ENTOMOLOGY 205
Exam #1 Sept 26, 2001
NAME: _________________________________ SS#: ____________
ILLEGIBLE ANSWERS WILL NOT BE GRADED
Read directions and questions carefully. Think before you respond.
GOOD LUCK. HONESTY IS EXPECTED.
I. FILL-INS (4 pts each question). Fill in each blank with the most accurate and appropriate word or phrase that completes the sentence in the context of this course.
1. Insects might primarily taste with the segmented appendage_____________________ located on the lower head region and taste with the ____________________ segment of the leg on the _______________________ body region. A segmented appendage to feel (touch) located on the abdomen is the __________________________ and another on the head region is _______________________.
2. (NOTE ALL THESE blanks MUST refer to one single order) An insect order with ______________________ metamorphosis and modified forewings (termed ________________) plus another modified appendage (the ____________________ _________________________) is classified in the order __________________ptera.
3. The body covering of insects termed its integument or _____________________ is composed of a protein and polysaccharides organized into how many layers? ________ The material is produced by _____________________ cells and organized into hardened ___________________________ with __________________________ between them.
4. Three advantages of being small in body size (as in insects) are:
1.
2.
3.
Why is small size also a challenge (disadvantage) to a living organism?
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5. An arthropod in the Class Arachnida would have ________________ body regions, ________ antennae and __________ legs Number of legs). How does its chewing mouthparts differ from insects? ______________________________________.
6. ID the insect order:
skin-winged insects:________________________________
adult insects with non-functional mouthparts: ___________________________
order with long antennae and long cerci: _______________________________
order with 4 equal sized, many-veined wings: ___________________________
7. A tiger beetle larva has ______________________________ mouthparts since it eats ________________________. Where would we find the larva? _________________
The adult female lays eggs in _____________________ and has _________________ mouthparts.
8. (ALL BLANKS MUST refer to SAME insect) Name an insect with a proboscis (type of modified mouthpart) __________________ What mouthpart structures are modified to form the proboscis in the insect named above? _________________________________ . What does the insect feed on? _________________ What does its immature (larva or nymph) feed on? ____________
9. Name the insect order for the following flies:
whitefly _________________________ scorpionfly ________________________
dobsonfly ___________________________ deer fly _________________________
and the following bugs:
lace bug __________________________ lighteningbug _____________________
assassin bug ________________________ ladybug _______________________
10. An insect order that has a major negative impact on humans is the order ____________
because _________________________________________. An order with a significant
positive impact is the _____________________ because __________________________
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11. The author Pringle of the Insect flight reading states that insect wings developed from the
behavior of _________________________ but our more current theory is that wings
developed from ___________________________ Describe flight differences in a
primitive insect such as the locust and a more advanced flying insect such as a fly relative
to 1 (ONE ONLY) of these 3 features: wing movement, forward movement or lift.
12. Give two ways to distinguish the nymph from the adult in a paurometabolous insect:
1.
2.
Give two ways a hemimetabolous naiad differs from the adult:
1.
2.
13. All arthropods (including insects) have:
1.
2.
Insects but not other arthropods have:
1.
2.
14. Name the Arthropod order (must apply to the majority of order - not just some members)
adult and naiad eat insects/animals _________________________________________
segmented jointed appendages but no antenna or wings _________________________
paurometabolous, wingless adult ___________________________________________
holometabolous, 2 pair wings unequal in size _________________________________
15. The butterfly siphon tube is a modified ________________ (part of mouthparts) A mosquito mouthpart has _____________ parts that form 2 channels - one of which is used to bring ________________ into the digestive tract. A hemiptera mouthpart has _______ channels to bring ___________________ into the insect's body.
II. DIAGRAMS (6 pts. each) Answer all 5 questions.
16. Identify the order name of diagrams (A-C) and label structure Z for each.
A _________________ B ________________ C _______________
17. Complete this side view of an insect's body (external appendages & body features) and label them. Minimum 10 labels.
18. On outline below finish adding and label usual features for frontal view of insect head. ID the head you have completed - it must be a non-orthopteroid insect.
_________________________
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19. Draw and label the right third leg of an insect that swims or runs.
20. ID the two insect orders and describe what is happening here.
III. SHORT ANSWER (10 pts). Answer the question below as completely as possible. You may use incomplete sentences, phrases, diagrams or other conventions in your response.
21. You go to a beach rental house with your traditional family. On entering your room one parent sees an arthropod and exclaims "Eeek a fly!" while the other gasps "Oh no! ants." Your sibling says "Yuck, a spider," your friend says "Look out! a bee" and your dog thinks "Oh drats, fleas." What you all see is none of the above - it is a _______________ (list an arthropod that it could be other than a fly, ant, spider, bee or flea). Describe how you knew that is what it was and why it was none of the critters your family members (not having taken ENTO 205) thought it was.
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