Dichotomous Keys

What is the primary purpose of a dichotomous key?

• To organize personal belongings.

• To identify organisms based on shared characteristics.

• To create new scientific names for species.

• To determine the habitat of an organism.

Why are scientific names preferred over common names in biology?

• Scientific names are shorter and easier to remember.

• Common names are only used in specific regions.

• Scientific names are universal and avoid confusion across languages and locations.

• Only scientists can understand scientific names.

What characteristic distinguishes an autotrophic organism from a heterotrophic organism?

• Autotrophs are multicellular, while heterotrophs are unicellular.

• Autotrophs make their own food, while heterotrophs rely on external food sources.

• Autotrophs have cell walls, while heterotrophs do not.

• Autotrophs are prokaryotic, while heterotrophs are eukaryotic.

Are you enjoying the video lesson?

• Yes

• No

Based on the dichotomous key and provided clues, what is the scientific name of Organism A (Amoeba)?

• Escherichia coli

• Chlorophytum comosum

• Agaricus bisporus

• Amoeba proteus