Classifying Organisms

What is a tool scientists use to identify unknown organisms that consists of a series of questions? 

• Hammer
• Dichotomous key
• balance scale
• Encyclopedia

What is the largest phylum of animals?

• Mollusks
• Mammals
• Arthropods
• Vertebrates

Which of the following characteristics are NOT required to be in the animal kingdom?

• Moves around on its own for all or part of its life
• Makes its own food
• Multicellular
• Cannot make its own food

Which of the following are NOT characteristics of mammals?

• Hair or fur on body
• Mothers make milk for babies
• Cold-blooded
• Warm-blooded

Birds are cold-blooded.

• True
• False

Which list is in the correct order?

• Kingdom, class, phylum, order, genus, family, species
• Kingdom, phylum, class, order, family, genus, species
• Class, phylum, kingdom, order, species, family, genus
• Kingdom, phylum, class, order, genus, family, species

Which of the following groups has the least variety of organisms?

• Order
• Species
• Kingdom
• Phylum

Warm-blooded animals control their own body temperature.

• True
• False

The body temperature of cold-blooded animals changes with the temperature of their surroundings.

• True
• False

Which class of vertebrates has soft, moist skin that can absorb oxygen and water?

• Reptiles
• Mammals
• Fish
• Amphibians