A) ammonotelic
B) ureotelic
C) ureotelic in water
D) ureotelic over land
Correct Answer: A
Solution :
On the basis of nature of their main excretory matter animals are classified into 4 categories: (i) Aminotelic: The animals which excrete amino acids e.g., Limnaea, Unio and some echinoderms. (ii) Ammonotelic: These animals excrete ammonia e.g., Aquatic invertebrates, bony fishes, tailed amphibians, aquatic reptiles. (iii) Ureotelic: These animals excrete urea. e.g., Frog, toad, mammals, cartilaginous fishes. (iv) Uricotelic: Uric acid is the main excretory product e.g., Insects land reptiles and birds.
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