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.
| 651. |
Which one constitutes the dominant vegetation in colder regions?A. MonocotsB. DicotsC. LegumesD. Gymnosperms |
| Answer» Correct Answer - D | |
| 652. |
What is the basic of classification of algae ? |
| Answer» Earlier the algae were classified on the basis of single visible character, viz., colour of algae thalli (e.g., green algae, brown algae, red algae, etc.). Now they are classified on the basis of more than one characters, i.e., (i) colour of thalli , (ii) their storage products , (iii) cell wall chemistry , (iv) flagellation and cellular organizations. | |
| 653. |
The sequencing in DNA and chemical nature of proteins have been used as the basis of classification byA. CytotaxonomistB. KaryotaxonomistC. ChemotaxonomistD. `alpha`-taxonomist |
| Answer» Correct Answer - C | |
| 654. |
The classification of plants and animals on the basis of chromosome number is calledA. CytotaxonomyB. Biochemical systematicsC. TaxonomyD. Numerical taxonomy |
| Answer» Correct Answer - A | |
| 655. |
Which is not a character of bryophytes ?A. Main plant body is haploidB. They posses multicellular sex organsC. They need water for sexual reproductionD. They possess well differentiated vascular tissues |
|
Answer» Correct Answer - D They do not possess well differentiated vascular tissues. |
|
| 656. |
What is the shape of chloroplast in Spirogyra ?A. spiral,bank likeB. cup likeC. stellate likeD. U-like |
| Answer» Correct Answer - A | |
| 657. |
Gametes of Spirogyra areA. biflagellatedB. uniflagellatedC. non-flagellatedD. diploid |
| Answer» Correct Answer - C | |
| 658. |
Cone bearing pteridophyta areA. Lycopsida and PsilopsidaB. Filicinae and LycopsidaC. Filicinae and SphenopsidaD. Lycopsida and Sphenopsida |
| Answer» Correct Answer - D | |
| 659. |
Seed are found inA. AngiospermsB. BryophytaC. PteridophytaD. Algae |
| Answer» Correct Answer - a | |
| 660. |
Which of the following contain xylem vesselA. BryophyteB. PteridophytaC. Both a and bD. Angiosperm |
| Answer» Correct Answer - d | |
| 661. |
The main plant body of Pteridophytes isA. SporophyteB. GametophyteC. HaploidD. None of the above |
| Answer» Correct Answer - A | |
| 662. |
Which of the following genera shows vessels in xylem ?A. GnetumB. CycasC. PinusD. Marsilea |
|
Answer» Correct Answer - A Gnetum is a gymnosperm which exceptionally shows vessels in xylem. |
|
| 663. |
Which of the following contain xylem vesselA. BryophytaB. PteridophytaC. GymnospermsD. Angiosperms |
| Answer» Correct Answer - D | |
| 664. |
A small rootless aquatic herb in which a portion of leaf foms a tiny sach or bladder which traps water insects isA. NepenthesB. DroseraC. UtriculariaD. Dionaea |
| Answer» Correct Answer - C | |
| 665. |
Which one of the following is a rootless fossil plant ?A. LepidodendronB. RhyniaC. WilliamsoniaD. Lyginopteris |
|
Answer» Correct Answer - B Rhynia is a rootless fossil plant. |
|
| 666. |
Gymnospers do not haveA. TreesB. ShrubsC. LianasD. Herbs |
|
Answer» Correct Answer - d Gymnoperms are perennial trees and shurbs and woody large trees. |
|
| 667. |
Assertion: Sporophytes of pteridophyta are dominant individual. Reason: They do not show the formation of true root.A. If both the assertion and the reason are true and the reason is a correct explanation of the assertionB. If both 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 In the pteridophytes, the sporophyte gains physiological independence and develops into the dominant, typically phosynthetic phase of the life cycle. It is organized into stem, leaves and roots. For the first time in the sporophyte of the pteridophytes true roots develops. Psilophyta (a pteridophyte divison). lack true roots. |
|
| 668. |
