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401.

Which one is also called HookwormA. AncylostomaB. EnterobiusC. RhabditisD. Ascaris

Answer» Correct Answer - A
Ancylostoma
402.

The crown sponge measuresA. 5-6 cm in height and 1-3 cm in diameterB. 1-3 cm in height and 5-6 mm in diameterC. 1-3 mm in height and 5-6 cm in diamterD. 2-4 mm in heigth and 8-10 mm in diamter

Answer» Correct Answer - B
403.

Point out the statement which is not a salient feature of the class-CalcareaA. The skeleton consists of calcarous spiculesB. Body is radially summetrical cylindrical or vase-likeC. They are bright coloured and freshwater or marine organismsD. The choanocytes are large

Answer» Correct Answer - C
404.

Sycon is also called asA. urn spongeB. bath spongeC. crown spongeD. Both (a) and (b)

Answer» Correct Answer - D
405.

The zygote of Leucosolenia develops into a hollow blastula calledA. stereogastrulaB. coeloblastulaC. amphiblastulaD. holoblastula

Answer» Correct Answer - A
406.

Which of the following characters is shown by the members of classes-Chondrichthyes?A. Notochors is persistent throughout lifeB. Gill slits are separate and without operculm (gill cover)C. The skin is tough containing minute placoid scalesD. All of the above

Answer» Correct Answer - D
407.

The body of members of class-Chondrichthyes isA. antero-posteriorly flattenedB. laterally compressedC. with trunk and tailD. Both b and c

Answer» Correct Answer - D
408.

The chief nitrognous waste in class-Chondrichthyes members isA. ammoniaB. uric acidC. ureaD. None of these

Answer» Correct Answer - C
409.

The kidney in true fishes isA. metanephrosB. mesonephrosC. holnephrosD. pronephros

Answer» Correct Answer - B
410.

Match the following Columns. A. `{:(A,B,C),(iii","3,iv","2,ii","4):}`B. `{:(A,B,C),(ii","4,iii","3,iv","2):}`C. `{:(A,B,C),(i","4,iv","1,iii","3):}`D. `{:(A,B,C),(ii","2,iii","3,i","1):}`

Answer» Correct Answer - D
411.

Torsion and detorsion are characteristic features inA. MolluscaB. ArthropodaC. AnnelidaD. Protozoa

Answer» Correct Answer - A
412.

Which is the National Aquatic Animal of IndiaA. Raver dolphinB. Blue whaleC. Sea-horseD. Gangetic shark

Answer» Correct Answer - A
413.

Which of the following animal has enucleated erythroctes?A. EarthwormB. SepiaC. FrogD. Rat

Answer» Correct Answer - D
414.

In which class of Echinodermata stalk is found for attachment with substratum ?A. CrinoideaB. EchinoideaC. AsteroideaD. Holothuroidea

Answer» Correct Answer - A
415.

In housefly are presentA. 1 pseudotrache and 1 spiracleB. 2 pseudotrachae and 1 spiracleC. 2 pseudotrachae and 2 spriaclesD. None of the above

Answer» Correct Answer - D
416.

The order of metamorphosis in housefly isA. egg , pupa , larva and adultB. egg, larva , pupa and adultC. egg , nymph , pupa and adultD. egg , larva , nymph and adult

Answer» Correct Answer - B
417.

Culex and Anopheles show similarity in thatA. females of both transmit diseasesB. larvae float in waterC. larvae lie horizontally , floating parallel to surface of waterD. All of the above

Answer» Correct Answer - D
418.

Anopheles larva differs from that of Culex in havingA. a developed respiratory siphonB. two respiratory siphonC. no respiratory siphonD. None of the above

Answer» Correct Answer - C
419.

Male and female adult Culex can be indentified by theirA. body sizeB. length of wingsC. length of proboscisD. lengths of maxillary palps

Answer» Correct Answer - D
420.

The common housefly belongs to orderA. LepidopteraB. HemipteraC. DipteraD. Homoptera

Answer» Correct Answer - C
421.

Adult Anopheles and Culex mosquitoes can be distinguished by their characteristicA. colourB. feeding habitC. body sizeD. sitting posture

Answer» Correct Answer - D
422.

Assertion(A): In sponges, archaeocytes are totipotent. Reason( R): They give rise to all types of amoebocytes and are self replicating.A. Both Assertion and Reason are true and Reason is the correct explanation of AssertionB. Both Assertion and Reason are true but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is FalseD. Assertion is false, but Reason is true.

Answer» Correct Answer - A
Archaeocytes are cells of sponge which play an important role in reprodution and regeneration . They may be converted into other types of cells are also called undifferentiated totiponent cells.
423.

Match the following cloumns . A. `{:(A,B,C,D),(3,2,1,4):}`B. `{:(A,B,C,D),(4,3,2,1):}`C. `{:(A,B,C,D),(4,2,3,1):}`D. `{:(A,B,C,D),(2,3,1,4):}`

Answer» Correct Answer - D
424.

Which types of cells are absent in spongesA. TrophocytesB. myocytesC. ArchaeocytesD. Cnidocytes

Answer» Correct Answer - D
425.

Totipotent cells of sponges areA. ChromocytesB. myocytesC. ThesocytesD. archeaocytes

Answer» Correct Answer - D
426.

Flatworms excrete throughA. KidneyB. nephridiaC. protonephridiaD. Malpighain tubules

Answer» Correct Answer - C
427.

In most simple type of canal system of porifera, water flows through which one of the following waysA. Ostia `to` Spongocoel `to` Osculum `to` ExteriorB. Spongocoel `to` Ostia `to` Osculum `to` ExteriorC. Osculum `to` Spongocoel `to` ExteriorD. Osculum `to` Ostia `to` Spongocoel `to` Exterior

Answer» Correct Answer - A
428.

