Mollusca

Front

What is the main difference between an open circulatory system and a closed circulatory system?

Back

An open circulatory system does not allow for as large an organism as a closed circulatory system, which can support larger body sizes due to more efficient blood flow.

Front

Do Mollusca have a true coelom?

Back

Yes, Mollusca are considered to have a true coelom.

Front

How many gills do Gastropods typically have?

Back

Gastropods typically have 2 gills.

Front

Where are the gills located in Polyplacophora?

Back

The gills in Polyplacophora are located between the foot and the mantle.

Front

Which class of Mollusca does not have an open circulatory system?

Back

The class Cephalopoda does not have an open circulatory system.

Front

What are the main classes of Mollusca?

Back

The main classes of Mollusca include Gastropoda, Bivalvia, Cephalopoda, and Polyplacophora.

Front

What is the function of the mantle in Mollusca?

Back

The mantle is responsible for secreting the shell and can also aid in respiration.

Front

What type of feeding mechanism do many Gastropods use?

Back

Many Gastropods use a radula, a tongue-like organ with tiny teeth, to scrape food.

Front

What is the significance of the shell in Mollusca?

Back

The shell provides protection and support for the body of the mollusk.

Front

How do Cephalopods differ from other Mollusca in terms of locomotion?

Back

Cephalopods use jet propulsion for rapid movement, unlike other Mollusca that may use cilia or crawling.