Dichotomous Key Practice

Front

What is a dichotomous key?

Back

A dichotomous key is a tool that allows the identification of organisms based on a series of choices that lead the user to the correct name of a given item.

Front

What are the two parts of a scientific name?

Back

The two parts of a scientific name are the genus and species name.

Front

What do we examine when using a dichotomous key?

Back

We examine the physical features of the organisms.

Front

What is a key characteristic that distinguishes arachnids from insects?

Back

The presence of antennae; arachnids do not have antennae, while insects do.

Front

What order do insects with two pairs of scaly wings belong to?

Back

Insects with two pairs of scaly wings belong to the order Lepidoptera.

Front

What is the main difference between arachnids and insects in terms of body segments?

Back

Arachnids typically have two body segments (cephalothorax and abdomen), while insects have three body segments (head, thorax, and abdomen).

Front

What type of legs do arachnids have?

Back

Arachnids have jointed legs.

Front

What is the purpose of a dichotomous key?

Back

The purpose of a dichotomous key is to help users identify unknown organisms by answering a series of questions based on their characteristics.

Front

What is the significance of the genus in a scientific name?

Back

The genus is the first part of the scientific name and groups together species that are closely related.

Front

What is the significance of the species in a scientific name?

Back

The species is the second part of the scientific name and identifies the specific organism within the genus.