SECTION B QUESTION 2 2.1. Study the phylogenetic tree below and answer the questions that follow Current period Chordata (Mammats) Arthropoda (Insects, crabs and spiders) Annelida (Segmented worms) Platyhelminthes (fiatworms) Cnidaria Porifera (sponges) (jellyfish) Ancient time (millions of 2.1.1. To which phylum do humans being belong ? 2.12. Identify the phylum from the phylogenetic tree, which was last to appear on earth. 2.13. (a) To which phylum do earthworms belong ? (b) Give three characteristics of annelids, 2.14. Read the statement below and answer the questions that follow: (1) (1) (1) (3) Arthropods are vertebrates with hydrostatic skeletons (a) Indicate whether the statement is correct or incorrect. (b) Explain your answer. (1) (2) (9) 6.

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A: Coelom is the fully functional body cavity that is lined by mesoderm. Within the coelomic cavity,…

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A: Given organisms are:

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A: Introduction :- Cladistics is one of the approaches to classify the organisms . In this , organisms…

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A: An extinction event is rapid decrease in the biodiversity on Earth. Extinction is death of species…

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Q: 10. Phylum Mollusca is divided into numerous classes. For example, clams belong to Class Bivalvia,…

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Animal Phylogeny

Cladistics is a method of biological classification where organisms are classified based on their ancestors and their relationship with them. It is defined as the concepts and methods for determining the branching patterns of evolution and evolutionary history. Some scientists, however, have preferred the term phylogenetic systematics or phylogenetic taxonomy to emphasize the reliance on a phylogeny for classification. It is the most common and accepted method for classifying organisms.