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Identify the incorrect statements : (i) ...

Identify the incorrect statements : (i) Members of gastropoda exhibit torsion (ii) Aristotle's lantern is present in heart urchins (iii) Anthozoans are polypoid forms (iv) Diplopoda includes centipedes

A

ii, iii

B

iii, iv

C

ii, iv

D

i, ii

Text Solution

AI Generated Solution

The correct Answer is:
To identify the incorrect statements from the given options, let's analyze each statement step by step: 1. **Statement (i)**: "Members of gastropoda exhibit torsion." - **Analysis**: Gastropods, which include snails and slugs, undergo a developmental process known as torsion. This process results in the twisting of the visceral mass, leading to asymmetry in the adult form. Therefore, this statement is **correct**. 2. **Statement (ii)**: "Aristotle's lantern is present in heart urchins." - **Analysis**: Aristotle's lantern is a complex structure used for feeding, primarily found in sea urchins (class Echinoidea). However, heart urchins (a different group within the same class) do not possess this structure. Thus, this statement is **incorrect**. 3. **Statement (iii)**: "Anthozoans are polypoid forms." - **Analysis**: Anthozoans, which include corals and sea anemones, exist only in the polyp form and do not have a medusa stage in their life cycle. Therefore, this statement is **correct**. 4. **Statement (iv)**: "Diplopoda includes centipedes." - **Analysis**: The class Diplopoda refers to millipedes, while centipedes belong to the class Chilopoda. Therefore, this statement is also **incorrect**. **Summary of Findings**: - Correct Statements: (i) and (iii) - Incorrect Statements: (ii) and (iv) Thus, the incorrect statements are (ii) and (iv). ### Final Answer: The incorrect statements are: - (ii) Aristotle's lantern is present in heart urchins. - (iv) Diplopoda includes centipedes. ---
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