Agricultural Entomology - Study Mode
[#396] Earis vitella is
Correct Answer
(C) Spotted boll worm
Explanation
Solution: Earis vitella is Spotted boll worm. Earias insulana, the Egyptian stemborer, Egyptian bollworm, spiny bollworm, or cotton spotted bollworm, is a moth of the family Nolidae. The larvae feed on okra, cotton and hibiscus, but have also been recorded on rice, sugarcane and corn. Initially, the larva tunnels into the buds of its host plant. Later, the larva feeds on the bolls, which become brown and fall off. Secondary invasion by fungi and bacteria sometimes occurs.
[#397] Opistho genital gonophore is present in the terminal segment in
Correct Answer
(A) Chilopoda
Explanation
Solution: Opistho genital gonophore is present in the terminal segment in Chilopoda. A gonopore, sometimes called a gonadopore, is a genital pore in many invertebrates. Hexapods, including insects, have a single common gonopore, except mayflies, which have a pair of gonopores. Chilopoda is any of various long, flattened, many-segmented predaceous arthropods. Each segment except the hindmost bears one pair of legs. In these, gonopores are close to the animal's tail that is in the terminal segment.
[#398] Brestan is an antifeedant, which is used against
Correct Answer
(B) Cut worms
Explanation
Solution: Brestan is an antifeedant, which is used against Cutworms. Antifeedants are organic compounds produced by plants to inhibit attack by insects and grazing animals. Antifeedants exhibit a wide range of activities and chemical structures as biopesticides. Brestan (triphenyltin acetate) which is used for controlling fungal pathogens of economic crops has been found effective against the potato tuber moth larvae, larvae of Cutworm, sweet potato weevil etc.
[#399] Following is one of the floral host plant recommended for apiary
Correct Answer
(B) Rose
Explanation
Solution: Rose is one of the floral host plants recommended for apiary. Bees drink nectar, however they also need pollen which is their source of protein, and contains nutrients essential for Bees to stay healthy. As roses produce a lot of pollen and Bees visit the roses especially to collect the pollen. The buzzing of bumble bees can be quite loud as they typically grab hold of the anthers and vibrate their thorax against them to release the pollen.
[#400] The process of killing pupa without changing the cocoon shell layer is known as
Correct Answer
(A) Stifling
Explanation
Solution: The process of killing pupa without changing the cocoon shell layer is known as Stifling. Stifling treatments are applied to silk cocoons to kill the pupae, preventing the emergence of moths and allowing them to preserve the silk during long periods. All of them involve the application of aggressive steps, such as sun exposure, hot steam from boiling water or hot air, during hours or even days.