Question:

Which one of the following groups of three animals is correctly matched with their one characteristic morphological feature?


Animals
Morphological features
(a)Scorpion, spider, cockroach
(b)Cockroach, locust, Taenia
(c)Liver fluke, sea anemone, sea cucumber
(d)Centipede, prawn, sea urchin

Updated On: Feb 23, 2024
  • a
  • b
  • c
  • d
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The Correct Option is A

Solution and Explanation

Scorpion, spider and cockroach are invertebrates and belong to the Phylum Arthropoda, therefore they have ventral solid central nervous system. In cockroach and locust, the body is segmented externally. In Taenia, the body is without true segments. Liver fluke has bilateral symmetry, sea anemone has radial symmetry and sea-cucumber has bilateral symmetry in larval form and radial symmetry in adult form. Centipede and prawn have jointed appendages while sea urchin does not have jointed appendages.
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Concepts Used:

Animal Kingdom

Animals are eukaryotic, multicellular species that belong to the Kingdom Animalia. Every animal has a distinct characteristic. They get energy either by feeding on plants or on other animals. There are millions of species that have been recognized, few shares similar characteristics while others vary drastically.

Kingdom Animalia comprises all animals. In the midst of the five kingdoms, the largest kingdom is the animal kingdom. Animals are multicellular eukaryotes. Though, like plants, they do not possess chlorophyll or a cell wall. Therefore, members of the animal kingdom indicate a heterotrophic mode of nutrition. Kingdom Animalia is further classified into ten different subphyla based on their body designs or differentiations.

The different phyla of the Kingdom Animalia are as follows:

  1. Porifera
  2. Coelenterata (Cnidaria)
  3. Platyhelminthes
  4. Nematoda
  5. Annelida
  6. Arthropoda
  7. Mollusca
  8. Echinodermata
  9. Hemichordata
  10. Chordata

Read More: Classification of Animal Kingdom