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Solution


Q.

The closed circulatory system is found in 
 a) Insects            b) Lobsters                  c) Frog           d) Clams
1 A
2 B
3 C
4 D

Ans.

c) Closed circulatory system is commonly found in vertebrates such as frog, rabbit and man, whereas open circulatory system is found in arthropods (e.g., insects, spiders, crabs) and some molluscs.