KIDS TRIVIA

Detailed explanation-1: -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.

Detailed explanation-2: -Answer: The bone present on the extreme back of our body is known as backbone. It is also known as the vertebral column or spine.

Detailed explanation-3: -The 5 groups of vertebrates (animals that have a backbone) are fish, amphibians, reptiles, birds, and mammals. Invertebrates are animals that do not have a backbone.

Detailed explanation-4: -Animals without backbones are called invertebrates. They range from well known animals such as jellyfish, corals, slugs, snails, mussels, octopuses, crabs, shrimps, spiders, butterflies and beetles to much less well known animals such as flatworms, tapeworms, siphunculids, sea-mats and ticks.