Question

what is an animal that is classified as an invertebrate?
○ sponge
○ flounder
○ fish
○ shark

question 16
1 pts
what is the name for animals that do not have a backbone and account for over 98% of all the species on earth?
○ invertebrate
○ cnidarians
○ porifera
○ fish

Explanation:

First Question (What is an animal that is classified as an invertebrate?):

Invertebrates are animals without a backbone. Sponges (poriferans) are invertebrates. Flounder, fish, and shark are vertebrates (have a backbone).

Animals without a backbone are called invertebrates. Cnidarians and porifera are types of invertebrates, not the general term. Fish are vertebrates.

Answer:

A. sponge

Second Question (What is the name for animals that do not have a backbone and account for over 98% of all the species on Earth?):