Quiz on Classification of Mollusca

What does the term 'Monoplacophora' mean?

• Bearing two plates

• Bearing no plates

• Bearing one plate

• Bearing multiple plates

Which class of Mollusca has a shell composed of eight distinct plates?

• Monoplacophora

• Bivalvia

• Polyplacophora

• Scaphopoda

What type of habitat do Gastropoda occupy?

• Only terrestrial

• Only freshwater

• Only marine

• Both aquatic and terrestrial

Which class of Mollusca is known for having a tusk-shaped shell?

• Polyplacophora

• Cephalopoda

• Bivalvia

• Scaphopoda

What is a characteristic feature of Cephalopoda?

• Presence of a distinct head with tentacles

• Presence of a shell that is always external

• Presence of a segmented body

• Presence of a tongue-shaped foot

Which class of Mollusca is known for forming pearls?

• Bivalvia

• Scaphopoda

• Monoplacophora

• Gastropoda

What type of circulatory system do Cephalopoda possess?

• No circulatory system

• Closed circulatory system

• Simple circulatory system

• Open circulatory system

Which of the following is an example of a Gastropod?

• Dentalium

• Chiton

• Helix

• Unio

What is the developmental stage associated with Scaphopoda?

• Direct development

• Indirect development

• Trochophore larva

• Veliger larva

Which class of Mollusca has a body that is laterally compressed?

• Polyplacophora

• Gastropoda

• Bivalvia

• Cephalopoda