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4

n Amoeba, when transferred from pond water to distilled water, forms

A. contractile vacuoles at a slower rate

B. contractile vacuoles at a faster rate

C. contractile vacuoles at the same rate

D. no contractile vacuoles

Correct Answer :

B. contractile vacuoles at a faster rate


Related Questions

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4

Trypanosoma is transmitted by

A. contamination

B. kissing

C. contagination

D. inoculation

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4

Gametocytes of Plasmodium are formed in

A. liver of man

B. blood of man

C. RBC of man

D. stomach of female mosquito

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4

Benign tertian malaria is caused by

A. P. falciparum

B. P. vivax

C. P. malariae

D. P. ovale

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4

Which of the following organelles are associated with defence in Protozoans ?

A. Nematocysts

B. Statocysts

C. Trichocysts

D. Otocysts

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4

Amoeba secretes digestive enzymes to hydrolyse

A. starch

B. sugar

C. proteins

D. all of these and fats

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4

The catabolic wastes in Amoeba consist of

A. water and CO2

B. water, CO2 and minerals

C. Water, CO2, minerals and urea

D. all of these

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4

The Trx/panosoma causes sleeping sickness in man. It finally involves

A. liver

B. blood

C. brain

D. cerebro-spinal fluid

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4

A liver biopsy of a patient suffering from amoebic hepatic abscess would demonstrate the presence of

A. trophozoites

B. cysts

C. precystic stages

D. sporozoites

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4

Quinine, utilised in the treatment of malaria, is extracted from

A. cinnamom

B. cinchona

C. blister flies

D. red ants

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4

If an Amoeba is placed in salt water, its contractile vacuole will

A. enlarge

B. disappear

C. multiple

D. burst

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4

When kerosene is sprayed on the stagnant water wherein the larvae of Anopheles develop, it

A. burns the body wall of the larvae

B. diffuses through the body wall and kills them

C. suffocates them to death

D. prevents contact of spiracles with air

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4

Gametocytes of Plasmodium are produced in the

A. stomach of mosquito

B. erythrocytes of man from schizonts

C. erythrocytes of man from merozoites

D. all of these

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4

Malaria is a disease transmitted by the bite of

A. male Culex

B. female Culex

C. male A nopheles

D. female Anopheles

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4

All stages in the life cycle of malarial parasite are haploid except

A. gamout

B. ookinete

C. schizont

D. sporont

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4

The mode of life of Plasmodium in man and mosquito respectively is

A. intracellular in both

B. intercellular in both

C. intracellular and intercellular

D. intercellular and intracellular

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4

The schizogony cycle of Plasmodium takes place in

A. alimentary canal of mosquito

B. liver of man

C. liver and RBC of man

D. RBC of man

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4

In an electric field, the Paramecium moves

A. towards the negative pole

B. towards the positive pole

C. around to avoid effect of current

D. forms cyst and does not move

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4

The oriental sores in human skin are caused by

A. Leishmania tropica

B. Phlebotomus

C. Balantidium

D. Leishmania donovani

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4

The feeding stage in the life cycle of PlasA tnodium is

A. merozoite

B. sporozoite

C. cryptozoite

D. trophozoite

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4

Sporozoites of Plasmodium vivax are produced from

A. ookinete

B. gametocytes

C. merozoites

D. sporoblasts

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4

Trypanosoma gambiense inhabits the human body in the

A. blood

B. Lymph

C. blood and cerebrospinal fluid

D. cerebrospinal fluid

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4

The sporozoites of Plasmodium first attack

A. RBC

B. liver cells

C. muscles

D. intestine

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4

In a Paramecium, the trichocysts are used for

A. fight or flight response

B. defence

C. offense

D. both (b) and (c)

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4

Nitrogenous wastes in Amoeba are expelled through

A. plasmalemma

B. pseudopodia

C. hyaline cap

D. contractile vacuole

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4

The function of neuro-motor system of Paramecium is

A. co-ordination of various external stimuli

B. co-ordination of ciliary beat

C. control of contractile vacuole

D. any of these

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4

Schuffner's granules or dots are found in

A. trophozoite

B. sporozoite

C. schizont

D. merozoite

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4

Attack of malaria occurs every fourth day when patient is infected by

A. Plasmodium ovale

B. Plasmodium malariae

C. Plasmodium falciparum

D. Plasmodium vivax

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4

The only stage of malarial parasite that can survive in the stomach of mosquito is

A. ookinate

B. oocyst

C. gametocytes

D. sporozoites

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4

Mapacrine and Paludrine drugs are used for

A. malaria

B. amoebiasis

C. tapeworms

D. ascariasis

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4

The disease caused by Trypanosoma cruzi is

A. sleeping sickness

B. chaga's disease

C. kala azar

D. oriental sore