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INSECT MOUTHPART LAB

INSECT MOUTHPART LAB. Kingdom – Animalia Phylum – Arthropoda Class – Hexapoda (Insects). Insect Classification. Characteristics of Arthropods. The appendages are jointed. The body is formed of a number of segments. They have an exoskeleton. The hard outer covering supports the muscles.

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INSECT MOUTHPART LAB

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  1. INSECT MOUTHPART LAB

  2. Kingdom – Animalia Phylum – Arthropoda Class – Hexapoda (Insects) Insect Classification

  3. Characteristics of Arthropods • The appendages are jointed. • The body is formed of a number of segments. • They have an exoskeleton. • The hard outer covering supports the muscles.

  4. Characteristics of Insects Three Main Body Parts

  5. One pair of antennae. tactile organs sense of touch olfactory organs sense of smell Head

  6. Three pairs of legs. The thorax has three segments. Each segment has one pair of legs. Note: Some larvae have leg-like appendages on the abdomen. Often one or two pairs of wings. The wings are borne by the second and/or third of the thoracic segments. Note: Some insects are wingless. Thorax

  7. The gonopore (genital opening) is at the posterior end of the abdomen. No appendages used for moving on the abdomen of adults (except in a few primitive insects). Sometimes there are some appendages at the end of the abdomen. Abdomen

  8. Insect Mouthparts Siphoning/Proboscis Ex. butterfly Sponging/Lapping Ex. housefly

  9. Piercing/Sucking Ex. mosquito Chewing Ex. caterpillars None Ex. mayfly

  10. Mouthparts Animation http://www.cals.ncsu.edu/course/ent425/library/labs/external_anatomy/anatomy_mouthparts.html

  11. The Scientific Method 1. Problem/Question 2. Research 3. Hypothesis 4. Experiment 5. Conclusion 6. Report Results

  12. Problem / Question • Which insect mouthpart absorbs the largest volume of liquid in a given period of time; siphoning, piercing/sucking, or lapping?

  13. Hypothesis Which mouthpart do you think will absorb the most liquid in 30 seconds? • Sample: The Siphoningmouthpart will absorb the most liquid in 30 seconds. Siphoning is a lot like using a straw and liquid can be obtained quickly using this method. • DO NOT START A HYPOTHESIS WITH . . . “I think”, “I predict” or “My hypothesis is”!

  14. The Experiment • Independent Variable: Type of mouthpart • Dependent Variable: Volume of liquid • Constants: What was kept consistent/same? • List at least 5 factors. • Control Group: N/A • Experimental Group: Mouthpart types (3)

  15. Other Experimental Factors • Materials • How much? Use metric units. • Procedure • List numerically. Be detailed. • Results: Data Table • Used to organize data. • Results: Graph • Used to visualize and analyze data. • Bar/column graph, line graph or pie chart

  16. Data Collection Data Table: Volume of liquid absorbed in 30 seconds.

  17. Data Analysis(Sample Data Table)

  18. Data Analysis(Sample Graph)

  19. Analysis & Conclusion • Make a statement revealing whether the data collected provided support for or against the hypothesis. • Explain the data collected including specific numerical or observational data from the experiment. • Provide a reasonable explanation for the data and attempt to make connections based on the data collected. • What future experiments could be done based on the data collected or how could the experiment be extended to collect more data?

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