13. An aquatic living Fossil with
initial origin and many
primitive characters which
respire through book gills is *
O Limulus
O Cancer
O Lucifer
O Daphnia
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Answer:
Limulus
Explanation:
Answer is A. Limulus - It respires through the Book gills which is also known as Book lungs. The Atlantic horseshoe crab (Limulus polyphemus), also known as the American horseshoe crab, is a species of marine and brackish chelicerate arthropod.
B. Cancer- Respires through gills.
C. Lucifer- Respires through gills.
D. Daphnia- Respires through diffusion.
So, the right answer is Limulus.
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