MCQ
In contrast to annelids the Platyhelminthes show
- ARadial symmetry
- BPresence of pseudocoel
- CBilateral symmetry
- ✓Absence of body cavity
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$(1)$ Frog is a poikilotherm.
$(2)$ Frog does not have any coronary circulation.
$(3)$ Heart is “myogenic” in nature.
$(4)$ Heart is autoexcitable.