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1.

In which of the following animal dimorphic nucleus is foundA. Amoeba proteusB. Plasmodium vivaxC. ParameciumD. Trypanosoma gambiense

Answer» Correct Answer - C
Paramecium caudatum shows nuclear dimorphism. There are two type of nuclei - a large bean shaped polyploid vegatatives nucleus called macronucleus and a small rounded diploid reproductive nucleus known as micronucleus.
2.

Chief advantage of encystment to an Amoeba isA. The chance to get rid of accumulated waste productsB. The ability to survive during adverse physical conditionsC. The ability to live for some time without ingesting foodD. Protection from parasites and predators

Answer» Correct Answer - B
Amoeba forms a cyst and reptoduces by multiple fissions, during adverse environmental condition.
3.

Infection of Entamoeba histoloytica is prevented byA. Avoiding kissingB. Avoiding clothese of patientC. Uncontaminated foodD. None of the above

Answer» Correct Answer - C
4.

Entamoeba histolytica infection ocuurs throughA. Contaminated water and foodB. SweatC. Birds droppingsD. Mosquito bites

Answer» Correct Answer - A
Infection depends upon intake of food or water contaminated with faecal matter containing tetranucleated cyst of E. histolytica.
5.

Assertion : Trichomonas vaginalls causes infection only in women. Reason : Trichomonas buccalis lives in the buccal cavity.A. If both the assertion and the reason ate true but the reason is not correct explanation of the assertionB. If both the assertion and the reason ate true and the reason is a correct explanation of the assertionC. If the assertion is true but the reason is falseD. If the assertion is false but the reason is true

Answer» Correct Answer - D
Trichomonas vaginalis inhibits vagina of women and causes the disease known as leucorrhoea. In males the parasite produces irritation in urethra. Trichomonas buccalis resides in the buccal cavity, which is nearly harmless.
6.

The active form of Entamoeba-histolytica feeds uponA. Mucosa and submucosa of colon onlyB. Food in intestineC. Blood onlyD. Erythrocytes, mucosa and submucosa of colon

Answer» Correct Answer - D
Magna (Trophozoite) stage of Entamoeba histolytica feeds on mucus and RBC.
7.

Which infective stage of the plasmodium contained by the female Anopheles that transfer into human body and causes malariaA. MesozoitesB. GametocyteC. SporozoiteD. Schizont

Answer» Correct Answer - C
8.

Centric discoid form of diatom isA. DiploneisB. CoscinodiscusC. StephanodiscusD. Camphyloneis

Answer» Correct Answer - B
9.

Sandfly is causative agent ofA. Kala-azarB. Sleeping sicknessC. TyphoidD. Dysentery

Answer» Correct Answer - A
Leishmania donovani is the parasite of kala-azar or dum-dum fever. These parasite is transmitted by sand fly.
10.

Cell wall are preserved as fossils in one of the followingA. DinophyceaeB. BacillariophyceaeC. CyanophyceaeD. Euglenophyceae

Answer» Correct Answer - B
11.

Infective slage of Entamoeba histolytica isA. TrophozoiteB. Pre-cystC. Uninucleate cystD. Tetranucleate cyst

Answer» Correct Answer - D
Tetranucleate (= Quadri) cyst is infected stage of Entamoeba histolytica. Infection is oral through contaminated food and water.
12.

Murein is not found in the cell wall ofA. NostocB. EubacteriaC. CyanobacteriaD. Diatoms

Answer» Correct Answer - D
13.

Euglena is aA. CiliateB. SporozoanC. FlagellateD. Sarcodine

Answer» Correct Answer - C
14.

Flagellum of Astasia/Euglena isA. PantonematicB. AcronematicC. PantachronematicD. Stichonematic

Answer» Correct Answer - D
15.

Which animal exhibits sexual dimorhismA. LobosaB. CiliataC. SporozoansD. Radiolarians

Answer» Correct Answer - A
16.

