after reading this lab report about flour beetles grwth, please do the following
ID: 99208 • Letter: A
Question
after reading this lab report about flour beetles grwth, please do the following:
disscus why the student had these particular results.
abstract
We obtained 3 glass vials. In one vial, we added 2 grams of whole wheat flour and 4 beetles. In the second vial, we added 6 grams of whole wheat flour with 5 beetles. In the last vial, we added 15 grams of whole wheat flour and five beetles. All vials were stoppered with cotton and were placed in an incubator at a constant temperature in complete darkness by the professor. If the amount of food resources is less than ideal, then the population of the flour beetles will also decrease because of the lack of available material needed to survive. Beetles were observed through the semester.
On the first day of the semester, May 15, three glass vials were obtained. In one vial, we added 2 grams of whole wheat flour and 4 beetles. In the second vial, we added 6 grams of whole wheat flour with 5 beetles. In the last vial, we added 15 grams of whole wheat flour and five beetles. All vials were stoppered with cotton and were placed in an incubator at a constant temperature in complete darkness by the professor.
On the second week, May 22, all 5 beetles in the 15g vial completely disappeared even though it was stoppered with 2 cottons! Hence, no further observations were noticed in this vial. In addition, no particular change in the beetles’ number, growth, reproduction, or behavior were noticed in the other 2 vials, 2g and 6g vials, until the 6th week, June 19. Every other week adults and larvae were counted.
Results.
2 g vial
the 6g vial
the 15g vial
week date adults 1 5/15 4 2 5/22 4 4 6/5 4 6 6/19 4 and 20+larvae 8 7/2 4 adults and 40+larvae 9 7/10 4 adults and 50+ larvaeExplanation / Answer
Answer:
Vial 1: 2 grams wheat flour + 4 beetles
Vial 2: 6 grams wheat flour + 5 beetles
Vial 3: 15 grams wheat flour + 5 beetles
All 3 vials were stoppered and incubated in dark at constant temperature
Expected outcome: Since the flour resource is less, therefore the population of the flour beetle should decrease because of lack of material available to survive.
Observations:
Vial 1: This vial contained 2g wheat flour and 4 beetles to begin with.
Over a span of 6 weeks there was no particular change in number, growth, reproduction or behavior of beetles.
Number of larva increased from 20 to 40 to 50 over a span of ~ 3 weeks
Vial 2: This vial contained 6g wheat flour and 5 beetles to begin with.
Over a span of 6 weeks there was no particular change in number, growth, reproduction or behavior of beetles.
Number of larva increased from 15 to 25 to 30 over a span of ~ 3 weeks and number of adults increased from 5 to 8 within this timespan.
Vial 3: All the beetles escaped from Vial 3 (that contained 15 grams wheat flour and 5 beetles) within a week from the start of experiment.
Explanation:
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.