Pesticides and Pest Control

Malathion is an organophosphate insecticide widely used for general garden pest control due to its effectiveness and relatively lower toxicity compared to other broad-spectrum pesticides. Bordeaux mixture is a fungicide, while carbofuran and phosphamidon are highly toxic and restricted in many countries.

Pesticides are chemical substances specifically designed to kill, repel, or control pests including insects, rodents, weeds, and other organisms that damage crops or spread disease. Herbicides kill weeds, fungicides kill fungi, and bactericides kill bacteria - but only pesticides have the broad function of insect and pest control as described in the question.

Beauveria bassiana is a fungus that grows naturally in soils throughout the world.

DDT (Dichlorodiphenyltrichloroethane) is a synthetic organochlorine insecticide. Organochlorines are characterized by chlorine-carbon bonds and include notorious persistent organic pollutants like DDT, dieldrin, and endosulfan, known for environmental persistence and bioaccumulation.

Neem seed extract is a natural biopesticide used to control the fruit borer caterpillar in various crops. Neem contains azadirachtin which acts as an antifeedant and growth disruptor for insect pests.

Grain moisture is the critical factor for pest growth in stored grains, as most storage insects require specific moisture levels for reproduction and development. While temperature also affects pest activity (higher temperatures increase metabolism), moisture is the primary limiting factor - even at optimal temperatures, pests cannot thrive in very dry grain. Adequate moisture enables fungal growth, which further facilitates pest infestation.

Captan is a widely used fungicide in agriculture to control fungal diseases on crops. It is not used as a biodegrader, insecticide, or growth regulator.

Correct Answer: Better nutritional quality

Urea is a highly concentrated nitrogenous compound. Because nitrogen is a critical nutrient for plant growth, urea is primarily manufactured and used globally as a chemical fertilizer.

Benzene Hexachloride (BHC), also known as Lindane, is an organochlorine chemical that has been widely used as an agricultural insecticide and a pharmaceutical treatment for lice and scabies.

A. Two chemotherapy drugs, Etoposide and Teniposide, are derived from toxins found in Podophyllum peltatum. The cancer treatment drug Topotecan is an extract of Camptotheca sp. B. Ulmus wallichiana is a timber yielding plant located throughout India. It is moderately hard and strong. It is used for door and window frames, carts and other purposes. C. The Pyrethrins are a pair of natural organic compounds derived from Chrysanthemum cinerariifolium that have potent insecticidal activity. Hence, only statement A is false.

Allethrin is a synthetic pyrethroid used primarily as an active ingredient in household insecticides, such as mosquito coils and sprays.

Here, herbicide is the correct option. Germicide is the medicine that kills germs, pesticide is the medicine to kill pests and insecticide is the medicine to kill insects.

PME (Pectin methylesterase) is an enzyme that catalyzes the de-esterification of pectin. It is widely used in the food industry.

Correct