Agra is obtained fromA. Polysiphonia and PorphyraB. Chlamydomonas and SpirogyraC. Gelidium and GracilariaD. Chara and Chlamydomonas |
| Answer» Correct Answer - C | |
| 669. |
In red algar, food is stored in the form ofA. Floriden starchB. MannitolC. Glycogen and leucosinD. Laminarin |
| Answer» Correct Answer - A | |
| 670. |
Eusporangate ferm is produced formA. A group of sporanglal, initial cellB. Single initial cellC. Epidernal cellsD. Hypodermal cells |
|
Answer» Correct Answer - a Eusporangiate type of sporangium develops from a group of superficial initials. They divide perclinally in to outer and inner. |
|
| 671. |
Who is called father of phycology ?A. M.O.P. IyengerB. F.E FritschC. De BaryD. Butler |
|
Answer» Correct Answer - B F.E. Fritsch is called father of phycology. |
|
| 672. |
An algae which is used as food supplements even by space travellers isA. spirpgyraB. DictyotaC. SpirullinaD. Gracilaria |
| Answer» Correct Answer - C | |
| 673. |
Assertion: Chlorella and spirulina are used as a food supplement by space travellers Reason: Chlorella and spirulina are unicellular algae.A. If both assertion and reason are true and reason is the correct explanation of assertion.B. if both assertion and reason are true but reason is not the correct explanation of assertionC. if assertion is true but reason is false.D. if both assertion and reason are false. |
|
Answer» Correct Answer - B Unicelluar algae Chlorella and Spirulla are rich in proteins and hence used as food supplement by space travellers. |
|
| 674. |
In Cycas Pollination takes place inA. 3-celled stageB. 4-celled stageC. 2-celled stageD. 1-celled stage |
|
Answer» Correct Answer - a The pollen grains at this 3 celled stage fall directly on the pollination drop secreted by ovule as there is no stigma to receive pollen grains. |
|
| 675. |
Algae which is used as food by space travellers isA. ChlorellaB. NostocC. SpirulinaD. Both A and C |
|
Answer» Correct Answer - D Chlorella and Spirulina are used as food by space travellers are they are rich in protein. |
|
| 676. |
In Cycas, Pollination is byA. WindB. InsectsC. WaterD. Both a and b |
|
Answer» Correct Answer - a The pollination is anemophilous the pollen grains of cycas are light in weight and easily blown away be wind. |
|
| 677. |
Fucoxanthin pigment is found inA. Green algaeB. Brown algaeC. Red algaeD. All of the above |
|
Answer» Correct Answer - B Fucoxanthin pigment is found in brown algae. |
|
| 678. |
Kelps areA. Fresh water algaeB. Marine algaeC. TerrestrialD. Amphibious |
| Answer» Correct Answer - B | |
| 679. |
Cycas containsA. Muclilage ductsB. Laticiferous vesseslC. Resin ductsD. Oil ducts |
|
Answer» Correct Answer - a Stem pith of cycas having a number of mucilage canals. |
|
| 680. |
Kelps are massiveA. Brown algaeB. Amphibious plantsC. Flowering plantsD. Plants with naked seeds |
| Answer» Correct Answer - A | |
| 681. |
Pyrenoids are related toA. Protein storageB. Starch formationC. MetabolismD. Reproduction |
|
Answer» Correct Answer - B Pyrenoids are related to starch formation |
|
| 682. |
Massive plant bodies are formed byA. UlothrixB. SpirogyraC. Both A and BD. Kelp |
|
Answer» Correct Answer - D Massive plant bodies are formed by kelp |
|
| 683. |
Which one of the following statements concerning the algae is worng.A. Most algae are photosyntheticB. Algae can be classified according to their pigmentsC. All algae are filamentousD. Spirogyra does not produce zoospores |
| Answer» Correct Answer - c | |
| 684. |
Choose the worng pairA. Heptaicopsida - MarchanitaB. Lycopsida - SelaginellaC. Bryopsida - AnthocerosD. Pteropsida - Dryopteris |
| Answer» Correct Answer - c | |
| 685. |
Cycas revoluta isA. Date palmB. Sea plamC. Royal palmD. Sago palm |
|
Answer» Correct Answer - d Sago palm rich in starch. |
|
| 686. |
