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Mollusca and Echinodermata MCQs for Competitive Exams

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Mollusca and Echinodermata MCQs for Competitive Exams

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Topic Notes: Mollusca and Echinodermata

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Quick Overview

Mollusca and Echinodermata MCQs in Biology are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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21
How many hearts does an octopus possess as part of its circulatory system?
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22
In which phylum do organisms exhibit both radial and bilateral symmetry during different stages of their life cycle?
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23
Which taxonomic class includes snails?
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24
Which of the following phyla is not classified within the series Proterostomia?
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25
Which organism does the starfish primarily consume, thereby helping to maintain the balance of its local marine ecosystem?
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26
Which marine animal is characterized by a globular body shape?
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27
Which of the following statements regarding the characteristics of mollusks is incorrect?
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28
How many bones constitute the cranium that protects the brain?
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29
Which type of coelom formation occurs via the development of an outpouching from the archenteron?
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30
To which taxonomic class within the phylum Mollusca do snails belong?
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