MCQOPTIONS
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| 1. |
In Hydra, egestion of undigested food and excretion of nitrogenous wastes occur through [CBSE PMT 2001] |
| A. | Mouth and tentacles |
| B. | Mouth and body wall |
| C. | Mouth and mouth |
| D. | Body wall and body wall |
| Answer» C. Mouth and mouth | |