Description : Environmental factors which increases the allelopathic effects are a).low soil fertility b). Warm wet condition c). Cold wet conditions d). a and b
Last Answer : d). a and b
Description : Glufosinate (pat) resistant trait for maize crop first sale in which year ? a).2000 b).1992 c).1995 d).1997
Last Answer : d).1997
Description : Glyphosate (Cp4 epsps) resistant trait for sugarbeet crop first sale in which year ? a).1998 b).1986 c).2007 d).2003
Last Answer : c).2007
Description : Gluphosate + Glufosinate (Double Stack) is resistant trait of which crop a).Canola b). Sugarbeet c). Soybean d).Maize
Last Answer : d).Maize
Description : Glufosinate (Bar) is resistant trait of which crop a).Soybean b).Sugarbeet c).Maize d).Cotton
Last Answer : d).Cotton
Description : Bromoxynil (Bxn) is resistant trait of which crop a).Soybean b).Sugarbeet c).Maize d).Cotton
Description : Allelochemicals are mostly present in which of the following plant parts a). Flowers and fruits b). Leaves and stems c). Roots d). All
Last Answer : d). All
Description : Two or more species coexist in a place due to the reason a). Different nutritional requirement b). Different causes of mortality c). Different time demand for growth factors d). All
Description : Transgenic herbicide resistant crops were developed using a).Conventional breeding b).Genetic engenering c).None d).Both
Last Answer : d).Both
Description : Non transgenic herbicide resistant crops were developed using a).Conventional breeding b).Genetic engineering c).None of the above d).Both
Last Answer : a).Conventional breeding
Description : Tolerance of the rice plants to molinate is due to a).Reverse metabolism b). Protoplasmic resistance c). Conjugation d). Slow translocation
Last Answer : b). Protoplasmic resistance
Description : Factors affecting weed-crop interference are a). Period of weed growth b). Soil and climate influence c). Plant species effects d). All
Description : India’s wheat yield revolution in the 1960s was possible primarily due to (a) hybrid seeds (b) increased chlorophyll content (c) mutations resulting in plant height reduction (d) quantitative trait mutations.
Last Answer : (d) quantitative trait mutations.
Description : How might genetic and biological risk factors (nature) be exacerbated or mitigated by environmental influences (nurture) particularly for life-long offenders?
Last Answer : What is the answer ?
Description : A period in the ontogeny of crop at which maximum crop weed competition occurs is called a). Economic threshold b). Gain threshold c). Competitive threshold d). None
Last Answer : d). None
Description : The period at which maximum crop weed competition occurs is a). Critical period b). Dormancy c). Flaming d).Threshold
Last Answer : a). Critical period
Description : factors to consider in improving the effectiveness of herbicides application a). Increasing management diversity b). application timing c). inherent efficacy of herbicide d). All
Description : The most common mechanism of herbicide resistance is a). Enhanced metabolism b). Altered target site c). Sequestration d). All
Last Answer : b). Altered target site
Description : Besides isoproturon resistance in P. minor, other cases of herbicide resis tance reported in India are a). Poa annua b). Brachiaria ramosa c). Commelina sp d). None of the above
Last Answer : d). None of the above
Description : Herbicide Resistance can be managed through a). Stop to Use of herbicides with the same mechanism of action b). Use proactive weed control c). Use of post emergence herbicides with at least one mechanism of action d). All of the above
Last Answer : d). All of the above
Description : Multiple resistance is the phenomenon in which a weed is resistant to two or more herbicides having a). same mechanisms of action b). different mechanisms of action c). same chemistry d). different chemistry
Last Answer : b). different mechanisms of action
Description : Phalaris minor has developed resistance to isoproturon in Punjab and Haryana in a). Rice b). Wheat c). Sugarcane d). Cotton
Last Answer : b). Wheat
Description : A selectivity achieved due to manipulation of time of application is called a).Biochemical b). Chronological c). Chemical d). Physical
Last Answer : b). Chronological
Description : Selectivity achieved due to changes in functional group is called a). Physical b). Biological c). Chemical d). Chronological
Last Answer : d). Chronological
Description : Growth of the weed is reduced due to root exudates of maize a). Chenopodium album b). Amaranthus retroflexus c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : Which weed induces asthama in humans due to pollen spread? a). Ambrosia artemissifolia b). Franseria sp c). Both a and b d). None of these
Description : There is a greater risk of damage of herbicide in protected environments due to a). absorption b). leaching c). runoff d). volatilization
Last Answer : d). volatilization
Description : Montmorillonite clays adsorb more herbicide as compared to other clays due to a). Expanding lattices b). more surface area c). More negatively charged sites d). All
Description : Percent reduction in yield in case of onion due to weeds is a). 20-30 b). 30-35 c). 60-70 d).15-20
Last Answer : c). 60-70
Description : Percent reduction in grain yield of transplanted rice due to weeds is a). 20-40 b).10-30 c).15-20 d).15-45
Last Answer : d).15-45
Description : Symptoms where shoots/leaves are bleached white are caused due to a). Atrazine b). Glufosinate c). Tembotrione d). Fluazifop-p-butyl
Last Answer : c). Tembotrione
Description : A true breeding plant is (a) one that is able to breed on its own (b) produced due to cross-pollination among unrelated plants (c) near homozygous and produces offspring of its own kind (d) always homozygous recessive in its genetic constitution.
