Question
Select the incorrect statements from the following:
A. Digestive system in Platyhelminthes is incomplete.
B. Bilateral symmetry is a characteristic feature of adult Echinoderms.
C. Pseudocoelom is possessed by Aschelminthes.
D. Notochord is persistent throughout life in the class Chondrichthyes.
E. Members of class Reptilia maintain a constant body temperature.
Choose the answer from the options given below:
Options
Solution
Sol. [Key Concept: Selecting the incorrect statements]
A. → correct → Platyhelminthes have an incomplete digestive system.
B. → incorrect → Bilateral symmetry is a characteristic feature of larvae of echinoderms. In adult echinoderms, radial symmetry is seen.
C. → correct → Aschelminthes are characterised by the presence of pseudocoelom.
D. → correct → Notochord is persistent throughout life in the Chondrichthyes.
E. → incorrect → Reptiles are cold-blooded organisms and thus, they cannot maintain a constant body temperature.
Warm-blooded organisms like birds and mammals can maintain a constant body temperature.
Thus, as the incorrect statements are indicated by (B) and (E) only
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