The following is from the label on a bottle of PermaGuard® Garden and Plant Inse

Question

The following is from the label on a bottle of PermaGuard® Garden and Plant Insecticide

ACTIVE INGREDIENTS:

Pyrethrins................................... 0.1%

Technical Piperonyl Butoxide......... 1.0%

Diatomaceous earth.................... 88.5%

INERT INGREDIENTS...................10.4%

Total....................................... 100.0%

1. Which of the following ingredients in PermaGuard® Garden and Plant Insecticide is of microbial origin?)

a. pyrethrins

b. diatomaceous earth

c. technical piperonyl butoxide

d. inert ingredients

2. The microbes used to make this active ingredient, are classified as _____, which are members of the kingdom ___ and the domain ___. (Choice from below, please full all three blanks)

prions/Monera/viruses/algae/Eubacteria/molds/Prostista/Archaebacteria/bacteria/Eukarya/Fungi/Animalia/yeasts/Plantae

3. What specific component in the active ingredient you identified in the response to question #1 actually kills the insect larva?

4. The substance identified in response to the previous question is produced by the microbe as part of its...

a. lipid envelope

b. plasma membrane

c. cell wall

d. polysaccharide capsule

5. Briefly explain in your own words how the component identified in response to question #4 kills insect larvae.

Explanation / Answer

1. b. diatomaceous earth

2.. The microbes used to make this active ingredient, are classified as _algae____, which are members of the kingdom _protista__ and the domain Eukarya___..

3. Silica which is present in exoskeleton of diatoms are actually responsible for killing insects.

4.c cell wall.

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