Agricultural Entomology - Study Mode

[#201] Which of the following pairs is not correct in the term of Insecticid and Trade name?
Correct Answer

(D) Phorate ⇔ Nuvacron

Explanation

Solution: A. Endosulphan ⇔ Thiodan The trade name of endosulphan is Thiodan. Endosulfan is an off-patent organochlorine insecticide and acaricide that is being phased out globally. It has been used in agriculture around the world to control insect pests. B. Chlorpyrifos ⇔ Dursban Dursban is the common trade name, but it is one product of more than 800 containing the chemical chlorpyrifos. Chlorpyrifos is commonly found in many home-and-garden bug sprays. It is used in some treatments of termites. And it is used on some crops. C. Dimethoate ⇔ Rogor The trade name of Dimethoate is Rogor. It is a systemic insecticide with the added advantage of contact action to give a rapid kill of insect pests hit by the spray at time of application. It controls aphids and several other insect pests on a wide range of horticultural and crops. D. Phorate ⇔ Nuvacron is not correctly matched. The trade name of Phorate is AC 8911, Agrimet, Geomet, Granutox, Phorate 10G, Rampart, Terrathion, Thimenox, Thimet, Timet, Vegfru and Vegfru Foratox.

[#202] Host evasion is a type of resistance which comes under
Correct Answer

(C) Ecological resistance

Explanation

Solution: Host evasion is a type of resistance that comes under Ecological resistance. Ecological resistance is resistance related to favourable environmental conditions at a given location at a particular time. Host evasion occurs when a host passes through the susceptible stages very quickly or during a period when pests are fewer.

[#203] Pitfall trap is used for
Correct Answer

(D) All the above

Explanation

Solution: Pitfall trap is used for Ground beetles, Collembola and Spiders. Pitfall trap is a simple device used to catch small animals. A hole in the ground into which a bucket or pipe is placed into the soil so that the mouth is level with the soil surface. These traps are often used to capture small mammals, reptiles and frogs that fall into the pit and cannot escape due to the smooth walls.

[#204] Following anticoagulant is used for rat control
Correct Answer

(C) Warfarin

Explanation

Solution: The anticoagulant that is used for rat control is Warfarin. Warfarin is a synthetic derivative of dicoumarol, and since 1948 has had a major role in slaughtering rats and mice by stimulating internal bleeding. It was the first anticoagulant rodenticide. It was registered for use in 1950. Warfarin was discovered in moldy sweet clover that had made a herd of cattle sick.

[#205] Tandem copulation is found in which insect order?
Correct Answer

(A) Odonata

Explanation

Solution: Tandem copulation is found in Odonata insect order. The male will either remain in direct contact or reside nearby to defend the female while she lays her eggs. ‘Contact guarding’ occurs when the male remains physically attached to the female in the tandem position. Males that contact guard has greater security against other males trying to mate with the female as it is much more difficult for another male to grab a female that is already in tandem. The tandem position may, however, present a larger target for potential predators such as lizards and birds.