Question

Which of the following statements are true/false?
I. Cell aggregate body plan is found in phylumPlatyhelminthes.
II. Radial symmetry is the most common symmetry found in animals.
III. Pseudocoelom is found only in phylumAschelminthes.
IV. All triploblastic animals have a true coelom.
V. Haemocoel is sometimes observed in animals belong to phylum-Platyhelminthes.

• A. I and V are true and II, III and IV are false
• B. II, III and V are true and I and IV are false
• C. I, II and III are true and IV and V are false
• D. I, II, IV and V are false, Only III is true

Answer 1

Answer: (D)

Only the statement III is correct. Rest of the statements are incorrect and can be corrected as
$\bullet$ Cell aggregate body plan is only found in phylum-Porifera.
$\bullet$ Bilateral symmetry is the most common symmetry found in animals.
$\bullet$ Triploblastic animals like Platyhelminthes lack a coelom. Haemocoel is present in Mollusca and Arthropoda.