Q. Which of the following statements are true?
I. Molluscs possess cellular level of organisation.
II. Arthropods are true coelomates.
III. Platyhelminths are pseudocoelomates.
IV. Ctenophores have bilateral symmetry.
Choose the correct option.

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Solution:

Only statement II is correct. Rest of the statements are incorrect and can be corrected as
Mollusca bear organ system level of organisation.
Platyhelminthes are acoelomates.
Ctenophores have radial symmetry.