MCQOPTIONS
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| 1. |
Which one of the following is not an example of commensalism? |
| A. | Egret bird sitting on the neck of grazing cattle |
| B. | Orchids growing on mango tree |
| C. | Mycorrhizae |
| D. | Barnacle growing on the back of whale |
| Answer» D. Barnacle growing on the back of whale | |