Wood of Cycas isA. Monoxylic and manoxylicB. Manocxylic and polyxylicC. DiploxylicD. Monoxylic |
|
Answer» Correct Answer - b Monoxylic and Polydxylic: The wood is loose, soft, nonporous commerically useless, parenchymatous tissue more, vascular tissue less pith and cortex broad, medullary rays wide e.g., cycas wood. |
|
| 687. |
In majority of angiospermsA. A small central cell is present in the embryo sacB. Egg has a filiform apparatusC. There are numerous antipodal cellsD. Redcution division occurs in the megaspore mother cells. |
|
Answer» Correct Answer - d Megaspore Mother Cell (MMC) undergoes meiosis to form megaspore. |
|
| 688. |
Floridean starch is very similar toA. AmylopectinB. CelluloseC. GlycogenD. Both A and C |
|
Answer» Correct Answer - D Floridean starch is very similar to amylopectin and glycogen in structure |
|
| 689. |
Floridean starch is found inA. ChlorophyceaeB. RhodophyceaeC. MyxophyceaeD. Cyanophages |
|
Answer» Correct Answer - b In Rhodophyceae reserve food products are polysaccharides i.e., Floridean starch (which stains red with iodine solution) and also soluble sugar called floridoside. |
|
| 690. |
The gametangia and sporangia of Ulothrix areA. jacketed and multicellularB. jacketed and unicellularC. nonjacketed and multicellularD. non-jacketed and unicellular |
| Answer» Correct Answer - D | |
| 691. |
Spermatozoid of Cycas isA. BiflagellateB. NoflagellateC. UniflagellateD. Multicillated |
|
Answer» Correct Answer - d The sperm of Cycas is remarkbly large in the entire plant kingdom. It is top shaped with 4-5 spiral coils of cilia at anterior half. |
|
| 692. |
Which of the following is non-flagellate ?A. ChlorellaB. UlothrixC. SpitogyraD. All of the above |
|
Answer» Correct Answer - D Ulothrix, Spirogyra and Chlorella are non-flagellate |
|
| 693. |
Which of the following plants do not produce seeds?A. Ficus and FunariaB. Fern and FunariaC. Chlamydomonas and FicusD. Pumica and Pinus |
| Answer» Correct Answer - B | |
| 694. |
Which one of the following is a living fossilA. SaccharomycesB. SpirogyraC. CycasD. Moss |
|
Answer» Correct Answer - c Living fossil is that organism whose relatives have become extinct (Fossilised) and has a restricted distribution, therefore, threatened to become extinct. |
|
| 695. |
Algae which form motile colony isA. VolvoxB. NostocC. SpirogvraD. Chlamydomonas |
| Answer» Correct Answer - A | |
| 696. |
Auxospore formation is seen in [KCET 2005]A. NostocB. YeastC. DiatomsD. Agaricus |
| Answer» Correct Answer - C | |
| 697. |
Algae growing on shells and bodies of animals are calledA. EpiphyticB. EpilithicC. EpizoicD. Endophytic |
|
Answer» Correct Answer - C Algae growing on shells and bodies of animals are celled epizoic |
|
| 698. |
Pinus differs from mango in havingA. tree habitB. green leavesC. ovules not enclosed in ovaryD. wood |
|
Answer» Correct Answer - C (c) Gymnosperms, (e.g. Pinus) are commonly called as naked seeded plants since their ovules (which later become seed) are not covered and lie naked on the surfaces of specialised leaves (megasporophylls or ovuliferous scales) arranged into cones. Thus, gymnosperms are also known as seeded plants without flowers or phanerogams without ovary. In contrast, angiosperms are seed bearing, flowering vascular plants in which seeds are enclosed in fruits, and are called as phanerogams with ovary or seeded flowering plants. |
|
| 699. |
Smallest plant which contain green pigment pigment such as higher green plant isA. SchizomycetesB. RhodophyceaeC. ChlorophyceaeD. Phaeophyceae |
|
Answer» Correct Answer - c Chlorophyll a and b pigments are found in chlorophyceae. |
|
| 700. |
Megasporangium of Selaginella is equivalent to which structure of PinusA. OvuleB. NucellusC. Female gametophyteD. Seed |
|
Answer» Correct Answer - b Nucellus is the megasporangium of Pinus. |
|