Agricultural Entomology - Study Mode
[#376] DDT was first of all made by the scientist
Correct Answer
(A) Zedler
Explanation
Solution: DDT was first of all made by the scientist Zedler. Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost odorless crystalline chemical compound, an organochloride. DDT was first synthesized in 1874 by the Austrian chemist Othmar Zeidler. DDT's insecticidal action was discovered by the Swiss chemist Paul Hermann Muller in 1939.
[#377] Supra oesophagial ganglion is also called
Correct Answer
(A) Brain
Explanation
Solution: Supra oesophagial ganglion is also called Brain. The supraesophageal ganglion also known as arthropod brain or microbrain is the first part of the arthropod, especially insect, central nervous system. It receives and processes information from the first, second, and third metameres. The supraesophageal ganglion lies dorsal to the esophagus and consists of three parts, each a pair of ganglia that may be more or less pronounced, reduced, or fused depending on the genus.
[#378] In cotton, the serious sucking pest is
Correct Answer
(A) Leaf hopper
Explanation
Solution: In cotton, the serious sucking pest is Leaf hopper. A leafhopper is the common name for any species from the family Cicadellidae. These minute insects, colloquially known as hoppers, are plant feeders that suck plant sap from grass, shrubs, or trees. Aphids that attack the cotton crop are one of the major sucking pests in cotton. These pests suck the liquid from the leaves and cotton boll of small plants and thus restrict the growth of the boll and the plant as well. Both nymphs and adults suck the sap from the under surface of leaves, tender leaves turn yellow, leaf margins curl downwards and reddening sets in.
[#379] The inner core of silk filament, fibrion is a/an
Correct Answer
(A) Protein
Explanation
Solution: The inner core of silk filament, fibrion is a Protein. Silk fibroin is a protein with intrinsic characteristics that make it a good candidate as a scaffold for tissue engineering. Silk is a continuous filament fiber produced by silk worms. The raw fiber consists of two filaments glued together with a substance called sericin.
[#380] EPN multiplied on the live culture of
Correct Answer
(A) Galleria mellonella
Explanation
Solution: EPN multiplied on the live culture of Galleria mellonella. Galleria mellonella Infection Model Identifies Both High and Low Lethality of Clostridium perfringens Toxigenic Strains and Their Response to Antimicrobials. Mechanisms of the anaerobe Clostridium perfringens and associated diseases have been frustrated by the lack of reliable infection models.