Morphogenesis

1.    During a molt, which layer of the old exoskeleton is digested by molting fluid, reabsorbed by the epidermal cells, and reconstituted as new procuticle?

Exocuticle

Epicuticle

Endocuticle

Cuticulin layer

 

2.   Which layer of the exoskeleton forms AFTER ecdysis has been completed?

Procuticle

Exocuticle

Epicuticle

Cuticulin layer

 

3.   What is the CORRECT order of these events during a molt?
      1.   Activation of molting fluid
      2.   Digestion of old endocuticle
      3.   Shedding old exocuticle
      4.   Sclerotization (tanning)

1, 2, 3, 4

2, 3, 1, 4

3, 1, 2, 4

3, 4, 1, 2

 

4.   Which of these is INCORRECTLY paired?

White grub -- scarabaeiform

Maggot -- vermiform

Wireworm -- campodeiform

Caterpillar -- eruciform

 

5.   An eruciform larva (caterpillar) does NOT have?

Compound eyes

Prolegs

Mandibles

Claws

 

6.   Which structures would be found in an eruciform larva, but NOT in a scarabaeiform larva?

Prolegs

Ocelli

Mandibles

Spiracles

 

7.   Which larval type does NOT have walking legs?

Scarabaeiform

Vermiform

Eruciform

Campodeiform

 

8.   Imaginal discs are best described as:

Vestigal reproductive organs.

Clumps of undifferentiated cells.

Underdeveloped legs and wings.

Control centers for embryological development.

 

9.   The body form of an obtect pupa is called a(n):

Exuvium

Cocoon

Chrysalis

Puparium

 

10.   Which statement about a coarctate pupa is CORRECT?

The developing legs and wings are externally visible.

The legs and mouthparts remain functional.

The pupa is able to spin a cocoon.

The larval exoskeleton becomes a puparium.