18 Questions
What is the main focus of Phylum Mollusca?
Forming an important part of the ecosystem
Which of the following animals belongs to Phylum Mollusca?
Octopus
What distinguishes many organisms belonging to Phylum Mollusca?
Having a calciferous shell
In what regions can organisms belonging to Phylum Mollusca be found?
Both in terrestrial regions and in the depths of the seas
What is a notable characteristic of Molluscs with shells?
Producing pearls
What is an additional use of some Molluscs aside from being part of the ecosystem?
Being eaten by humans in different regions of the world
What is the size range of molluscan animals?
1 millimetre to 20 metres
Which of the following is NOT a class of extant mollusks?
Oligoplacophora
What is the function of a radula in molluscan animals?
Feeding
What is the organ system grade of organization exhibited by molluscs?
Organ system level
What is the primary source of pearls obtained from molluscs?
From the mantle and shell
In which habitats can molluscan animals be found?
Both aquatic and terrestrial
What is the role of bivalve mollusks as bioindicators?
Indicate pollution levels in water bodies
What is the purpose of a haemocoel in molluscan animals?
Blood circulation
How do natural pearls form in molluscs?
Small foreign object gets stuck between mantle and shell
Which class of molluscs includes snails?
Gastropoda
What is the function of ctenidia in molluscan animals?
Respiration
What type of circulatory system do molluscan animals possess?
Open circulatory system
Learn about the diverse animals belonging to Phylum Mollusca and their significance in the ecosystem. Find out interesting facts about mollusks such as their ability to produce pearls and their consumption by humans.
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