Question:

Consider the following statements $(A - C)$ each with two blanks. A. Animals like Hydra and jelly fish depict $(i)$ symmetry whereas earthworm and leech show $(ii)$ symmetry. B. In $(iii)$ and $(iv)$ digestive tract has only single opening (mouth) and is said to be incomplete. C. Trichinella (Trichina worm) is a cosmopolitan $(v)$ parasite whereas Fasciola (liver fluke) lives in the bile ducts of the liver of $(vi)$ . Which one of the following options, correctly fills any two statements?

Updated On: Jul 6, 2022
  • (i)-bilateral, (ii)-radial (v)-snail, (vi)-human
  • (iii)-Porifera, (iv)-Pisces (v)-human, (vi)-sheep
  • (i)-radial, (ii)-bilateral (iii)-Coelenterata, (iv)-Platyhelminthes
  • (iii)-Amphibia, (iv)-Annelida (v)-mosquito, (vi)-human
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The Correct Option is C

Solution and Explanation

Answer (c) (i)-radial, (ii)-bilateral (iii)-Coelenterata, (iv)-Platyhelminthes
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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