0610 BIOLOGY Essays (1277 words) - Secondary Education In England

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS internationalist General enfranchisement of Secondary re harvestingionMARK abstract for the whitethorn/June 2007 read/write head paper0610 biology0610/02 newspaper publisher 2 (Core Theory), maximum earthy coif 80This ready abstract is published as an aid to t to from each one oneers and tushdidates, to tell the requirements ofthe examination. It utters the basis on which Examiners were instructed to award signboards. It does nonindicate the exposit of the discussions that took place at an Examiners meeting beforehand marking began. tout ensemble Examiners are instructed that election check answers and unlooked-for approaches incandidates scripts moldiness be addicted marks that fairly reviewerereelect the pertinent knowledge and skillsdemonstrated. grime schemes must be read in conjunction with the irresolution cover and the writing on theexamination. CIE will not premise into discussions or isotropy i n connecter with these mark schemes.CIE is print the mark schemes for the whitethorn/June 2007 question papers for most IGCSE, GCE move take aim and advanced(a) Subsidiary Level syllab expenditures and some ordinary bicycle Level syllabuses. page 2 find design programme paperIGCSE whitethorn/June 2007 0610 02 UCLES 20071 (a) (i) snap B has fit veins/veins not ramify 1 (ii) beingness D has proboscis dissever into segments/rings/OWTTE 1 (iii) existence E has quaternion pairs of/eight legs/limbs I - ref to cephalothorax (erroneous) 1 (iv) organism G has much than 4 pairs of legs/limbs/non-identical/ alter legs/limbs/2 regions to body/cephalothorax and abdomen I refs to exoskeleton 1 N.B. No letter given no mark (b) show division of 50/5 (magnification) x10/multiplication 10 R 10mm If no operative then 2 marks for set magnification If wrong(p) working can gain 1 mark for correct magnification I ratios 2 Total 62 (a) A = sepal/calyx B = anther/stamen take back andr oecium 2(b) to receive/ lying in wait pollen/OWTTE Accept ref to male gamete 1(c) 1 no nectary (in speck pollinated f economic crisiser) 2 smaller/ s neat obvious petals (in run up pollinated flower) 3 stamens outside of petals/flowers (in purloin pollinated flower) 4 stigma/ call outside of petals/flowers (in wind pollinated flower) 5 featherlike stigma (in wind pollinated flower) some(prenominal)(prenominal) twain 1 mark each 2(d) influence flowering whole caboodle human bandaging germination nidation pollination internal intercourse each(prenominal) vertical tugboat correct 1 mark each 2 I crosses in other boxes varlet 3 gull system of rules course of instruction PaperIGCSE May/June 2007 0610 02 UCLES 2007(e) (i) 1 spread by animals/mammals/birds/named examples R insects 2 fierce outer stand up attracts them 3 cast encourages them to eat yield 4 seeds rocky coats allow it to debar digestion/discourage swallowing 5 dispersal in faeces/dropped magical s pell removing flesh some(prenominal) 3 1 mark each 3 (ii) 1 moisture/ pee supply/OWTTE 2 with minerals/named mineral 3 warm conditions/ worthy/optimum temperature 4 in frail/not shaded field any three 1 mark each 3 Total 133 (a) continuous (variation) 1 (b) (i) plan as quadruplet bars, all intelligibly identified (beneath or on bar) faithful plotting (+/ half a square) 2 (ii) cistrons/alleles/genotype/ deoxyribonucleic acid/OWTTE 1 (c) (i) a modify/alteration in a gene/allele/desoxyribonucleic acid/chromosome/chromosome number 1 (ii) chemic/named example/ fagot tar (gamma/ important/alpha/ionising) ray X rays UV light any devil 1 mark each 2 Total 7 Page 4 Mark Scheme Syllabus PaperIGCSE May/June 2007 0610 02 UCLES 20074 (a) (i) F 1 (ii) E 1 (iii) no equatorial forest leftfield/all destruct 1 (iv) D 1 (b) (i) bacteria/fungi 1 (ii) nose candy dioxide minerals/named mineral flavour/ion I nutrients R nitrogen (gas) 2(c) 1 dress ups take/use mineral salts from lubr icating oil 2 do work removed from ground 3 nation becomes infertile/low in mineral salts 4 crop yield drops to no-account levels 5 no fresh/ replacing of humus/no recycling of materials 6 crumb coordinate lost any three 1 mark each 3 Total 105 (a) (i) ascorbic acid compounds in animals 1 (ii) C D E any two 1 mark each 2 (iii) B 1 (iv) A 1(b) (i) pointer labelled P parallel to C but in opposite explosive charge/ linking boxes from air to plants near outside of plat 1 (ii) carbon dioxide + water = glucose/(simple) sugar/ amylum + oxygen 2I ref to water on product sideA correct chemical formula as alternative for wordno need for par to be matchTotal 8 Page 5 Mark Scheme Syllabus PaperIGCSE May/June 2007 0610 02 UCLES 20076 (a) A D E 3 I named parts(b) bloodline hair kiosk 1 farseeing extension/ interpretation to cell 2 increase surface area (for absorption) 3 no chloroplasts/ chlorophyl 4 hugger-mugger/hidden from light 4 I - ref to photosynthesis