Insects can be divided into two groups historically treated as subclasses: wingless insects, known as Apterygota, and winged insects, known as Pterygota. The Apterygota consist of the primitively wingless order of the silverfish (Thysanura). Archaeognatha make up the Monocondylia based on the shape of their mandibles, while Thysanura and Pterygota are grouped together as Dicondylia. The Thysanura themselves possibly are not monophyletic, with the family Lepidotrichidae being a sister group to the Dicondylia (Pterygota and the remaining Thysanura). COUNT 9
QSN1 What is the term for the class of insects with wings? ANS1 Pterygota QSN2 What is the term for the class of insects without wings?  ANS2 Apterygota QSN3 What group of insects are inclusive within the Monocondylia primarily due to the shape of their mandible? ANS3 Archaeognatha QSN4 What is the collective group to which Thysanura and Pterygota belong? ANS4 Dicondylia QSN5 Insects are historically divided into how many groups? ANS5 two groups QSN6 Insects with wings are known as what? ANS6 Pterygota QSN7 Does an Apterygots have wings or wingless? ANS7 wingless QSN8 What is a Thysanura? ANS8 silverfish QSN9 Thysanura and Pterygota are what? ANS9 Dicondylia