MCQs-Biology-Basics in agricultural biology Welcome to your Basics in agricultural biology 1. What is genetic recombination? Broken DNA after repair sometimes generate newer genetic combinations Homologous chromosome cross over that leads to new genetic combination Non homologous end joining repair mechanism also leads to the genetic recombinations All of the above None 2. Which of the following best describes the reason behind little genetic studies on roots? Roots does not perform essential role in the crop yield Root traits are difficult to breed Roots are located underground limiting its accessibility in order to study the genetic behaviour Roots are genetically not diverse None 3. Which of the following is not the essential trait in oil crop improvement? Seed yield Total oil content Early maturity None of the above None 4. Which of the following may not be considered as phenotypic marker? Dwarfness Silent mutation in DNA polymerase Yellow green leaf color Curly leaves None 5. Which of the following category of plants have more evolutionary advantage? Cross pollinating plants, because it helps in creating newer genetic variability Self pollinating plants, because the genome stays uncontaminated with the foreign DNA Vegetatively propagating plants Plants with longer lifespan None 6. Objective of mutation breeding is To change the genomic DNA Increase the ROS levels in the cells To induce point mutation without affecting any other characters To accelerate the process of genomic rearrangements None 7. Which of the following is not the essential trait oil crop improvement? Seed yield Total oil content Early maturity Amino acid content None 8. What is the unit of yield? Kg Kg/ha Kgha Kg/annum None 9. Different colours of flower are because of… Anthocyanins Carotenoids Chlorophylls Proteins None of the above I and II None 10. In which crop higher amylose and amylopectin is desirable trait? Pulses Oilseeds Cereals Cotton None 11. The full form of the TILLING is Transcriptional initiation lipid layering and integration Topology illustrating infographics Targeting induced local lesion in genome None of the above. None 12. Which of the following is not a physical mutagen Gamma rays X-rays Electron beam Ethyl methane sultanate None 13. Which of the following is true about the male sterility Male sterile plants never produce any gamete Plant produce infertile male gametes Plants lack female gametes Male and female gametes are infertile None 14. In cross breeding which of the following increase the probability of obtaining targeted phenotype? Using genetically different parents Crossing between two F1 plants Large F2 population Intragenic crossing None 15. What is IPM Integrated pest mantainance Integrated pest management Innovative plant mutagenesis None of the above None Please fill in the comment box below. Time's up