Read the following statements . I. In Porifera excretion mainly occurs by diffusion II. Sponges are ammonotelic animals. III. Sponges are filter feeders also known as suspension feeders. Which of the statements given above are correct ?A. I and IIB. I and IIIC. II and IIID. I, II and III

Answer» Correct Answer - D
429.

Scypha belongs in a group of animals which are best described as I. multicellular without any tissue organisation. II. Mostly marine and having collared cells. IV. Circulatory system constitued by intercommunicating cavities in the body.A. I and IIB. I,II and IVC. III and IVD. I,II and III

Answer» Correct Answer - D
430.

Which one of the following is not a differnece between a sponge and Metazoa ? I. Division of labour II. Cell division III. Sponges do not contain blood IV. Cell organisationA. I, II and III are correctB. II and IV are incorrectC. Only IV is correctD. III and IV are correct

Answer» Correct Answer - A
431.

Recent biochemical evidence indicated that cnidarians , as well as sponges , might have evolved from protists quite independently from the animals . Which of the following also sugggests a separate origin ?A. cnidarians are unsegmentedB. cnidarians have no nervous tissueC. cnidarians are radially symmetricalD. cnidarians have gastrovascular cavity

Answer» Correct Answer - C
432.

Which of the following cells are useful for feeding in sponges?A. ThesocytesB. Collar cellsC. PinacocytesD. Malpighain tubules

Answer» Correct Answer - D
433.

Which one of the following is the most distinctive character of sponges ?A. They are acellularB. They possess special cells called choanocytesC. They reproduce asexuallyD. They are all marine

Answer» Correct Answer - B
434.

Sponges are primitive multicellular animals and haveA. cellular level of organisationB. tissue level of organisationC. organ level of organisationD. organ system level of organisation

Answer» Correct Answer - A
435.

Sponges are multicellular organisms yet they have no respiratory organs. This is due to the reason thatA. the nmode of respiration is anaerobic.B. presence of highly porous body through which water flows.C. limited reqiurement of oxygen, neglecting need of separate system for respirationD. the respiratory organs become non-functional in marine water

Answer» Correct Answer - B
436.

The number of gills present in Osteichthyes isA. 2 pairsB. `6-15` pairsC. 5 pairsD. 4 pairs

Answer» Correct Answer - D
437.

Arachnids possessA. 3 pairs of legsB. 4 pairs of legsC. 5 pairs of legsD. 6 pairs of legs

Answer» Correct Answer - B
438.

Zoochlorellae and zooxanthallae present in Hydra areA. symbionts in nutritave cellsB. symbionts in the gutC. symbionts in cnidoblastsD. organisms that provide hypnotoxin

Answer» Correct Answer - A
439.

Which of the following is not a characteristic of arthropods ?A. Organ system level of organisationB. Bilaterally symmetrical , triploblastic animalsC. Segmented , coelomate animalsD. Body is covered by calcareous shell

Answer» Correct Answer - D
440.

How many simple ocelli a housefly has ?A. OneB. TwoC. ThreeD. Many

Answer» Correct Answer - C
441.

Eggs of Anopheles are foundA. singly with air floatB. In rafts with air floatsC. single without air floatsD. In rafts without air floats

Answer» Correct Answer - A
442.

Which is gynandromorph type of animal ?A. DrosophilaB. BeetlesC. SilkwormsD. All of the above

Answer» Correct Answer - D
443.

Which of the following statement(s) is/are correct about arthropods ?A. They are mostly dioecious and oviparousB. Fertilisation is internalC. Development may be direct or indirectD. All of the above

Answer» Correct Answer - D
444.

In housefly , pseudotracheae are found inA. rostrumB. labellumC. basiproboscisD. haustellum

Answer» Correct Answer - B
445.

Common House fly (Musca nebulo) layes eggs onA. stagnant waterB. hanging ropesC. cow/horse dungD. open meats and sweets

Answer» Correct Answer - C
446.

In arthropods , excretion takes place through theA. flame cellsB. Malpighian tubulesC. gillsD. tube feet

Answer» Correct Answer - B
447.

Choose the correct set of disease transmitting arthropods.A. tse-tse fly , housefly , rat flea , sandflyB. Anopheles , louse , housefly , termiteC. cockroach , louse , termite , houseflyD. rat flea , butterfly , housefly , tse-tse fly

Answer» Correct Answer - A
448.

Assertion Prawn have walking legs . Reason Prawn can swim with the help of walking legs .A. If both Assertion and Reason are true and Reason is the correct explanation of AssertionB. If both Assertion and Reason are true , but Reason is not the correct explanation of AssertionC. If Assertion is true , but Reason is falseD. If Assertion is false , but Reason is true

Answer» Correct Answer - B
The prawn crowls at the bottom of the river or pond by means of its walking legs . It can swim forward in a leisurely manner by beating its swimmerets or the abdominal appendages .
449.

Assertion Point of an arrow larva is seen in some molluscs . Reason Point of an arrow larva is the characteristic of freshwater mussel .A. If both Assertion and Reason are true and Reason is the correct explanation of AssertionB. If both Assertion and Reason are true , but Reason is not the correct explanation of AssertionC. If Assertion is true , but Reason is falseD. If Assertion is false , but Reason is true

Answer» Correct Answer - B
In molluscs , some freshwater mussels have the characteristic glochidium larva , which is also known as point of an arrow . It is so named because of its minute size (0.1 - 0.4 mm) . The glochidium is a special microscopic larval stage of larger freshwater mussels .
450.

Tracheal gills are present in the larva ofA. houseflyB. butterflyC. mosquitoD. cockroach

Answer» Correct Answer - C