Question

lesson 5 - animal classification
which animal is not cold-blooded? (1 point)
a fish
a reptile
an amphibian
a mammal
how are animals that have backbones classified?
(1 point)
as jellyfish
as invertebrates
as vertebrates
as insects
mammals have hair or fur.
(1 point)
true
false

Explanation:

First Question: Which animal is NOT cold - blooded?

Cold - blooded animals have body temperatures that vary with the environment. Fish, reptiles, and amphibians are cold - blooded. Mammals are warm - blooded, meaning they can regulate their own body temperature internally.

Animals are classified based on the presence or absence of a backbone. Animals with a backbone are called vertebrates, while those without are invertebrates. Jellyfish are invertebrates, insects are also invertebrates.

One of the defining characteristics of mammals is the presence of hair or fur on their bodies. This hair or fur serves various functions like insulation, protection, etc.

Answer:

D. a mammal

Second Question: How are animals that have backbones classified?