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What is the correct answer?

4

Ascaris is

A. monogenetic

B. digenetic

C. poly genetic

D. any of these

Correct Answer :

A. monogenetic


Related Questions

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Ascaris is not swept out of host's alimentary canal, under the effect of peristalsis because

A. it has slender form of body

B. it is firmly attached to gut wall of host

C. due to its own undulating movement against the direction of peristalsis

D. due to its hard cuticle

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Ascaris is found as endoparasite in

A. blood of man

B. intestine of man

C. muscles of pig

D. body cavity of man

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Which disease is caused by a nematode ?

A. Amoebiasis

B. Filariasis

C. Poliomyelitis

D. Leprosy

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The body cavity of Ascaris is a pseudo-coel because

A. it contains large cells termed pseudo-coelocytes

B. it is bounded externally by muscle layer and internally by intestines

C. it has very little parenchyma

D. it is filled with pseudocoelomic fluid

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The infective stage in the life cycle of Ascaris is

A. fertilized egg

B. cyst

C. second larva

D. third larva

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Number of testis in male Ascaris is

A. one

B. one pair

C. two pairs

D. three pairs

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Development of Ascaris eggs require

A. oxygen

B. moisture

C. a temperature lower than that of human body

D. a temperature higher than that of human body

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In Ascaris mark the correct statement:

A. The testis is monoarchic, telogenic and the sperms are amoeboid

B. The testis is monoarchic, telogenic and the sperms are flagellated

C. The coelom in haemocoel

D. The gonads are metagonic and eggs are centrolecithal

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In Ascaris, the excretory organs are

A. nephridia

B. kidneys

C. excretory cells

D. flame cells

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The intermediate host in the life cycle of Ascaris is

A. cattle

B. man

C. a fresh water fish

D. none of these

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Which of the following is almost devoid of external features ?

A. Liver fluke

B. Tapeworm

C. Blood fluke

D. Nematode worms

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The female genital pore in Ascaris is situated on the ventral side

A. about 1/3 behind from the anterior end

B. middle part of the body

C. about 1/3 ahead of the posterior end

D. terminal at the posterior end

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Which is not a typical character of class Nematoda ?

A. Syncytial epidermis

B. Pseudocoel

C. Non-living cuticle

D. Only parasitic animals and plants

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Infection of Ascaris usually occurs by

A. mosquito bite

B. tse tse fly

C. imperfectly cooked pork

D. contaminated water and vegetables

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The dorsal and ventral lines in Ascaris contain

A. nerve cords

B. nerves

C. excretory canals

D. oviducts

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The life span of Ascaris is

A. more than 30 days

B. six months

C. nine months

D. about an year

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Ascaris lumbricoides is a worm of class Nematoda of the Phylum

A. platyhelminthes

B. annelida

C. arthropoda

D. aschelminthes

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The cuticle has spines in

A. Fasciola

B. Taenia

C. Ascaris

D. Dracunculus

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The period of incubation in Ascaris outside the human body is

A. 4 to 8 days

B. 8 to 14 days

C. 15 to 30 days

D. more than 30 days

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In the Ascaris egg, the first larva hatches out in the

A. stomach of host

B. intestine of host

C. outside the body of host

D. uterus of female ascaris

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Chenopodium oil is successfully used for expulsion of

A. tapeworms

B. liver flukes

C. flat worms

D. roundworms

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Which of the larvae of Ascaris is most pathogenous in the host ?

A. First in embryosphere

B. Second in embryosphere

C. Third in liver

D. Fourth in lungs

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Pineal setae arise from

A. vulva of female Ascaris

B. roof of diencephalon

C. cloaca of an amphibian

D. cloaca of male roundworm

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In Ascaris only the anterior part of the testis is functionable. Such a gonad is known as

A. monarchic

B. didelphic

C. telogenic

D. metagonic

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In the life cycle of Ascaris, the rhabditi form larvae are liberated in the

A. lungs before migrating to small intestine

B. human excreta

C. Soil

D. upper part of small intestine

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Ascaris is

A. monogenetic

B. digenetic

C. poly genetic

D. any of these

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During growth, the Ascaris undergoes moulting in the body of host for

A. two times

B. four times

C. five times

D. six times

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A gravid proglottid has

A. both male and female reproductive organs

B. only male reproductive organs

C. only female reproductive organs

D. branched uterus filled with completed eggs

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Which of the following has no alternate host?

A. Fasciola hepatica

B. Ascaris lumbricoides

C. Plasmodium vivax

D. Tapeworm

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Sense organs of Ascaris are

A. epidermal cords

B. spicules

C. papillae and amphids

D. circumcentric ring