MCQs-Biology-Basics in agricultural biology Welcome to your Basics in agricultural biology 1. Which of the following may not be considered as phenotypic marker? Dwarfness Silent mutation in DNA polymerase Yellow green leaf color Curly leaves None 2. In which crop higher amylose and amylopectin is desirable trait? Pulses Oilseeds Cereals Cotton 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. Silent mutation is Incorporation of chemically different amino acid in a protein Incorporation of chemically same amino acid in a protein Premature protein Structurally different protein None 5. Missense mutation Leads to formation of different protein Leads to addition of chemically different amino acid in a protein Leads to Change in non coding part of the gene Is because of the misfolding of the protein None 6. What is the harvest index? It is the ratio of the grain yield per unit above ground biomass It is the ratio of grain yield and total plant biomass The ratio of plant biomass to the total grain yield It is the maximum yield produced by a cultivar per unit area None 7. Different colours of flower are because of… Anthocyanins Carotenoids Chlorophylls Proteins None of the above I and II None 8. What is the difference between two way cross and three way cross? Two way cross is performed between two pure lines and three way cross is performed between F1 plants and a pure line Two way cross is made between two F1 plants, three way cross is performed between F1 plants and a pure line Three way cross offers more genetic variability as compared to two way cross Both are same I and III None 9. 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 10. Why linolenic acid can not be stored for longer time? Because of the inefficient storage methods Residual impurities affect the quality of the linolenic acid It oxidises rapidly It is highly flammable None 11. Which of the following is true about fatty acids? Fatty acids are present in the cell wall Fatty acid generally contain more than one carboxylic groups Long carbon chain containing acids These are the highly polar acids None 12. 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 13. 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 14. 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 15. Phenotypic markers are? Morphological traits associated with agronomically important trait Any modified phenotype is a phenotypic marker Any mutational change without visible alterations None of the above None Please fill in the comment box below. Time's up
