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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

Correct Answer :

B. structure for storing sperms


Related Questions

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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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Haemoglobin is dissolved in plasma is

A. Earthworm

B. Ascaris

C. Tapeworm

D. Insects

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In earthworm, the genital papillae are situated ventrally on segments

A. 17

B. 18

C. 19 and 22

D. 17 and 19

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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 female genital aperture in earthworm is present ventrally on segment

A. 10th

B. 12th

C. 14th

D. 18th

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A chitinous lining in earthworm is found in

A. pharynx

B. stomach

C. typholsole

D. gizzard

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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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4

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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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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Chetae are totally absent in

A. Nereis

B. Hirudinaria

C. Heteroneresis

D. Pheretima

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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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Anticoagulant secreted by leech is

A. Hirudin

B. Heparin

C. Haematin

D. Haemozoin

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Nephrostomes are found in

A. integumentary nephridia

B. septal nephridia

C. pharyngeal nephridia

D. none of these

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In Pheretima, the blood glands are located

A. close to lateral hearts in segments 12 and 13

B. along the latero-oesophageal hearts in segments 12 and 13

C. both (a) and (b)

D. behind the pharyngeal mass in segments 4, 5 and 6

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The excretory organs of earthworm are

A. kidneys

B. solenocytes

C. nephridia

D. green glands

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The fertilization in earthworms occurs in

A. oviduct

B. spermatheca

C. cocoon

D. clitellum

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The nitrogenous waste in earthworm consist of about

A. 40% urea and 40% uric acid

B. 50% urea and 40% ammonia

C. 40% ammonia and 20% amino acids

D. 60% ammonia and 20% amino acids

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In earthworm testes are situated in the

A. 10th and 11th segments

B. 11th and 12th segments

C. 14th and 15th segments

D. none of these

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The coelomic fluid in earthworm escapes through

A. dorsal pores

B. coelomic pores

C. nephridial pores

D. anus

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Earthworm is useful because it

A. helps in fixing atmospheric nitrogen

B. helps in making the land porous

C. kills harmful bacteria of the soil

D. helps in making the land fertile by turning it upside down

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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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The terminal nephridial ducts of the septal nephridia of Pheretima open into

A. each intersegmental septum

B. septal excretory canal

C. lumen of the intestine

D. supra-intestinal excretory ducts

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The coelom in Pherethna is

A. continuous throughout

B. continuous throughout except in first 26 segments

C. continuous only in first four segments

D. divided into a number of compartments throughout

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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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Copulation occurs between two earthworms

A. generally at night during rainy season

B. generally at day time during rainy season

C. at night during winter season

D. at night during summer season

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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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Chromophil cells in earthworm are concerned with the secretion of

A. amylase

B. proteases

C. lipases

D. cocoon

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The septal and pharyngeal nephridia open into the alimentary canal and are of enteronephric type. It is an adaptation for

A. conservation of water

B. conservation of heat

C. regulation of temperature

D. regulation of amino acids

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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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Annelids show advancement over the nematoda in having

A. metameric segmentation

B. true coelom

C. closed circulatory system

D. all of these