Question
Biology Question on Kingdom Animalia
Biradial symmetry and lack of cnidoblasts are the characteristics of:
A
Starfish and sea anemone
B
Ctenoplana and Beroe
C
Aurelia and Paramecium
D
Hydra and starfish
Answer
Ctenoplana and Beroe
Explanation
Solution
Ctenoplana and Beroe exhibit biradial symmetry and lack cnidoblasts. Cnidoblasts are specialized cells used by some organisms, like jellyfish, to capture prey.
So, the correct option is (B): Ctenoplana and Beroe