Which one is correct pairingA. Hydra-AnthozoaB. Paramecium-ArachnidaC. Plasmodium-SporozoaD. Amoeba-Ciliata

Answer» Correct Answer - C
17.

Slipper animalcule isA. ParameciumB. TrypanosomaC. EntamoebaD. Protozoa

Answer» Correct Answer - A
18.

Which one resides in the mouth of human beingsA. Entamoeba coliB. Entamoeba histolyticaC. Entamoeba gingivalisD. Amoeba proteus

Answer» Correct Answer - C
19.

In life cycle of Plasmodium, exflagellation is seen inA. MicrogametocytesB. TrophozoitesC. MacrogametocytesD. Merozoites

Answer» Correct Answer - A
20.

Which of the following unicellular organism has a macronucleus for trophic function and one or more micronuclie for reproductionA. EuglenaB. AmoebaC. ParameciumD. Trypanosoma

Answer» Correct Answer - C
21.

Presence of two tyoes of nuclei, micronucleus and macronucleus, is characteristic of protistan groupA. SporozoaB. CiliataC. FlagellataD. Sarcodina

Answer» Correct Answer - B
Two different type of nucleus, present in ciliata group are micronucleus and macronucleus. Micronucleus take part in reproduction while macronucleus is large kidney shaped which control matabolism.
22.

In Paramecium, both autogamy and Conjugation are sexual processess because ofA. Gene recombinationB. Involvement of two individualsC. Fusion of two haploid nucleiD. Rejuvenation

Answer» Correct Answer - C
23.

Which is not true for ParameciumA. Under unfavourable conditions, forms cystsB. Presence of large number of cilia on whole body surfaceC. Contain contractile vacuoles for osmoregulationD. Use pseudopodia for capturing prey

Answer» Correct Answer - D
24.

The cilia in Paramecium areA. All equalB. All unequalC. Longer at posterior endD. Longer at anterior end

Answer» Correct Answer - C
The cilia of extreme posterior end are longer and form a bunch called caudal tuft.
25.

The class of Trichonympha isA. CalcariaB. ScyphozoaC. SporozoaD. Mastigophora

Answer» Correct Answer - D
26.

Paramecium is aA. ProtozoanB. BacteriumC. VirusD. Annelid

Answer» Correct Answer - A
27.

Monocystics belong to the orderA. GregarinidaB. CoccidiaC. MicrosporidiaD. Sarcosporidia

Answer» Correct Answer - A
28.

Assertion : Amoeba contains a contractile vacuole. Reason : It helps in both digestion and osmoregulation.A. If both the assertion and the reason are true but the reason is not correct explanation of the assertionB. If both the assertion and the reason are true and the reason is 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
Contractile vacuole in Amoeba is a single, clear rounded pulsating structure which is filled with a watery fluid and enclosed by a unit membrane. It helps in the osmoregulation and excretory activities. Digestion in Amoeba occurs in the food vacuoles. These are spherical species small and large, contain water and food in various phase of digestion. As soon as the egestion of non digestion food occurs through body these get disappear.
29.

Which protozoan in unlikely to have a contractile vacuoleA. EuglenaB. ParameciumC. AmeobaD. Plasmodium

Answer» Correct Answer - D
30.

Sexual reproduction in protists with diploid chromosomes involvesA. Cyst formationB. Zygotic meiosisC. Gametangial meiosisD. Binary fission

Answer» Correct Answer - C
31.

Protists obtain food asA. Photosynthesisers, symboints and holotrophsB. PhotosynthesisersC. ChemosynthesisersD. Holotrophs

Answer» Correct Answer - A
32.

Nutrition in protists isA. HolophyticB. HolozoicC. SaprozoicD. All of these

Answer» Correct Answer - D
33.

