Invertebrates Such as Grasshoppers Have

Question

Invertebrates such as grasshoppers have
A)both innate and adaptive immune systems.
B)both innate and adaptive immune systems,but the adaptive system is more important.
C)only an innate immune system.
D)only an adaptive immune system.

Accepted Answer

Invertebrates such as grasshoppers have only an innate immune system. They lack the complex adaptive immune system found in vertebrates, which allows for a more targeted response to specific pathogens.