Multiple Choice QuestionsAll worms are :
triploblastic
segmented
endo-parasites
free - living
A.
triploblastic
All worms which belongs to phylum Platyhelminthes and Aschelminthes are triploblastic i.e. body is composed of three primary germ layers, namely, ectoderm, mesoderm and endoderm. These may be either endo-parasites or exo-parasites and generally devoid of body segmentation.
Pearl oyster is a mollusc which belongs to class :
Cephalopoda
Pelecypoda
Scaphopoda
Gastropoda
As per classification which of the following is correct ?
Ascaris, Pheretima, Grasshopper
Hydra, Pterido, Leucosolenia
Starfish, Grasshopper, Solen
Pila, Dentalium, Octopus
In which of the following class of Annelida, one pair ovaries and several pair testes are found ?
Archiannelida
Hirudinea
Oligochaeta
Polychaeta
Ambulacral grooves are absent in the living forms of the Class
Crinoidea
Asteroidea
Ophiuroidea
Echinodermata
Which of the following Phyla are included in Enterozoa?
Annelida, Mollusca, Porifera
Echinodermata, Hemichordata, Porifera
Mollusca, Arthropoda, Hemichordata
Porifera, Mollusca, Arthropoda
The sites of the first, second and third moulting of the Ascaris larva are respectively
soil, lung and intestine
liver, stomach and intestine
soil, alveoli and alveoli
soil, intestine and lung
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