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4

Metamerism is present in

A. House fly

B. Frog

C. Nereis

D. All of these

Correct Answer :

D. All of these


Related Questions

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Locomotion in Earthworm is directly facilitated by

A. mucus secreted by epidermis

B. segmentation of the body

C. rhythmic contraction of segments

D. setae and contraction of segments

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Blood glands in Earthworm are associated with

A. excretion

B. digestion

C. secretion

D. none of these

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5. The pre-typhlosolar region in Pheretima extends from

A. fifth to twenty-sixth segment

B. first to twenty-sixth segment

C. fifteenth to twenty-sixth segment

D. immediately after clitellar region to twenty sixth segment

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Which region in earthworm is the forest of nephridia ?

A. Pharyngeal region

B. Clitellar region

C. Intestinal region

D. Typhlosolar region

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The fertilization in earthworms occurs in

A. oviduct

B. spermatheca

C. cocoon

D. clitellum

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Spermathecae in earthworm represent

A. coating of sperms

B. structure for storing sperms

C. male copula to ry organs

D. female copulatory organs

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A skeleton like function during locomotion of Pheretima is performed by

A. alimentary canal laiden with mud

B. blood

C. coelmic fluid

D. ventral nerve cord

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Haemoglobin is dissolved in plasma is

A. Earthworm

B. Ascaris

C. Tapeworm

D. Insects

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Structure typically represented in every segment of earthworm is

A. ovary

B. chloragogen cell

C. testes

D. ganglia

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Nereis is commonly called

A. earthworm

B. ringworm

C. roundworm

D. clemworm

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Anticoagulant secreted by leech is

A. Hirudin

B. Heparin

C. Haematin

D. Haemozoin

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In earthworm fertilisation occurs in

A. oviduct

B. water

C. cocoon

D. ootheca

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Annelids show advancement over the nematoda in having

A. metameric segmentation

B. true coelom

C. closed circulatory system

D. all of these

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Sperma thecae in earthworm are meant few

A. producing sperms

B. storage of its own sperms

C. storage of sperms of another earthworm after copulation

D. all of these

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Earthworms do not have any respiratory organs because

A. they do not need them

B. they are burrowing in habit

C. there is no sufficient space for such organs

D. the surface acts as an absorptive area which is larger than the volume

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Pheretima is

A. sterile

B. unisexual

C. hermaphrodite

D. radial symmetrical

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The chloragogen cells of earthworm are analogous to

A. liver of invertebrates

B. liver of vertebrates

C. kidney of vertebrates

D. uriniferous tubules of vertebrates

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The direction of blood flow in the dorsal vessel of earthworm is

A. from the posterior to the anterior end

B. from the anterior end to the posterior end

C. from dorsal vessel to ventral vessel

D. alternately in both directions (a) and (b)

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The female genital aperture in earthworm is present ventrally on segment

A. 10th

B. 12th

C. 14th

D. 18th

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Which of the following statements is correct ?

A. Blood of earthworm is blue in colour

B. Blood pigment of earthworm is haemocyanin

C. Blood pigment of earthworm is red and haemoglobin is dissolved in plasma

D. Blood of earthworm is red and haemoglobin is dissolved in RBC

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Chromophil cells in earthworm are concerned with the secretion of

A. amylase

B. proteases

C. lipases

D. cocoon

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In the blood vascular system of earthworm there are four pairs of hearts present in the first 13 segments. These are situated in the segments

A. 7th, 8 th, 9th and 10th

B. 8th, 10th, 12th and 15th

C. 8th, 9th, 12th and 13th

D. 7th, 9th, 12th and 13th

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A chitinous lining in earthworm is found in

A. pharynx

B. stomach

C. typholsole

D. gizzard

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In earthworm, the first segment in which mouth is situated is known as

A. prostomium

B. peristomium

C. stomium

D. protostomium

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The enteronephric nephridia in earthworm are

A. integumentary

B. pharyngeal only

C. septal only

D. both (b) and (c)

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Role of typhlosole in the intestine of earthworm is

A. to kill bacteria

B. to increase absorptive surface

C. to produce digestive enzymes

D. to control blood flow

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The cliteilum singulum in earthworm is formed by

A. 12,13 and 14 segments

B. 13,14 and 15 segments

C. 14,15 and 16 segments

D. 16,17 and 1&segments

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Chloragogen cells of Pheretima play a role very much like that of

A. Liver of vertebrates

B. Choanocytes of sponges

C. Malpighian tubules of vertebrates

D. None of these

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Metamerism is present in

A. House fly

B. Frog

C. Nereis

D. All of these

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Chetae are totally absent in

A. Nereis

B. Hirudinaria

C. Heteroneresis

D. Pheretima