ENTOMOLOGY 205

Exam #1 September 27, 2000

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. You need to provide a correct answer (there may be more than 1 correct answer) but not all correct answers.

1. Name a segmented appendage on the insect head _________________. Describe typical appearance (as in Orthoptera) of appendage listed in the above blank ________________. Name another segmented appendage of the insect head __________________. Describe its typical appearance ________________________.

2. Name an insect order (except the order of beetles) with 4 wings but which only uses 1 pair to fly ____________________. What do the modified (non-flying) wings look like (for order listed in blank above) ________________________ and what is their purpose _____________________________________.

3. Name an insect order that lacks wings _______________________. Since adults lack wings how does it move about (besides walking)?_____________________________ Where would you go to find adults of this order?______________________________

4. The exoskeleton layer that produces the chitin protein is the _____________________. Chitin is used in the ______________________ layer of the cuticle. One (of several) functions of exoskeleton is ______________________ -what layer primarily is involved with the function you listed in the blank above? _______________________________

5. A smaller bodied insect has a high _____________________ compared to a larger bodied insect but it has a smaller amount of ______________________. Name one of the orders with a predominant number of smaller-bodied insects: __________________. How does it compensate for the high feature you listed in the first blank _____________________.

6. Mites and ticks are not insects. Their mouthparts are ________________. They have ________________ body regions and lack ___________________ which insects posses. They are classified to Phylum _____________________, Class ____________________.

7. The insect order ______________________ possesses a very descriptive name because members of the order have ______________________ (which is what the order name signifies). What is the type of mouth parts _____________________ and metamorphosis ______________________ in this order?

8. After Coleoptera, the largest order in # species of holometabolous insects is the ____________________. The largest paurometabolons order (# species) is ____________________. Insects also are the largest in the sense of ________________. Other than in numbers why do we study insects? _______________________________.

9. The order in which immatures (non-adults) are called caterpillars is _____________ maggots ____________ naiads ______________ true bugs _______________. Why is a horse fly a true fly but a caddesfly is not? _____________________________________.

10. The _______________________ has very large eyes - each individual part of the eye is termed a _____________________. What does this insect with large eyes see very well ____________________ and what improves vision in this insect?___________________

 

11. An insect olympian might be ______________________ in order _________________. It is capable of what olympian activity?________________________ How does it accomplish this feat _____________________ and it uses what major body part to do this activity? (be specific) __________________________________.

12. In the insect chewing mouthparts contain a portion analogus to the lip of human because it closes the cavity - name this insect mouthpart portion _____________________. To be certain the food is appropriate, sense cells on the ____________________ portion of the ________________ part are important. What part (often with teeth) grasps and helps shove food into the mouth cavity? ______________________________

13. Why does an exoskeleton limit the size of the body of insects? _____________________. Why does having an exoskeleton help insure success in insects? _______________________________________________________

14. Name the order:

¼ flies; immature live in water, holometabolous ______________________

chewing mouthparts, paurometabolous, one pair functional wings ___________________ modified mouthparts, order move ends ¼ ptera, large # species _____________________ major plant parts, often without wings as adults, modified mouthparts _______________

15. Name the insect:

Often have large mandibles ___________________

Males have large organ to hold female mating _______________________

Have enlarged coxa for jumping _____________________

Have large tarsi to hold onto host ___________________________

 

II. DIAGRAMS (6 pts. each) Answer all 5 questions.

16. Identify the common and order name of diagrams (A-C)

A _________________ B ________________ C _______________

__________________ _________________ ________________

 

 

 

 

 

 

17. Diagram and label your favorite insect (side external view). Minimum 10 lables. ID common/order of your diagram. ___________________________________________

 

 

 

 

 

 

 

18. What order has mouthparts shown? ___________________

What is A? __________

 

What does this insect eat? ___________

 

19. Label this diagram.

 

20. What is this organism? ________________________

What is the class? __________________________

What type of mouthparts? ____________________

 

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. In insects, the young immature stage may not resemble the adult. Give an example and provide details on 5 specific ways (besides size) the young differs from the adult. Why does it help insects be successful?