Filo

The video tutorial explains the concept of phylum, a key category in biological classification. It outlines the seven main categories used to classify living organisms: kingdom, phylum, class, order, family, genus, and species. The tutorial details the classification of horses and other animals within the kingdom Animalia, focusing on phylum cordata, which includes vertebrates, and phylum arthropoda, which includes invertebrates with exoskeletons. It also covers phylum mollusca, characterized by soft bodies. The video concludes by highlighting the ongoing nature of biological discoveries and the potential for changes in classification systems.

Which of the following is the largest category in biological classification?

• Phylum

• Species

• Genus

• Kingdom

What characteristic is shared by all members of the phylum Cordata?

• Exoskeleton made of chitin

• Backbone

• Soft body

• Articulated legs

Which phylum includes animals like lobsters and spiders?

• Cordata

• Arthropoda

• Mollusca

• Animalia

What is a common feature of organisms in the phylum Mollusca?

• They have an exoskeleton

• They have a backbone

• They have a soft body

• They have articulated legs

Why might the categories of living things change over time?

• Because biologists make new discoveries

• Because animals evolve new traits

• Because the number of species decreases

• Because the climate changes