ACTIVE INGREDIENTS: Pyrethrins………………………….. … 0.1% Technical Piperonyl Butoxide……

Question

ACTIVE INGREDIENTS:

Pyrethrins………………………….. … 0.1%

Technical Piperonyl Butoxide……...   1.0%

Diatomaceous earth……………….. 88.5%

INERT INGREDIENTS……………….10.4%

Total………………………………… 100.0%

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

b. The microbes used to make this active ingredient, are classified as BLANK; which are members of the kingdom BLANK; and the domain BLANK.

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

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

-lipid envelope

-plasma membrane

-polysaccharide capsule

-cell wall

e. Briefly explain in your own words how the component identified in response to part D kills insect larvae.

Explanation / Answer

a. Diatomaceous earth is the active ingredient of Perma Guard which is of microbial origin.

They are made from the fossil remains of small aquatic organisms called diatoms. The cell wall of diatoms are made of silicon di oxide. These are not poisonous but are effective on the garden insects and pest and kill them by drying out the materials from insect body.

Microbes used to make these are DIATOMS.

b.Diatoms belong to Division: Chrysophyta

Kingdom : Chromalveolata

Class: Bacillariophyceae

Domain: Eukaryota

c.The specific component of this insecticide is SILICON DI OXIDE

d.Diatoms produce the silicon di oxide as part of their cell wall.

e..Diatomaceous earth when applied to insects, the silicon di oxide produced by are hard substances and they cut the insect larvae or body into half. This causes them to dry and finally die.

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