Sexual reproduction in humans — Paper 2 · IGCSE Science - Combined 0653

11 Materials are exchanged between a mother and her fetus across the placenta. Which row shows the overall direction of movement of these materials? mother to fetus fetus to mother A amino acids glucose B amino acids urea C carbon dioxide glucose D carbon dioxide urea

1 marks

Answer: B

This question in 0653/21 May/June 2017

10 Which substance is at a higher concentration in the blood on the fetal side of the placenta than in the blood on the mother’s side of the placenta? A amino acids B carbon dioxide C glucose D oxygen

1 marks

Answer: B

This question in 0653/22 May/June 2017

11 During pregnancy, the fetus is contained within the amniotic sac. The amniotic sac contains amniotic fluid. What is the function of the amniotic fluid? A It protects the fetus against knocks and bumps. B It provides the fetus with oxygen and nutrients. C It removes the fetal waste products. D It supplies the fetus with blood.

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2017

11 During pregnancy, the fetus is contained within the amniotic sac. The amniotic sac contains amniotic fluid. What is the function of the amniotic fluid? A It protects the fetus against knocks and bumps. B It provides the fetus with oxygen and nutrients. C It removes the fetal waste products. D It supplies the fetus with blood.

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2017

11 During pregnancy, the fetus is contained within the amniotic sac. The amniotic sac contains amniotic fluid. What is the function of the amniotic fluid? A It protects the fetus against knocks and bumps. B It provides the fetus with oxygen and nutrients. C It removes the fetal waste products. D It supplies the fetus with blood.

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2017

11 How do male gametes compare with female gametes? . move size independently A larger v B larger x Cc smaller v D smaller x

1 marks

Answer: C

This question in 0653/22 Feb/March 2018

11 The diagrams show the human male and female reproductive systems. 3 2 4 1 Which numbered parts produce gametes? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: B

This question in 0653/21 May/June 2018

12 What is a disadvantage of breast-feeding compared with bottle-feeding using formula milk? A difficult to measure the amount of milk given B milk contains antibodies C milk is always immediately available D milk is at the optimum temperature

1 marks

Answer: A

This question in 0653/23 May/June 2018

11 What is the function of the amniotic sac? A It surrounds the fetus in the uterus and contains amniotic fluid. B It surrounds the fetus in the uterus and provides essential nutrients for the fetus. C It surrounds the fetus in the vagina and contains amniotic fluid. D It surrounds the fetus in the vagina and provides essential nutrients for the fetus.

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2018

11 Which row describes the net diffusion of substances between the fetus and the mother across the placenta? from fetus to mother from mother to fetus A carbon dioxide and glucose oxygen and amino acids B carbon dioxide and waste products oxygen and glucose C oxygen and glucose carbon dioxide and amino acid D oxygen and waste products carbon dioxide and glucose

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2018

11 During pregnancy in humans, gas exchange occurs between a mother and her fetus. Where does this gas exchange occur? A amniotic fluid B amniotic sac C placenta D umbilical cord

1 marks

Answer: C

This question in 0653/23 Oct/Nov 2018

9 Which row is correct for sexual reproduction? genetically different one zygote offspring produced parent produced A v Jv x B J x J Cc x v x D x x J

1 marks

Answer: B

This question in 0653/22 Feb/March 2019

10 Four students are comparing the human male and female gametes. Which student has the correct comparison? size movement number A egg bigger sperm mobile usually one egg B sperm bigger sperm not mobile many eggs C egg bigger sperm not mobile one sperm D sperm bigger sperm mobile many sperm

1 marks

Answer: A

This question in 0653/22 Feb/March 2019

10 What are the features of sexual reproduction? fusion nature of offspring of nuclei A no genetically dissimilar B yes genetically identical C no genetically identical D yes genetically dissimilar

1 marks

Answer: D

This question in 0653/21 May/June 2019

7 The diagram shows the female reproductive system. X Y Z What are the functions of the parts labelled X, Y, and Z? X Y Z A development release of ring of muscle at of fetus female gametes opening of uterus B development site of receives penis of fetus fertilisation during intercourse C receives penis release of ring of muscle at during intercourse female gametes opening of uterus D receives penis site of development during intercourse fertilisation of fetus

1 marks

Answer: B

This question in 0653/22 May/June 2019

12 Which row shows the substances that diffuse from the mother to the fetus at the placenta? career nutrients oxygen oroduts A v x v x B v v x v Cc x v v x D x x v v

1 marks

Answer: C

This question in 0653/22 May/June 2019

10 What are the features of sexual reproduction? fusion nature of offspring of nuclei A no genetically dissimilar B yes genetically identical C no genetically identical D yes genetically dissimilar

1 marks

Answer: D

This question in 0653/23 May/June 2019

12 The diagram shows part of a placenta. vein artery mothers blood placenta membrane barrier umbilical vein umbilical artery Why do nutrients in the mother’s blood enter the blood in the umbilical vein? A A net movement of nutrient particles occurs from a region of high concentration to a lower concentration. B Nutrients move from a region of higher water potential to a region of lower water potential. C Pressure in the maternal blood forces nutrients into the umbilical vein. D The nutrients travel into the umbilical vein, across a partially permeable membrane by osmosis.

