annelida Flashcards
Annelids is __ word
Latin
Annelida means
little rings
segment of annelids
Segmented
symmetry of annelids
Bilateral
triploblastic
coelomate
segments of annelids are separated by?
septa
Neiris are __ water annelids
marine
stylaria are ___ water annelids
fresh water
earth worm (lubricina) is __
Damp soil annelid
Hirudo is
parasitic leech
The mouth of annelida overhung by a lobed structure ___
the prostomium.
Excretion in nematode takes place by specialized structures called __
nephridia
CNS of annelida is
well developed
cns of annelida consists of
simple brain
double longitudinal ventral nerve cord
respiratory system in annelids is
absent
The type of muscles in annelids are
- circular
- longitudinal
means of locomotion in annelids
chetae or setae in earthworm
parapodia in nereis
no setae in leeches
reproduction in annelids
mostly sexual
hermaphrodite in all except nereis ( separate sexes )
larva of annelids is called
trocophore larva
___ are termed as natural plough
earthworm
How many classes in annelids
- Polychaeta
- Oligochaeta
- Hirudinea
Polychaeta have head region and eye structure called
Palps and tentacles
polychaeta are ___ living annelids
marine
organ of locomotion in polychaeta
parapodia
example of polychaeta?
Nereis, Chaetopterus
