Domain Eukarya: Kingdom Plantae and Kingdom Animalia

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Class Notes 5

• Domain Eukarya Kingdom Plantae and Kingdom
  Animalia

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I. Evolutionary Origins

1. Land plants evolved from green algae (protists)
2. Both are photosynthetic eukaryotes

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II. Plant adaptations

• Plants require different adaptations than algae
  since they live on land.
• Pollen and seeds for reproduction
• B. Cuticles hold in moisture, while stomata can
  open or close to retain or release moisture.

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Continued

• C. Lignin is a special tissue that allows a plant
  to grow upright.
• D. A vascular system acts as a pipeline to carry
  nutrients from roots to leaves.

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III. Plant classification

• Mosses
• 1. Live in moist environments
• 2. No seeds
• 3. No vascular system

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B. Club mosses

• 1. Seedless
• 2. Vascular
• 3. Include ferns

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C. Seedplants

1. Do not depend on water for reproduction since
   they have pollen and seeds
2. Include conifers and flowering plants

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IV. Kingdom Animalia

1. The most physically diverse of all kingdoms.
2. Multicellular heterotrophs
3. Cells supported by collagen
4. Animal are diploid and usually reproduce
   sexually.

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V. Animal phyla

• Animals are placed into groups, or phyla, based
  on three criteria
• 1. Body plan symmetry (bilateral vs radial),
  tissue layers, developmental patterns
• B. Animal phylogeny is being changed as new
  knowledge is gathered.

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Summary

• Why are plants and animals in domain Eukarya?
  What other two kingdoms are in this domain of
  life?