1 marks

Answer: A

This question in 0653/23 May/June 2019

10 Which statement about sexual reproduction is always correct? A It involves only one parent. B It involves the fusion of nuclei. C It produces genetically identical offspring. D It takes place only in animals.

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2019

12 The following are adaptive features of some gametes. 1 a flagellum 2 a jelly coat 3 a sac of enzymes at one end 4 a store of energy Which are features of a human male gamete? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2019

2 Which statement about human gametes is correct? A Egg cells are much smaller than sperm cells. B Egg cells are produced in larger numbers than sperm cells. C Egg cells have a jelly coating that changes after fertilisation. D The flagellum is an adaptive feature of an egg cell.

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2019

11 A developing fetus is connected to its mother by an umbilical cord and placenta. What is the function of the placenta? A to allow the mixing of the mother’s blood with the blood of the fetus B to exchange nutrients and waste C to keep the fetus warm D to stop the fetus from moving

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2019

9 Which statement about sexual reproduction is always correct? A It involves only one parent. B It involves the fusion of nuclei. C It produces genetically identical offspring. D It takes place only in animals.

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2019

11 Which statement about human gametes is correct? A Sperm cells are much larger than egg cells. B Sperm cells are produced in smaller numbers than egg cells. C Sperm cells have a jelly coating that changes after fertilisation. D The flagellum is an adaptive feature of a sperm cell.

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2019

12 What gives the human embryo protection from mechanical shock? A amniotic fluid B amniotic sac C placenta D umbilical cord

1 marks

Answer: A

This question in 0653/22 Feb/March 2020

11 Which part of the male reproductive system in humans produces sperm? A penis B scrotum C testes D urethra

1 marks

Answer: C

This question in 0653/21 May/June 2020

12 Which row contains correct adaptive features for both sperm and egg cells? sperm egg A energy store presence of enzymes B flagellum jelly coat C jelly coat energy store D presence of enzymes flagellum

1 marks

Answer: B

This question in 0653/22 May/June 2020

12 The diagram shows a placenta and umbilical cord. X key umbilical artery X movement of oxygen from fetus to fetus X mother’s umbilical blood vein X Which row is correct? high oxygen low oxygen name of concentration concentration process X present present A umbilical artery umbilical vein diffusion B umbilical artery umbilical vein osmosis C umbilical vein umbilical artery diffusion D umbilical vein umbilical artery osmosis

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2020

8 The following are features of human gametes. 1 have a jelly coat 2 have energy stores 3 have flagella 4 motile 5 produced in large numbers What are features of human male gametes? A 1 and 2 only B 1, 2 and 4 C 2, 3 and 5 D 3, 4 and 5

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2020

11 The diagram shows a fetus in the uterus. Which letter identifies the umbilical cord? D A C B

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2020

12 The diagram shows a male gamete and a female gamete. Which label is correct? A B D central vacuole jelly coat nucleus containing C chromosomes from mother food store

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2020

12 Materials are exchanged between a mother and her fetus across the placenta. Which row shows the overall direction of movement of these materials? mother to fetus fetus to mother A amino acids glucose B amino acids urea C carbon dioxide glucose D carbon dioxide urea

1 marks

Answer: B

This question in 0653/22 Feb/March 2021

11 Materials are exchanged between the blood of the mother and embryo in the placenta. lining of maternal uterus blood placenta capillary network in placenta 1 2 embryo Which row shows the blood vessels with higher concentrations of carbon dioxide and glucose? higher concentration higher concentration of carbon dioxide of glucose A 1 1 B 2 2 C 2 1 D 1 2

1 marks

Answer: D

This question in 0653/21 May/June 2021

11 The diagram shows the human female reproductive system. Where does fertilisation usually take place? D C A B

1 marks

Answer: D

This question in 0653/22 May/June 2021

10 During human reproduction an egg fuses with a sperm. Sometimes the zygote splits into two and produces twins. Which row describes the formation of these twins? original zygote produced by twins A asexual reproduction genetically identical B sexual reproduction genetically identical C asexual reproduction genetically different D sexual reproduction genetically different

