1 / 4

download CBSE Biology Solved Board Paper

Students Can also check the solved 2017 Biology board papers for both region Delhi and ALL INDIA<br>https://www.zigya.com/blog/click-here-to-download-cbse-biology-2017-solved-board-paper/

php1deldev
Download Presentation

download CBSE Biology Solved Board Paper

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CBSE Biology 2017 Board Questions www.zigya.com

  2. Biology CBSE2017 Exam Year 2017 Study,Assignments,SolvedPreviousYearPapers.QuestionsandAnswers.FreeForever. Short AnswerType Namethetypeofcrossthatwouldhelptofindthegenotypeofapeaplantbearingvioletflowers. Answer StatetwopostulatesofOparinandHaldanewithreferencetooriginoflife. Answer A herd of cattle is showing reduced fertility and productivity. Provide one reason and one suggestion to overcome thisproblem. Answer WhatareCrygenes?Inwhichorganismaretheypresent? Answer An electrostatic precipitator in a thermal power plant is not able to generate high voltage of several thousands.Writetheecologicalimplicationbecauseofit. Answer A pollen grain in angiosperm at the time of dehiscence from an anther could be 2-celled or 3-celled. Explain.Howarethecellsplacedwithinthepollengrainwhenshedata2-celledstage? Answer Differentiate between the genetic codes given below : (a) Unambiguous and Universal (b) Degenerate and Initiator Answer Mentiononeapplicationforeachofthefollowing:(a)Passiveimmunization(b)Antihistamine(c)Colostrum (d)Cytokinin-barrier Answer Namethemicrobesthathelpproductionofthefollowingproductscommercially:(a)Statin(b)Citricacid (c) Penicillin (d) Butyricacid Answer ListfourbenefitstohumanlifebyeliminatingtheuseofCFCs. Answer (a)CanaplantfloweringinMumbaibepollinatedbypollengrainsofthesamespeciesgrowinginNew Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Join www.zigya.com

  3. Biology CBSE2017 Exam Year 2017 Study,Assignments,SolvedPreviousYearPapers.QuestionsandAnswers.FreeForever. • Delhi ? Provide explanations to youranswer. • Answer • Both Haemophilia and Thalassemia are blood related disorders in humans. Write their causes and the differencebetweenthetwo.Namethecategoryofgeneticdisordertheybothcomeunder. • Answer • (a) List the two methodologies which were involved in human genome project. Mention how they were used. • Expand‘YAC’andmentionwhatwasitusedfor. • Answer • Write the characteristics ofRamapithecus, Dryopithecus and Neanderthal man. • Answer • Name a human disease, its causal organism, symptoms (any three) and vector, spread by intake of water and food contaminated by human faecalmatter. • Answer • (a) Write the desirable characters a farmer looks for in his sugarcane crop. (b) How did plant breeding techniqueshelpnorthIndianfarmerstodevelopcanewithdesiredcharacters? • Answer • Secondary treatment of the sewage is also called Biological treatment. Justify this statement and explain theprocess • Answer • (a)ExplainthesignificanceofpalindromicnucleotidesequenceintheformationofrecombinantDNA. • Writetheuseofrestrictionendonucleaseintheaboveprocess. • Answer • Describetherolesofheat,primersandthebacteriumThermusaquaticusintheprocessofPCR. • Answer • Explainthevariousstepsinvolvedintheproductionofartificialinsulin. • Answer • (a)‘‘Organismsmaybeconformersorregulators.’’Explainthisstatementandgiveoneexampleofeach. • Whyaretheremoreconformersthanregulatorsintheanimalworld? Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Join www.zigya.com

  4. Biology CBSE2017 Exam Year 2017 Study,Assignments,SolvedPreviousYearPapers.QuestionsandAnswers.FreeForever. • Answer • Describetheinter-relationshipbetweenproductivity,grossprimaryproductivityandnetproductivity. • Answer • Long AnswerType • It is commonly observed that parents feel embarrassed to discuss freely with their adolescent children about sexuality and reproduction. The result of this parental inhibition is that the children go astray sometimes. • Explain the reasons that you feel are behind such embarrassment amongst some parents to freely discusssuchissueswiththeirgrowingchildren. • By taking one example of a local plant and animal, how would you help these parents to overcome such inhibitions about reproduction and sexuality? • Answer • (a) When a seed of an orange is squeezed, many embryos, instead of one are observed. Explain how it is possible. • (b)Aretheseembryosgeneticallysimilarordifferent?Comment. • Answer • (a)Compare,givingreasons,theJ-shapedandS-shapedmodelsofpopulationgrowthofaspecies. • (b) Explain ‘fitness of a species’’ as mentionedby Darwin. • Answer • Writethedifferentcomponentsofalac-operoninE.coli.Explainitsexpressionwhileinan’open’state. • Answer Like. Share. Bookmark. Download. Make Notes. Print - Your Favourite Questions. Join www.zigya.com

More Related