Question

Which of the following is a systemic insecticide?
A) Malathion
B) Parathion
C) Endrin
D) Furadan

Answer 1

Hint: Insecticides are the substances that are used to kill the insects. Insecticides are used by the farmers in agricultural work in order to kill the insects that harm their crops.

Complete answer:
Types of insecticides:
Insecticides can be classified into two categories:
>Contact insecticides
>Systemic insecticides

Contact insecticides : Contact insecticides have residual or long term activities.These types of insecticides are toxic to the insects upon direct contact. Contact insecticides can be organic as well as inorganic.Organic contact insecticides include metals, Sulfur, Arsenates, Copper and Fluorine, etc.

Systemic insecticides :Systemic insecticides when applied on a plant, they get incorporated and distributed systematically throughout the whole plant.When any insect feeds on that particular plant, insects ingest insecticides also because insecticide is incorporated into each and every part of the plant.The systemic insecticides that are produced by the transgenic plants are called plant incorporated protectants (PIPs). For example – Bacillus thuringiensis gene that encodes for the biocidal protein was introduced into the cotton plant. After the introduction of that particular gene into the plant the plant will start manufacturing the biocidal protein, which kills the insects when insects consume the particular plant.Examples of systemic insecticides include Furadan, Acephate, Thiamethoxam, etc.Therefore, it has been clear from the above discussion that Furadan is a systemic insecticide.

Hence, option D is the correct answer.

Note: Insecticides can also be used in the industries and medical field. Insecticides can alter the ecosystem and many are toxic to the humans and animals also. Insecticides also can spread along the food chain as DDT.