AP EAMCET Medical 23 Sep 2020 Shift 2 Paper

Which of the following is/are correctly matched?
1) Statocysts - Organ of balancing in Arthropods
2)Radula - Rasping organ for feeding in Mollusca
3) Choanocytes - Collar cells in Cnidaria
4) Proboscis gland - Excretory organ in Hemichordate