| Answer» Correct Answer - C | |
| 882. |
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. Secondary xylemB. Seconday pholemC. ProtoxylemD. Cortical cells |
| Answer» Correct Answer - C | |
| 883. |
Intercalary meristem is related to all, exceptA. Present between permanent cellsB. Primary meristemC. Increasing the grith of axisD. Regenerates part of grasses removed by grazing herbivores. |
| Answer» Correct Answer - C | |
| 884. |
Palm is a monocotyledonous plant, yet it increases in girth. Why and how ? |
| Answer» Palms, despite being monocotylednous plant show secondary growth, i.e., increase in girth. This is due to the division and enlargement of parenchymatous cells in the ground tissue. Thus, repeated divisions cause increase in girth of stem and this type of growth is referred to as diffused secondary growth. | |
| 885. |
Increase in girth of a plant organ is a result of activity ofA. intrafascicular cambiumB. intrafascicular cambiumC. cork cambiumD. All of the above |
| Answer» Correct Answer - D | |
| 886. |
Increase in girth of the plant as a result of the activities of primary and secondary lateral meristems is called.A. primary growthB. lateral growthC. secondary growthD. intercalary growth. |
|
Answer» Correct Answer - C Increase in girth or thickness of the axis of plant takes lace due to the activity of secondary lateral meristems like vascular cambium andcork cambium. It is called secondary growth. |
|
| 887. |
Identify the following point A, B and C in the given diagram A. A- Root hair primordium, B- Root apical meristem, C- Terminal budB. A- Root hair primordium, B- Root apical meristem, C- Axillary budC. A- Leaf primordium, B- Shoot apical meristem, C-Apical budD. A- Leaf primordium, B- Shoot apical meristem, C- Axillary bud |
| Answer» Correct Answer - D | |
| 888. |
The following diagram opposite illustrates a longitudinal section through a shoot apex. Which of the figures gives below shows the correct appearance of this shoot apex at the formation of the next leaf primordium A. B. C. D. |
| Answer» Correct Answer - A | |
| 889. |
Dicot root is similar in all the given characters to monocot root, except. |
| Answer» Correct Answer - A | |
| 890. |
Casparian strips are found on radial and inner walls ofA. Stem endodermisB. Root endodermisC. PericycleD. Outer cortex |
| Answer» Correct Answer - B | |
| 891. |
Chlorenchyma is known to develop in theA. Cytoplasm of ChlorellaB. Mycelium of a green mould such as AspergillusC. Capsule of a mossD. Pollen tube of Pinus |
| Answer» Correct Answer - C | |
| 892. |
In collateral vascular bundle, I. single patch of phloem and xylem present. II. Two patches of phloem and one of xylem present. III. Phloem present outward and xylem present inward. IV. Phloem present outward as well as inward to the xylem.A. I and IIIB. II and IVC. Only IVD. I, II, III and IV |
| Answer» Correct Answer - A | |
| 893. |
A narrow layer of thin-walled cells found between phloem/bark and wood of a dicot isA. endodermisB. vascular cambiumC. pericycleD. cork cambium |
| Answer» Correct Answer - B | |
| 894. |
Intercalary meristem is seen inA. PaddyB. FicusC. CabbageD. Cucurbita |
|
Answer» Correct Answer - A Because paddy is monocot plant. |
|
| 895. |
The given figure shows which of the following cells?A. companion cellB. sieve tube elementC. Xylem vesselD. Xylem tracheid |
|
Answer» Correct Answer - C The given figure represents xylem vessel. It has a long cylinderical tube-like structure made up to many cells calledvessel members,each with lignifies walls and alarge central cavity. Vesselmembers are interconnected through perforations intheir common walls. |
|
| 896. |
Intercalary meristems are present in theA. Nodal regionB. Internodal regionC. BryophytesD. Nodal region close to base of plant |
|
Answer» Correct Answer - A Intercalary meristems are present mostly at the base of node (nodal region) (e.g., Mentha viridis, Mint), base of internode (e.g., stem of wheat , grasses), and the base of the leaf (e.g., Pinus). |
|
| 897. |
Bone shaped sclerenchymatous cells found in hypodermal layers of some seeds and fruits are calledA. osteosclereidsB. macrosclereidsC. brachysclereidsD. trichosclereids |
|
Answer» Correct Answer - A Osteosclereids are a type of sclereids which are bone-shaped or columnar with swollen ends, present in subepidermal covering of some legume seeds. |
|
| 898. |
Idioblasts areA. sclerenchymatous fibres found in the leaf of YuccaB. specialised parenchymatous cells which contains ergastic substancesC. Collenchymatous cells possessing angular thickeningsD. crystals of calcium oxalate found in hard fruits |
|
Answer» Correct Answer - B Idoblastsare specialised non-green large-sized parenchyma cells which possess inclusions or ingredients like tannins, oils, crystals, etc. |
|
| 899. |
The tissue which perpetuates itself by active cell division isA. Premanent tissueB. Ground issueC. Meristematic tissueD. Vascular tissue |
|
Answer» Correct Answer - C Meristematic tissue or meristem is a group of cells which has power of continuous division. |
|
| 900. |
Growth in plants is largely restricted to speeicalised regions of active cell division calledA. MeristermsB. CambiumC. PrimordiumD. Permanent tissue |
|
Answer» Correct Answer - A Growth in plants largely restricted to specialoised regions of active cell divisions clle Meristems. |
|