Animal Kingdom Question 378
Which of the following statement(s) is/are correct regarding phylum Cnidaria?
(i) They are aquatic, mostly marine, sessile or free- swimming, radially symmetrical animals. (ii) They have a central gastro-vascular cavity with a single opening called hypostome. (iii) Digestion is extracellular and intracellular. (iv) Examples are Sycon, Spongilla and Euspongia.
Options:
A) (i) and (ii)
B) (i) and (iv)
C) (i), (ii) and (iii)
D) All of these are correct.
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Sycon, Spongilla and Euspongia are examples of phylum porifera.
Physalia, Adamsia, Pennatula, Gorgonia and Meandrina are examples of phylum coelenterata (cnidaria).
BETA
