13. What is the common character of organisms listed below? Ant, Spider, Octopus, Amoeba, Starfish
(A) They all live in water.
(B) They all lack backbone.
(C) They all have scales on their body (
D) They all lay eggs.
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Answer: (B) They all lack backbone.
Ant, Spider, Octopus Amoeba and Starfish all have a commonality that they all lack a backbone. All of these organisms are invertebrates, therefore, they lack backbones.
Vertebrates have backbones, whereas Invertebrates do not.
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Answer:
The backbone or the vertebral column is a long, bony, rod like structure, which extends from the base of the skull to the lower back. The animals which possess the backbone are called vertebrates and the ones which do not possess it are called invertebrates. Ant, spider, octopus, amoeba and starfish, are all invertebrates.So, the answer is B
Explanation:
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