Agricultural Entomology - Study Mode

[#436] Yellow mosaic virus disease of moong spreads by
Correct Answer

(A) Bemisia tabaci

Explanation

Solution: Yellow mosaic virus disease of moong spreads by Bemisia tabaci. Mungbean yellow mosaic virus (MYMV) is a plant pathogenic virus of the family Geminiviridae . It is a major exotic disease of mungbeans causing leaf discoloration and yield losses. Yellow mosaic disease of many legumes is often transmitted by silverfly ( Bemisia tabaci ). It is characterized by a bright yellow mosaic on the leaves of infected plants and causes significant losses to mungbean.

[#437] Commercially granulosis virus (GV) used for the control of
Correct Answer

(C) Chilo infuseatellus

Explanation

Solution: Commercially granulosis virus (GV) is used for the control of Chilo infuseatellus. Granuloviruses (GVs) are rod-shaped, double-stranded DNA viruses of the family Baculoviridae which infect a wide range of Lepidoptera and a few Hymenoptera. These viruses cause a highly infectious disease in the larvae of susceptible species. Granulosis virus is commonly utilized as a carrier for insecticides, in an attempt to reduce potato tuber moth Phthorimaea operculella (Zeller) (PTM) damage at harvest.

[#438] "Knock out" is a commercial transgenic hybrid of
Correct Answer

(C) Soybean

Explanation

Solution: "Knock out" is a commercial transgenic hybrid of Soybean. In plants, such targeted DSBs can be used to knock out genes, modify gene expression by disrupting promoter sequences, or insert transgenes at a specific location via homologous recombination. The first test of the CRISPR system in soybean was with a GFP (Green Fluorescent Protein)-expressing soybean line, as GFP knock-outs are easily observed by a loss of fluorescence. The CRISPR/Cas9 system is shown to be effective in soybean by knocking-out a green fluorescent protein (GFP) transgene and modifying nine endogenous loci.

[#439] In Cyclorrhapan Diptera accessory pulsating organs are present in
Correct Answer

(A) Scutellum

Explanation

Solution: In Cyclorrhapan Diptera accessory pulsating organs are present in Scutellum. Cyclorrhapha is an unranked taxon within the infraorder Muscomorpha. They are called "Cyclorrhapha" ('circular-seamed flies') concerning the circular aperture through which the adult escapes the puparium. In addition to the dorsal vessel ("heart"), insects have accessory pulsatile organs ("auxiliary hearts") that supply body appendages with hemolymph. They are indispensable in the open circulatory system for hemolymph exchange in antennae, long mouthparts, legs, wings, and abdominal appendages.

[#440] Work on GM mustard is carried out by
Correct Answer

(D) Proagro

Explanation

Solution: Work on GM mustard is carried out by Proagro. GM mustard contains two alien genes ('barnase' and 'barstar') isolated from a soil bacterium called Bacillus amyloliquefaciens that enable breeding of high-yielding commercial mustard hybrids. Pro-Agro has developed this genetically modified mustard that resists glufosinate, it's brand of herbicide.