Protists are 1. Unicellular and prokaryote 2. Unicellular and eukaryote 3. Multicellular and eukaryote 4. Autotroph and heterotrophA. 1+2+3B. 2+3+4C. 3+4D. 2+4

Answer» Correct Answer - D
Protists are prititive single celled organism with cell organised nucleus, which shows auto as well as heterotrophic mode of nutrition.
34.

Plasmodium, the malarial parasite, belongs to classA. SarcodinaB. CiliataC. SporozoaD. Dinophyceae

Answer» Correct Answer - C
35.

Passive food ingestion in Amoeba is known asA. ImportB. InvaginationC. CircumfluenceD. Circumvallation

Answer» Correct Answer - A
Import involves passive sinking of food into body by rupture of plasmalemma, e.g., Ingestion of algae.
36.

E. histolytica does not showA. Binary fissionB. BuddingC. EncystationD. Excystation

Answer» Correct Answer - B
37.

Protists containsA. Euglena, Dinoflagellates and YeastB. Amoeba, Paramaecium, HydraC. Euglena, Paramaecium, MushroomD. Amoeba, Paramaecium and Dinoflagellates

Answer» Correct Answer - D
Amoeba and Paramecium are protozoan protist while dinoflagellates are photosynthetic protist.
38.

Two species of Amoeba X and Y were kept in fresh water and got adapted. Species X developed to contractile vacuole. When both were transferred to sea water and got adapted, both X and Y lost their contractile vacuole. Form these observation we conclude thatA. Both X and Y are marine speciesB. Species Y is marine and X is fresh waterC. Species X is marine and Y is fresh waterD. Both X and Y are fresh water

Answer» Correct Answer - C
39.

Destruction of nucleus in Amoeba results inA. Immediate deathB. Slowing down of metabolic activity and ultimate deathC. Quick locomotionD. No change

Answer» Correct Answer - B
40.

Amoeba takes food throughA. PhagocytosisB. PinocytosisC. EndocytosisD. All the above

Answer» Correct Answer - D
41.

Common trait between Amoeba and leucocyte isA. EncystmentB. PseudopodiaC. SporulationD. Contractile vacuole

Answer» Correct Answer - B
42.

Amoeba touched with needle willA. DieB. Divide quicklyC. Develop pseudopodiaD. Move away

Answer» Correct Answer - D
Amoeba will move away from contact with a foregin object or a probe while crawling or resting.
43.

Which is not locomotory organ of protozoaA. CiliaB. FlagellaC. PseudopodiaD. Parapodia

Answer» Correct Answer - D
Parapodia is the locomotory organ of Nereis (Annelida).
44.

Locomotory structures of Amoeba areA. CiliaB. FlagellaC. PseudopodiaD. None of the above

Answer» Correct Answer - C
45.

Class sporozoa of phylum protozoa is characterised byA. FlagellaB. CiliaC. ParasitismD. None of these

Answer» Correct Answer - C
Membes of this class are exclusively endoparasites.
46.

Locomotory organ of sporozoa isA. TentaclesB. ReticulocytesC. LegsD. None of the above

Answer» Correct Answer - D
47.

The reason of psedopodium formation isA. Chemical changesB. Difference in the vicosityC. Difference in the pressureD. Change in the temperature

Answer» Correct Answer - B
Pseudopodium is formed due to different viscosity of sol and gel.
48.

Excretion in Amoeba occurs throughA. NucleusB. ParapodiaC. PlasmmlemmaD. Contractile vacuole

Answer» Correct Answer - C
Being unicellular, no specific excretory system develop so this function can be perfomed by plasmalemma by diffusion process.
49.

Which is filter feederA. AmoebaB. LeechC. SpiderD. Paramecium

Answer» Correct Answer - D
50.

Which is false for nutrition in AmoebaA. OmnivorousB. Pseudopodia feederC. Holozoic nutritionD. Photoautotroph

Answer» Correct Answer - D
Amoeba is omnivorous and its mode of nutritions is holozoic. It feeds by phagocytosis. Amoeba captures and engulfs its prey by means of pseudopodia.