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The spongocoel is lined by choanocytes in

A. Leucosolenia

B. Sycon

C. Euspnongia

D. Grautia

Correct Answer :

A. Leucosolenia


Related Questions

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Which of the following is given as a gift in Japan?

A. Hyalonema

B. Tethya

C. Euplectalla

D. Pheronetna

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The central cavity of the sponge is also called

A. ostea

B. gastral cavity

C. gut

D. gullet

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Collared, flagellated cells covering large parts of the inner chambers of sponges and helping to keep water circulating are

A. choanocytes

B. porocytes

C. pinacocytes

D. amoebocytes

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The skeleton in sponges is composed of

A. gemmules

B. spicules

C. spongin fibre

D. trychocysts

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In leucosolenia, the scleroblasts perform the function of

A. absorption of food material

B. excretion

C. reproduction

D. formation of spicules

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The commercial bath sponge is made up of

A. siliceous spicules

B. spongin fibres

C. collagen fibres

D. elastic fibres

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Food is stored in-of sponges.

A. trophocytes

B. thesocytes

C. desmocytes

D. archeocytes

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If a carmine particle is put on the os~ culum of a living sponge, it will

A. adhere

B. rotate

C. be ingested

D. none of these

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Lencosolenia is

A. free living, solitary, marine

B. free living, fresh water, solitary

C. free living, colonial, marine

D. Solitary, colonial, fresh water

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Phylogenetically, the sponges have evolved from

A. protozoans

B. flagellates

C. choano flagellate

D. ciliates

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The phylum porifera contains most primitive of multicellular animals called

A. corals

B. sea pen

C. comb jellies

D. sponges

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Ostia are meant to

A. admit water current

B. pass out water current

C. ingest food

D. excrete waste products

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The pathway of entring and coming out of water of sponges is

A. water vascular system

B. canal system

C. feeding current

D. circulating current

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Difference between a sponge and a metazoan is that sponge do not contain

A. cells

B. cell organisation

C. cell division

D. division of labour

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The only fresh water species of sponges is

A. Scypha

B. Euspcmgia

C. Spongilla

D. None of these

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The spongocoel is lined by choanocytes in

A. Leucosolenia

B. Sycon

C. Euspnongia

D. Grautia

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The commercial bath sponge belongs to

A. porifera

B. gatropoda

C. coelenterata

D. ctenophora

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The canal system in sponges does not serve the function of

A. nutrition

B. respiration

C. excretion

D. sexual reproduction

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The skeleton of sponges is mostly composed of

A. choanocytes

B. scleroblasts

C. pinacocytes

D. amoebocytes

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Canal system in Leucosolenia is

A. asconoid

B. syconoid

C. leuconoid

D. rhagon

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Sycon belongs to the class

A. calcarea

B. porifera

C. hexactinellida

D. demospongia

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Which is not a larva of sponge?

A. Planula

B. Stomogastrula

C. Amphiblastula

D. Terogastrula

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The most common composition of skeleton in sponges is :

A. Cartilage

B. Mesenchyma

C. Spicules and spongin fibres

D. Myonemes

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One of the characteristic features of the sponges is the presence of

A. vaselike globular body

B. a central cavity

C. radial symmetry

D. choanocyts

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Sponges belong to the phylum

A. sporozoa

B. mastigophora

C. porifera

D. coelenterata

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The gametes in sponges develop from

A. amoebocytes

B. archeocytes

C. choanocytes

D. myocytes

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Which one of the following is a flagellated larva of Leucosolenia ?

A. Planula

B. Parenchymula

C. Maggot

D. Kedia

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Gemmules are helpful in

A. digestion

B. sexual reproduction

C. asexual reproduction

D. current circulation

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A sponge is a

A. coelomata

B. acoelomata

C. metacoelomata

D. pseudocoelomates

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Which of the following statements is true of sponges ?

A. One mouth and innumerable exits

B. Mouth serves for both, ingestion and egestion

C. Innumerable mouths and one exit

D. The body encloses a single cavity the coeienteron