Question:

Choose the group containing only amniotes

Updated On: Jun 21, 2022
  • Fish, frog, fowl
  • Bufo, fish, frog
  • Wolf, fowl.rabbit
  • Frog.fowl. human
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The Correct Option is C

Solution and Explanation

Animals belonging to Phylum Chordata are fundamentally characterised by the presence of a notochord, a dorsal hollow nerve cord and paired pharyngeal gill slits. Amnion on the other hand is one of the four extraembryonic membranes or foetal membranes viz. amnion, chorion, allantois and yolk sac. The space between amniotic membrane and embryo is filled with amniotic fluid which prevents the desiccation of embryo. Amnion . is not a universal feature of chordates. Chordates are divided into Amniota and Anamniota based on the presence and absence of the amniotic membrane respectively. Anamniotes include agnatha, fishes and amphibians while amniotes include reptiles, birds and mammals.
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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