BISC317 Lab Midterm 1 Flashcards
What is meant by anatomically generalized?
The insect has few structures that have specialized functions
The plates on the exoskeleton are called _____, and are separated by _____
Sclerites, sutures
Sclerites on the dorsal surface of the thorax and abdomen are called ____, plates on the ventral surface are called ____, and plates placed laterally between the two are called ____
Tergites, sternites, pleurites
Small, detached plates between segments are called:
intertergites, interstergites, interpleurites
What is found above the base of each antenna and between the antennal bases?
ocelli
What is the primary function of the thorax?
Locomotion
What is the purpose of the tympanum?
It is the ‘ear drum’ or auditory membrane
What is the purpose of valvulae?
To bore into soil in order to lay eggs
What parts make up the proboscis in hemiptera?
mandibular, maxillary stylets, labium
What contains the salivary channel in mosquitoes?
hypopharynx
What parts make up the proboscis in lepidoptera?
paired maxillae or galeae, which are tightly interlocked to form a tube
What is Johnston’s Organ and what is its purpose?
proprioceptor composed of a mass of hairs, located inside the pedicel in antenna and is attached to the base of the flagellum. responds to movement of the flagellum relative to the pedicel, providing insect with information on position
What are some possible leg specializations?
running, swimming, jumping, digging, pollen carrying, walking, grasping
What part of the wing has veins that are unbranched?
Anal
Where are the ganglia located?
3 in the thorax, 8 in the abdomen, 1 in the head
Where are the cardiac chambers located?
two thoracic chambers and 8 abdominal chambers
What is the purpose of the aedeagus?
Present in males for conveying the spermatozoa into the female
What is the purpose of the vagina/genital chamber and ovipositor?
Present in females, a copulatory pouch/recipient organ. ovipositor is adapted for egg laying
What is the purpose of the third valvulae?
to act as a protective sheath
What is the purpose of ovarioles and where are they located?
located in the ovary, eggs develop inside
What is the purpose of the suspensory filament?
to anchor the ovary to the dorsal part of the body wall
What is the purpose of the germinarium?
primordial germ cells differentiate