Species

The video tutorial introduces the concept of species as one of the seven major biological classifications used to organize living organisms. It explains the hierarchy from kingdom to species, using horses as an example. The tutorial highlights the specificity of species, emphasizing that organisms within a species can reproduce. It also discusses the vast diversity of species, noting that biologists have identified around 2 million species but continue to discover more, especially among insects. The video concludes by acknowledging the ongoing nature of scientific discovery and the potential for changes in classification as knowledge expands.

Which of the following is NOT one of the seven major categories used to classify living things?

• Phylum

• Kingdom

• Genus

• Domain

In which category are horses and all other animals included?

• Phylum

• Class

• Kingdom

• Order

What is the most specific category in biological classification?

• Order

• Family

• Species

• Genus

Approximately how many known species do biologists agree exist?

• 4,000,000

• 3,000,000

• 2,000,000

• 1,000,000

Why might the categories of living things change over time?

• Because biologists make mistakes

• Due to changes in climate

• Due to new discoveries and increased knowledge

• Because species go extinct