Last Answer : c) near homozygous and produces offspring of its own kind
Description : One trait a plant can have is either red leaves (R) or brown leaves (r). Another trait is tall stems (T) or short stems (t). A plant used in a dihybrid cross has the genotype RRTt. what is the phenotype of this plant?
Last Answer : red leaves, tall stems
Description : Do you have some genetic trait that has made your body different from some? If so, what is it?
Last Answer : For most of my life my fingernails were so strong I could use them as screwdrivers.
Description : What is a section of DNA molecule that carries the genetic code for a particular trait?
Last Answer : Need answer
Description : What an offspring that was given different genetic information for a trait from each parent?
Last Answer : hybrid
Description : Select the incorrect statement from the following. (a) Galactosemia is an inborn error of metabolism. (b) Small population size results in random genetic drift in a population. (c) Baldness is a sex-limited trait. (d) Linkage is an exception to the principle of independent assortment in heredity
Last Answer : (c) Baldness is a sex-limited trait.
Description : Which one is the incorrect statement with regard to the importance of pedigree analysis? (a) It confirms that DNA is the carrier of genetic information. (b) It helps to understand whether the trait in ... linked to one of the autosome. (d) It helps to trace the inheritance of a specific trait.
Last Answer : (a) It confirms that DNA is the carrier of genetic information.
Description : The physical appearance and properties of an organism which is the expression of the genetic makeup is called the: a) phenotype b) pangenesis c) parental trait d) genotype
Last Answer : ANSWER: A -- PHENOTYPE
Description : The ecological phenomenon of plant-plant interference a). Competition b). Allelopathy c). Both d). None
Last Answer : c). Both
Description : Prohexadione calcium a plant growth regu lator affect efficacy of which of the following herbicides in peanut a). acifluorfen b). bentazon c). imazethapyr d). None
Description : Typically pre-plant soil incorporated herbi cide a). Fluchloralin b). Trifluralin c). EPTC d). All of these
Last Answer : d). All of these
Description : Important quality of bioagents a). Attack only host plant b). Free from predators/parasites and quick adoption to new environment c). Able to kill reproductive parts of weed d). All of these
Description : Which of the following is a monocot weed but broad-leaved plant? a). Eichhornia crasipus b). Commelina banghalensis c). Cynnotis axillaris d). All of these
Description : In which weed seeds mature after uproot ing the plant? a). Stellaria media (Chick weed) b). Portulaca oleracea c). Both a and b d). None of these
Description : A weed producing > 1 lakh seeds/plant a). Amaranthus sp b). Portulaca sp c). Both a and b d). Cascutta sp
Description : A widely used pre-plant herbicide in con servation agricultural systems a). Pendimethalin b). Trifluralin c). Glyphosate d). Fluchloralin
Last Answer : c). Glyphosate
Description : Weed Biology and Management Q.313. Weed Science of America is publish ing which of the Journals a). Weed Science b). Weed Technology c). Invasive Plant Science and Manage ment d). All the above
Last Answer : d). All the above
Description : .Which indicator plant is used in germi nation test of bioassay? a). Cucumber b). Sorghum c). Oat d). All
Description : .Which crop is an indicator plant for the bio assay of Triazines and Aliphatics? a). Sugarbeet b). Sorghum c). Cotton d). Mustard
Last Answer : a). Sugarbeet