Question

Animals which have a backbone are called __________.
A)Mammals
B)Amphibians
C)Vertebrates
D)Invertebrates

Answer 1

Some of the animals with backbone are birds, fishes, whale, reptiles, sharks etc. They possess a spine column at their back.

Complete answer:
Option A ‘mammals’ are characterized under the group of vertebrates where there is presence of mammary glands in females which help them produce milk for feeding their young child. For example: Squirrel, dog, pig, lion etc. Here, the answer is not related exactly to the given question. So, it is incorrect.

Option B ‘amphibians’ means those species which are small vertebrates and possess special skin glands that help them in producing useful proteins. They live in a moist environment to survive. For example: Frogs, toads, salamanders etc. Here, the word used is not accurately representing the question and thus, it is incorrect.

Option C ‘vertebrates’ is an umbrella term which covers mammals, amphibians, reptiles, fishes and birds. They are the most advanced organisms on Earth. They possess a brain, bones and backbone protecting the spinal cord. So, here the word includes all the above options which makes it the most appropriate. Thus, it is correct.

Option D ‘invertebrates’ means those animals which are not vertebrates. For example: insects, spiders, crabs, snails, jellyfish etc. They do not possess backbone which is absolutely incorrect in respect of the given question. Thus, it is incorrect.

Hence, the correct answer is option (C)

Note: Vertebrates have a special feature that they have an adaptive immune system, i.e. they can change themselves according to the environment.