1 marks

Answer: B

This question in 0653/23 May/June 2021

11 The diagram represents the human placenta. P blood of blood of fetus Q mother placenta P and Q show the net movement of substances. Which row identifies substances that travel in the directions of P and Q? in direction P in direction Q A blood urea B oxygen carbon dioxide C excretory products glucose D amino acids toxins

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2021

10 Which row is correct for sexual reproduction? gametes are offspring genetically formed identical to parents A no no B yes no C no yes D yes yes

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2021

11 Which row correctly describes features of human egg cells and sperm cells? egg cells sperm cells A energy stores present enzymes present B enzymes present energy stores present C produced in large numbers flagellum present D flagellum present produced in large numbers

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2021

11 Which comparison between human female and male gametes is correct? eggs sperm A have a flagellum have no flagellum B move a short distance move a long distance C produced in greater numbers produced in fewer numbers D smaller size larger size

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2021

11 During pregnancy, what protects the embryo against toxins? A amniotic fluid B amniotic sac C placenta D umbilical cord

1 marks

Answer: C

This question in 0653/22 Feb/March 2022

11 During sexual intercourse the penis transfers sperm cells to the vagina. What is the pathway for sperm cells from their site of production to the vagina? A sperm ducts  testes  urethra  vagina B testes  sperm ducts  urethra  vagina C testes  urethra  sperm ducts  vagina D urethra  testes  sperm ducts  vagina

1 marks

Answer: B

This question in 0653/21 May/June 2022

12 During sexual intercourse the penis transfers sperm cells to the vagina. What is the pathway for sperm cells from their site of production to the vagina? A sperm ducts  testes  urethra  vagina B testes  sperm ducts  urethra  vagina C testes  urethra  sperm ducts  vagina D urethra  testes  sperm ducts  vagina

1 marks

Answer: B

This question in 0653/22 May/June 2022

12 During sexual intercourse the penis transfers sperm cells to the vagina. What is the pathway for sperm cells from their site of production to the vagina? A sperm ducts  testes  urethra  vagina B testes  sperm ducts  urethra  vagina C testes  urethra  sperm ducts  vagina D urethra  testes  sperm ducts  vagina

1 marks

Answer: B

This question in 0653/23 May/June 2022

13 What is the function of amniotic fluid? A to cushion the fetus B to remove carbon dioxide C to supply nutrients D to supply oxygen

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2022

11 What are two features of sexual reproduction? feature 1 feature 2 A fusion of two identical nuclei requires two different parents B fusion of two zygotes offspring are genetically identical C offspring are genetically different fusion of two different nuclei D only requires a single parent development from a single zygote

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2022

12 Which row is correct for the female gamete? released in can move large numbers by itself WA J 0 0O WwW D> v x x v x x

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2022

11 Where does fertilisation take place? A B C D

1 marks

Answer: A

This question in 0653/22 Feb/March 2023

10 What are features of sexual reproduction? fusion nature of offspring of nuclei A no genetically different B yes genetically identical C no genetically identical D yes genetically different

1 marks

Answer: D

This question in 0653/21 May/June 2023

11. Which row shows the correct information about a human female gamete? v x v v x v x x

1 marks

Answer: A

This question in 0653/23 May/June 2023

11 Which row is correct for sexual reproduction? genetically different one zygote offspring produced parent produced

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2023

11 Which row correctly describes features of human egg cells and sperm cells? egg cells sperm cells A energy stores present enzymes present B enzymes present energy stores present C produced in large numbers flagellum present D flagellum present produced in large numbers

1 marks

Answer: A

This question in 0653/22 Feb/March 2024

10 Which statement about sexual reproduction is always correct? A It involves only one parent. B It involves the fusion of nuclei. C It produces genetically identical offspring. D It takes place only in animals.

1 marks

Answer: B

This question in 0653/21 May/June 2024

12 The list shows the adaptive features of some gametes. 1 a flagellum 2 a jelly coat 3 a sac of enzymes at one end 4 a store of energy Which features are present in a human male gamete? A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

1 marks

Answer: A

This question in 0653/21 May/June 2024

12 What gives the human embryo protection from mechanical shock? A amniotic fluid B cervix C placenta D umbilical cord

1 marks

Answer: A

This question in 0653/22 May/June 2024

12 The diagram represents the human placenta. P blood of blood of fetus Q mother placenta P and Q show the net movement of substances. Which row identifies substances that travel in the directions P and Q? in direction P in direction Q A blood urea B oxygen carbon dioxide C excretory products glucose D amino acids toxins

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2024

12 What is the function of the placenta? A to allow the mixing of the mother’s blood with the blood of the fetus B to exchange nutrients and waste C to keep the fetus warm D to stop the fetus from moving

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2024