Question

1. Draw a phylogenetic tree for animals including at least one species from each of the following groups ​in your ecosystem​:

● 4 different invertebrate species from 3 different taxonomic groups.

o Remember: invertebrates are found within the sponges, diploblasts, and protostomes.

● 6 different deuterostome species from 6 different taxonomic groups.

o Remember: deuterostomes are found within the echinoderms, hemichordates,

chordates.

a. In the space below this prompt, write the common & scientific names of the 10 animal species that you

selected to include in your phylogeny. ​(1 point) ​

b. Draw the phylogeny of the 10 animals from the different taxonomic groups, and make sure to label the

branches with the associated species names. ​Only draw branches for these 10 species​. The branches

should reflect the correct evolutionary relationships among the species. ​(3 points) ​

c. Label the common ancestor for ​each clade​ on the phylogeny. You can use general terms for the

ancestors. For instance, if you were labeling a phylogeny that included plants and animals, the

common ancestor would be “eukaryote.” ​(2 points)​

d. Label the nodes with the ​major​ differences between the lineages. ​(2 points) ​

Answer 1

1. 4 species from :- sponges [Scyon], diploblast [Jellyfish], in protostome - annelida [Earthworm], arthropoda [Cockroach ]
2. 6 species from :- echinodermata [Asterias], hemichordata [Balanoglossus], urochordata [AScidia], cephalochordata [Amphioxus or Lancelet], cyclostomata [Pteromyzon], chondricthyes [Scoliodon].

• see the photo for phylogenetic arrangment.  
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