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Note the relationship between the first two words and suggest a suitable word in the missing place. 1. Cockroach – Malpighian Tubule : Flatworm – ..........2. Man – Kidney : Earthworm – ......... 3. Prawn – Greengland : Amphioxus – ......... |
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Answer» 1. Flame cells 2. Nephridia 3. Protonephridia |
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