Question

Using Figure 26.21 from Campbell's Biology (p. 567), answer the following questions about the hypothesized evolutionary relationships among these eukaryotic groups a. Of the taxa shown in Figure 26.21, which one is most closely related to Fungi? Explain your answer. b. Of the taxa shown in Figure 26.21, which one is most closely related to Plants? Explain your answer. Euglenozoans Forams Polytomy Diatoms Ciliates Red algae Green algae Domain Eukarya Plants Tubulinids Fungi Animals Euryarcheotes Archaea Domain COMMON ANCESTOR OF ALL LIFE Thaumarchaeotes Crenarcheotes Proteobacteria (Mitochondria)* Chlamydias Spirochetes Gram-positive bacteria Cyanobacteria (Chloroplasts)* Domain Bacteria Figure 26.21

Answer 1

a. Animals are most closely related to fungi.

Reason- 1. Photosynthetic pigment chloroplast are absent in both groups.

2. Mode of nutinutri is heterotrophic in both groups.

b. Green algae is most closely related to plants.

Reason- 1. Both groups are photoautotrophic i.e. photosynthetic pigment chloroplast is present.

2. Cellulosic cell wall is present in both groups.