CLASSIFICATION OF TEREBELLA
PHYLUM :- ANNELIDA (Metamerically segmented, coelomate and laterally symmetrical. )
CLASS :- POLYCHAETA (Many setae, clitellum absent. )
ORDER :- SEDENTARIA (Tubicolous, sedentary and proboscis not-protrusible, without jaws or teeth.)
GENUS :- Terebella
GEOGRAPHICAL DISTRIBUTION
It is found in Europe, U.S.A., Woods Hole region and Vineyard Sound to Bay of Fundy.
HABIT AND HABITAT
Terebella is a marine, burrowing, sedentary annelid. The animal burrows in tubes in sand. Some species live 10 to 230 fathoms deep.
GENERAL CHARACTERSTICS OF TEREBELLA
- Body is elongated, cylindrical and divided into head and trunk.
- Head is horseshoe-shaped, made up of prostomium and peristomium.
- Prostomium contains number of long filliform bushy tentacles.
- Trunk contains about 60 segments reddish in colour and divided into anterior region or cirri, middle region with cirri and posterior region without cirri.
- Gills or branchiae are found on the dorsal surface of few anterior segments and they form 4 wide comb like branches on a single peduncle.
- Anterior 113 body is thickened while major part of the posterior body tapers narrowly.
- Setae of anterior segments are well developed while reduced in posterior segments.
IDENTIFICATION
The animal the head contains bushy tentacles and all above characters and hence it is Terebella.
OUR POSTS
WHALE (BALAENOPTERA)WHALE (BALAENOPTERA) CLASSIFICATION OF WHALE (BALAENOPTERA) PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with ...READ MORE
HEDGEHOG (ERINACEUS)HEDGEHOG (ERINACEUS) CLASSIFICATION OF ERINACEUS : HEDGEHOG PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with ...READ MORE
ZEBRAZEBRA CLASSIFICATION OF ZEBRA PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present ) Group :- CRANIATA ( Definite head. Cranium with brain present ) ...READ MORE
MANGOOSE : HERPESTESMANGOOSE : HERPESTES CLASSIFICATION OF MANGOOSE : HERPESTES PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with ...READ MORE
WHY ELEPHANTS NEVER FORGETS ?WHY ELEPHANTS NEVER FORGETS ? It’s a not unexpected saying that elephants always remember, and that is why these great creatures are more than just monster strolling on our planet earth. The ...READ MORE
SEAL : PHOCASEAL : PHOCA CLASSIFICATION OF SEAL (PHOCA) PHYLUM :- CHORDATA (Notochord, dorsal tubular nerve cord present and gill slits present) Group :- CRANIATA (Definite head. Cranium with brain present) ...READ MORE
HERDMANIA SLIDESHERDMANIA SLIDES Herdmania : Metamorphosis : Tadpole Larva Larva of Herdmania is called as tadpole larva. After hatching it leads a free-swimming life for 90-180 seconds and then undergoes ...READ MORE
AMMOCOETE LARVACYCLOSTOMATA SLIDES Lamprey : Ammocoete : Larva Whole Mount COMMENTS :- It is one of the stages in the development of lamprey. Egg develops into ammocoete larva, which is a tiny transparent creature ...READ MORE
VERTEBRAL COLUMNVertebral Column Notochord In all chordate embryos, the first axial endoskeleton to appear is a slender, stiff, unsegmented, gelatinous rod, the notochord. It is present below the nerve cord and ...READ MORE
SKULL BONESSKULL BONES SCOLIODON : SKULL BONES Skull consists of :- (A) Cranium and sense capsules, (B) Visceral skeleton. 1. Cranium and sense capsules Made up of a single piece of cartilage and divisible ...READ MORE
