may reduce risk of breast cancer / bonding / correct nutrients or easier to digest / suitable temperature / delayed ovulation any three sperm: up to 7 days up to2 days ova: (iii) 4+2(3) one valid comment e.g. sperm nourished in female tract or longer survival time means greater chance of fertilisation formation: (placenta) formed from embryonic and uterine 4 tissues (iv) connected to embryo by umbilical cord / (placenta) functions: produces hormones /example of transfer / example of a barrier 2(3) any two 2007 HL Q15(a) 15. Any two of (a), (b) or (c). diagram [penis, 6, 3, 0 urethra, sperm duct, testis] (a) (i) 6(1) labels (ii) X on testis 3 (iii) Y on epididymis 3 growth / development of primary sex characteristics or example / (iv) development of secondary sex characteristics or example / sperm 2(3) production / comment on male behaviour low sperm count low sperm motility hormonal imbalance or or or explained or named chemical or smoking or drug abuse or erectile dysfunction [accept unsuitable temperature (of testes) or cause (v) described] 3 corrective measure matched 3 2009 HL Q14(a) Any two of (a), (b), (c) 14. (30, 30) Diagram 6, 3, 0 Indicate sites of: 14. (a) (i) Meiosis: (Ovary) indicated on diagram 3 Fertilisation: (Fallopian) tube indicated on diagram 3 Implantation: (Uterus) indicated on diagram 3 repairs endometrium / inhibits FSH / stimulates LH Oestrogen: OR (ii) 2(3) thickening (or maintenance of) endometrium / inhibits Progesterone: FSH / inhibits LH production Named menstrual disorder: 3 (iii) 1. Cause 3 2. Treatment 3
may reduce risk of breast cancer / bonding / correct nutrients or easier to digest / suitable temperature / delayed ovulation any three (iii) sperm: up to 7 days ova: up to2 days one valid comment e.g. sperm nourished in female tract or longer survival time means greater chance of fertilisation 4+2(3) (iv) formation: (placenta) formed from embryonic and uterine tissues functions: connected to embryo by umbilical cord / (placenta) produces hormones /example of transfer / example of a barrier any two 4 2(3) 2007 HL Q15(a) 15. Any two of (a), (b) or (c). (a) (i) diagram [penis, urethra, sperm duct, testis] labels 6, 3, 0 6(1) (ii) X on testis 3 (iii) Y on epididymis 3 (iv) growth / development of primary sex characteristics or example / development of secondary sex characteristics or example / sperm production / comment on male behaviour 2(3) (v) low sperm count or low sperm motility or hormonal imbalance or explained or named chemical or smoking or drug abuse or erectile dysfunction [accept unsuitable temperature (of testes) or cause described] corrective measure matched 3 3 2009 HL Q14(a) 14. Any two of (a), (b), (c) (30, 30) 14. (a) (i) Diagram Indicate sites of: Meiosis: Fertilisation: Implantation: (Ovary) indicated on diagram (Fallopian) tube indicated on diagram (Uterus) indicated on diagram 6, 3, 0 3 3 3 (ii) Oestrogen: repairs endometrium / inhibits FSH / stimulates LH OR Progesterone: thickening (or maintenance of) endometrium / inhibits FSH / inhibits LH production 2(3) (iii) Named menstrual disorder: 1. Cause 2. Treatment 3 3 3