External Anatomy

1.    Which structure could be found in both males and females?

Valvifer

Aedeagus

Epiproct

Clasper

 

2.   The pedicel is the name for the:

First leg segment

Second leg segment

First antennal segment

Second antennal segment

 

3.   What is the maximum number of ocelli that may be found in an adult insect?

Zero

Three

Five

Twenty

 

4.   In insects with chewing mouthparts, which structure lies between the mandibles and the maxillae?

Clypeus

Hypopharynx

Labium

Labrum

 

5.   What type of chemical monomer forms the backbone of a chitin molecule?

Lipid

Quinone

Sugar

Amino acid

 

6.   In an abdominal segment, the ventral sclerite is known as:

Epimeron

Notum

Epiproct

Sternum

 

7.   The axilla is a small pleural sclerite located just above the mesepimeron in some insects. It provides a site for attachment of direct flight muscles. On which thoracic segment would you expect to find this sclerite?

First

Second

Third

No way to tell

 

8.   Which mouthparts bear palps?

Labrum and labium

Labium and maxillae

Maxillae and mandibles

Mandibles and labrum

 

9.   The ovipositor is formed by the:

Valvifers and valvulae

Claspers and parameres

Epiproct and paraprocts

Aedeagus and subgenital plate

 

10.   To which body segment are the halteres attached?

Mesothorax

First abdominal

Prothorax

Metathorax

 

11.   What structure braces the head internally and serves as a point of attachment for mandibular muscles?

Tentorium

Pedicel

Furca

Epiproct

 

12.   Which is the correct sequence for the layers in an insect's exoskeleton?

Procuticle, epicuticle, endocuticle

Exocuticle, cuticulin layer, endocuticle

Wax layer, cuticulin layer, exocuticle

Wax layer, endocuticle, exocuticle

 

13.   Which stucture would NOT be found on an insect's pretarsus?

Trochanter

Claws

Spines

Sticky pads

 

14.   In which region of the exoskeleton do quinone cross-linkages form?

Endocuticle

Exocuticle

Procuticle

Epicuticle

 

15.   The tibia lies between:

The trochanter and the femur

The femur and the coxa

The coxa and the trochanter

The tarsus and the femur

 

16.   What is the function of the furca?

It provides a site for attachment of leg muscles.

It is an organ of locomotion.

It prevents water loss.

It is a sense organ.

 

17.   Which structure is NOT found on the thorax of a grasshopper?

Trochantin

Tympanum

Spiracle

Scutellum

 

18.   What is the function of the cement layer in the insect's exoskeleton?

It prevents water loss.

It protects the wax layer from abrasion.

It acts as an insulator during molting.

It makes the exoskeleton rigid.

 

19.   An apophysis is best described as:

An invagination of the exoskeleton

Part of the male genitalia

An internal brace in the head

Part of an insect's pretarsus

 

20.   Which statement about wing veins is INCORRECT?

Veins are laminated between a double layer of membrane.

Veins are hollow and contain hemolymph.

The costa is a vein that forms the wing's leading edge.

Longitudinal veins are parallel to one another and lie in a single plane.