Question

Main function of pedicellariae in Asterias is

• A. Digestion
• B. Excretion
• C. Respiration
• D. Capture of prey and removal of debris

Answer 1

Answer: (D)

Capture of prey and removal of debris

The oral and aboral surfaces bear small, whitish, specialised jaw-like appendages called as pedicellariae. These are found between the spines of the aboral surface, while they remain attached to the bases of the spines and also lie in the spaces between the spines on the oral surface. These are used for protection, especially against small animals and larvae that may settle on the body surface thereby keeping the body surface free of debris. They may also help in capturing small prey.
Therefore, the correct answer is option D.