Phylum Mollusca: Class Gastropoda
How many species of subclass Pulmonata have?
17,000 species
19,000 species
15,000 species
12,000 species
17,000 species
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Many snails that are living in marine ecosystem are:A. monoceious
B. dioceous
C. males
D. female
Sea hares and sea slugs are included in subclass
A. pulmonata
B. Prosobranchia
C. opisthobranchia
D. gastropoda
Prosobranchia is subclass of class
A. bivalvia
B. gastropoda
C. cephalopoda
D. Annelida
In some gastropods, mantle in form of a rolled extension named as:
A. shell
B. sheath
C. siphon
D. ocelli
In gastropods, spiral cleavage results in formation of free-living larva named as:
A. trochophore
B. Muller’s larva
C. dipleurula
D. planula
Members of class Gastropoda have
A. open circulatory system
B. close circulatory system
C. lack circulatory system
D. complete circulatory system
Smallest gastropods propel themselves over mucous trail by help of:
A. cilia
B. flagella
C. foot
D. pedal
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