Correct diagram with four parts labeling ½ x4=2 23 Can withstand high temperature and strong acids and 1 alkalis. Also it cannot be degraded by any enzyme i)S=CAZ 1 ii) Log S= Log C+Z Log A 1 iii) Alexander Van Humboldt ½ 24 iv) 0.1 to 0.2 ½ OR Parasitism ii) mutualism iii) Commensalism ½ x6=3 iv) Mutualism v) Commensalism vi) Competition DDT being toxic gets accumulated in organism and passes ½ to next higher trophic level because it cannot be ½ metabolized or excreted 25 DDT concentrated in higher trophic level, i.e bird 1.5 Disturbs calcium metabolism- > thinning of egg shell- >premature breaking-> decrease in bird population ½ Bio magnification Pathogens that attack insects and other anthropods ½ Genus Nucleopolyhedrovirus used ½ 26 Species specific and do not show negative impact on 1 plants and non- target insects To conserve beneficial insects and kills harmful ones 1 i.)Regeneration of endometrium ii).Uterus gets highly vascularised ready for embryo 27 implantation 1x 3=3 iii) Disintegration of endometrium leading to menstruation Lac operon- ½ x4=2 Regulator gene Promotor gene Operator gene 28 Structural gene Explanation ‘ON’ 1.5 Explanation ‘OFF’ 1.5 OR Colour blindness are X chromosome linked recessive 3+2=5 disorder. Males have only one copy of X chromosome without corresponding alleles in Y chromosomes.
23 Correct diagram with four parts labeling Can withstand high temperature and strong acids and alkalis. Also it cannot be degraded by any enzyme ½ x4=2 1 24 i)S=CAZ ii) Log S= Log C+Z Log A iii) Alexander Van Humboldt iv) 0.1 to 0.2 OR Parasitism ii) mutualism iii) Commensalism iv) Mutualism v) Commensalism vi) Competition 1 1 ½ ½ ½ x6=3 25 DDT being toxic gets accumulated in organism and passes to next higher trophic level because it cannot be metabolized or excreted DDT concentrated in higher trophic level, i.e bird Disturbs calcium metabolism- > thinning of egg shell- >premature breaking-> decrease in bird population Bio magnification ½ ½ 1.5 ½ 26 Pathogens that attack insects and other anthropods Genus Nucleopolyhedrovirus used Species specific and do not show negative impact on plants and non- target insects To conserve beneficial insects and kills harmful ones ½ ½ 1 1 27 i.)Regeneration of endometrium ii).Uterus gets highly vascularised ready for embryo implantation iii) Disintegration of endometrium leading to menstruation 1x 3=3 28 Lac operon- Regulator gene Promotor gene Operator gene Structural gene Explanation ‘ON’ Explanation ‘OFF’ ½ x4=2 1.5 1.5 OR Colour blindness are X chromosome linked recessive disorder. Males have only one copy of X chromosome without corresponding alleles in Y chromosomes. 3+2=5