Which is an invertebrate?

a-eagle
b-fish
c-snake
d-shrimp

shrimps, like lobsters and crabs have exoskeletons.

shrimp

An invertebrate is an animal that does not have a backbone. From the options given, the invertebrate is option D - shrimp. Shrimps belong to the phylum Arthropoda, which is a group of animals that lack a backbone.

To determine which option is an invertebrate in the given choices, you need to understand what an invertebrate is. Invertebrates are animals that do not have a backbone or vertebral column. Let's analyze each option:

a) Eagle: Eagles are birds and classified as vertebrates because they have a backbone. Therefore, it is not an invertebrate.

b) Fish: Fish are a diverse group of aquatic vertebrates, and they do have a backbone. So, fish are not invertebrates.

c) Snake: Snakes are reptiles, and like other reptiles, they have a vertebral column. Hence, snakes are also vertebrates.

d) Shrimp: Shrimp, on the other hand, are small crustaceans belonging to the invertebrate group. They lack a backbone, making them the correct answer for an invertebrate among the given options.

Therefore, the correct answer for an invertebrate among the choices provided is option d) shrimp.