Question Detail

BIO 102 Unique characteristics of animals 1 Objective Question
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Question

While most mollusks have an open circulatory system, which group within Phylum Mollusca is known to possess a closed circulatory system?
Options
A Gastropods (e.g., snails)
B Bivalves (e.g., clams)
C Cephalopods (e.g., octopus)
Correct Answer
D Polyplacophorans (e.g., chitons)
Correct Answer

Option C is the correct answer.

Detailed Explanation

The 'Phylum Mollusca (Mollusks)' section notes, 'Circulatory system: Open circulatory system (except cephalopods like octopus - closed).' The 'Comparative Summary' table reiterates this.

Hint

Look for the exception to the general rule for molluscan circulatory systems.

Question Info

Course: BIO 102
Topic: Unique characteristics of animals 1
Type: Objective
Difficulty: Not specified
Question 779 of 802
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