Question:
Choose the incorrect statements regarding Siphonopoda:
I. They show open type of circulatory system.
II. Brain is enclosed in cartilaginous cranium.
III. Some possess ink gland.
IV. Development includes trochophore larva.
Choose the incorrect statements regarding Siphonopoda:
I. They show open type of circulatory system.
II. Brain is enclosed in cartilaginous cranium.
III. Some possess ink gland.
IV. Development includes trochophore larva.
I. They show open type of circulatory system.
II. Brain is enclosed in cartilaginous cranium.
III. Some possess ink gland.
IV. Development includes trochophore larva.
Show Hint
Siphonopoda includes groups like squid and octopuses, which have unique developmental stages and circulatory systems.
Updated On: Mar 19, 2026
- II, III
- I, IV
- I, III
- II, IV
Show Solution
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The Correct Option is B
Solution and Explanation
Siphonopoda does not have a completely open circulatory system (they are more closed in nature).
Trochophore larvae are not typical of Siphonopoda development, as they have a different larval stage.
Thus, the incorrect statements are I and IV.
Final Answer:
I, IV
Trochophore larvae are not typical of Siphonopoda development, as they have a different larval stage.
Thus, the incorrect statements are I and IV.
Final Answer:
I, IV
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