2009 HL Q14(b) Example of transport in (or out) / example of barrier / produces (b) (i) 14. 2(3) progesterone (ii) Uterine and embryonic 3 Change in hormone levels (or correctly described) / contractions / (iii) 3(3) waters break / cervix dilates / delivery / cord cut / afterbirth (iv) Sperm and egg fuse / outside the body (or described) 2(3) (Solid) ball of cells 3 Morula: (v) Fluid-filled (or hollow) ball of cells 3 Blastocyst: 2010 HL Q15(a) 15. (a) (i) Sperm (cells) and (seminal) fluid 3 (ii) Diagram (testis, 6, 3, 0 sperm duct, urethra, penis) Four parts located and named: Testis 3 Epididymis 3 Sperm duct or prostate gland [allow 3 seminal vesicles] Urethra or sperm duct 3 (iii) Broken voice (or enlarged larynx) / body hair / more muscle / more bone enlargement of testes / enlargement of penis 2(3) Any two (iv) *Testosterone 3 2010 HL Q15(c) (c) (i) (Sucking or pumping) stimulates (pituitary) / production of hormone 15. (or correctly named hormone) / promotes milk flow 2(3) Any two 20012 HL Q14 (b) (i) 1. Ectoderm 14. 3 Mesoderm 3 Endoderm 3# 2. e.g nervous system 3 ectoderm: e.g skeletal system 3 mesoderm: e.g. digestive system 3 endoderm: Embryonic 3 (ii) Uterine or endometrium 3 1. A membrane (or sac) that surrounds the embryo (or foetus) 3 (iii) 2. It contains (or secretes) (amniotic) fluid or protects embryo 3 2013 HL Q13 (a) (i) *Secondary sexual characteristics 3 13. (ii) *Puberty 3 (iii) *Testosterone 3
2009 HL Q14(b) 14. (b) (i) Example of transport in (or out) / example of barrier / produces progesterone 2(3) (ii) Uterine and embryonic 3 (iii) Change in hormone levels (or correctly described) / contractions / waters break / cervix dilates / delivery / cord cut / afterbirth 3(3) (iv) Sperm and egg fuse / outside the body (or described) 2(3) (v) Morula: Blastocyst: (Solid) ball of cells Fluid-filled (or hollow) ball of cells 3 3 2010 HL Q15(a) 15. (a) (i) Sperm (cells) and (seminal) fluid 3 (ii) Diagram (testis, sperm duct, urethra, penis) Four parts located and named: Testis Epididymis Sperm duct or prostate gland [allow seminal vesicles] Urethra or sperm duct 6, 3, 0 3 3 3 3 (iii) Broken voice (or enlarged larynx) / body hair / more muscle / more bone enlargement of testes / enlargement of penis Any two 2(3) (iv) *Testosterone 3 2010 HL Q15(c) 15. (c) (i) (Sucking or pumping) stimulates (pituitary) / production of hormone (or correctly named hormone) / promotes milk flow Any two 2(3) 20012 HL Q14 14. (b) (i) 1. 2. Ectoderm Mesoderm Endoderm ectoderm: e.g nervous system mesoderm: e.g skeletal system endoderm: e.g. digestive system 3 3 3# 3 3 3 (ii) Embryonic Uterine or endometrium 3 3 (iii) 1. 2. A membrane (or sac) that surrounds the embryo (or foetus) It contains (or secretes) (amniotic) fluid or protects embryo 3 3 2013 HL Q13 13. (a) (i) *Secondary sexual characteristics 3 (ii) *Puberty 3 (iii) *Testosterone 3
3.6.2%20HUMAN%20REPRODUCTION.docx