Biology 32

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Animal Characteristics

Topic (32) Construct an explanation about adaptations resulting from natural selection. (HS-LS4-4)

Animals are multi-cellular, eukaryotic organisms. Animals form the biological kingdom Animalia.  Animals consume organic material, breathe oxygen, are able to move. Animals reproduce sexually, and grow from a hollow sphere of cells (the blastula) during embryonic development.

Over 1.5 million living animal species have been described—of which around 1 million are insects—but some scientists estimate over 7 million animal species in total. Animals range in length from 8.5 millionths of a meter to 33.6 meters (110 ft) and have complex interactions with each other and their environments. Animals form intricate food webs. The study of animals is called zoology. (source)


Day 1 – Introduction
Day 2 – Virtual Textbook

3:37 Characteristics of Animals

4:06 General characteristics of animals

8:07 Animals


Instructor Resources

Standard Daily Material
  • Day 1 – Standard material – introduction day
  • Day 2 – Standard material – reading day
  • Day 3 – Standard material – make a presentation
  • Day 4 – Standard material – give a presentation
  • Extra! – Enrichment and remediation options
Other Topic Specific Resources

Special Notes and Notices

Instructor Emphasis:

  • Science & Engineering Practice: Develop and use models.
  • Cross-Cutting Concept: Systems and System Models.

Emphasize HS-LS4-4  Construct an explanation based on evidence for how natural selection leads to adaptation of populations.

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