Analogy on Invertebrates and Vertebrates

Which of the following is incorrect?

• Cnidaria: Squid

• Arthropod: Crab

• Mollusk: Octopus

• Echinoderm: Sea star

Answer explanation

The incorrect pairing is 'Cnidaria: Squid' because squids belong to the class Cephalopoda within the phylum Mollusca, not Cnidaria. The other pairings are correct: crabs are Arthropods, octopuses are Mollusks, and sea stars are Echinoderms.

Which of the following is correct?

• Mollusk: Sponge

• Arthropod: Scorpion

• Echinoderm: Crab

• Cnidaria: Spider

Answer explanation

The correct choice is 'Arthropod: Scorpion' because scorpions are classified as arthropods, which are invertebrates with exoskeletons. The other pairs are incorrect as they do not represent valid taxonomic relationships.

Which of the following is incorrect?

• Arthropod: Spider

• Mollusk: Snail

• Cnidaria: Coral

• Echinoderm: Crab

Answer explanation

The incorrect pairing is 'Echinoderm: Crab' because crabs are classified as crustaceans, which belong to the phylum Arthropoda, not Echinodermata. The other pairings are correct.

Which of the following is correct?

• Annelid: Earthworm

• Arthropod: Squid

• Poriferan: Jellyfish

• Mollusk: Starfish

Answer explanation

The correct pairing is Annelid: Earthworm. Annelids are segmented worms, and earthworms are a well-known example. The other options incorrectly match different animal phyla.

Which of the following is incorrect?

• Mollusk: Clam

• Echinoderm: Starfish

• Nematoda: Tapeworm

• Arthropod: Butterfly

Answer explanation

The incorrect pairing is 'Nematoda: Tapeworm' because tapeworms belong to the phylum Platyhelminthes, not Nematoda. The other pairings are correct: clams are mollusks, starfish are echinoderms, and butterflies are arthropods.

Which of the following is incorrect?

• Amphibian: Frog

• Mammal: Shark

• Bird: Eagle

• Reptile: Snake

Answer explanation

The incorrect pairing is 'Mammal: Shark' because sharks are fish, not mammals. The other pairs correctly match the animal types with their respective examples.

Which of the following is correct?

• Fish: Dolphin

• Mammal: Whale

• Amphibian: Snake

• Bird: Bat

Answer explanation

The correct choice is 'Mammal: Whale' because whales are indeed mammals, while the other pairs are incorrect. Fish are not mammals (dolphins), snakes are reptiles, and bats are mammals, not birds.

Which of the following is incorrect?

• Bird: Penguin

• Mammal: Whale

• Fish: Jellyfish

• Reptile: Lizard

Answer explanation

The incorrect pairing is 'Fish: Jellyfish' because jellyfish are not fish; they are invertebrates belonging to the phylum Cnidaria, while fish are vertebrates in the phylum Chordata.

Which of the following is correct?

• Amphibian: Newt

• Mammal: Lizard

• Reptile: Salamander

• Fish: Octopus

Answer explanation

The correct choice is 'Amphibian: Newt' because a newt is indeed an amphibian. The other options incorrectly classify the animals: lizards are reptiles, salamanders are amphibians, and octopuses are cephalopods, not fish.

Which of the following is incorrect?

• Bird: Parrot

• Mammal: Kangaroo

• Fish: Starfish

• Reptile: Gecko

Answer explanation

The incorrect pair is 'Fish: Starfish' because a starfish is not a fish; it is an echinoderm. The other pairs correctly match animals to their respective classes.