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

10 The diagram shows a section through a flower. P Which row correctly identifies structure P and the method of pollination in the flower? method of structure P pollination A anther insect B anther wind C stigma insect D stigma wind

1 marks

Answer: A

This question in 0653/22 Feb/March 2017

10 A shoot is illuminated from one side only. What collects on the dark side of the shoot? A auxin B chlorophyll C glucose D starch

1 marks

Answer: A

This question in 0653/21 May/June 2017

10 The diagram shows a section through a flower. Q Which row correctly identifies structure Q and the method of pollination in the flower? method of structure Q pollination A anther insect B anther wind C stigma insect D stigma wind

1 marks

Answer: C

This question in 0653/23 May/June 2017

10 A student carried out an experiment to test geotropism. A bean seed was pinned to a card with wet cotton wool, as shown. card card wet cotton wool wet cotton wool bean seed bean seed pin pin gravity Every day the card was turned 90° clockwise. After a few days the student drew the results of the root growth. Which diagram shows the student’s result? A B C D

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2017

9 How does auxin cause a plant shoot to bend to the right? A Cells elongate more on the left side of the shoot than on the right side. B Cells elongate more on the right side of the shoot than on the left side. C Cells shrink on the left side of the shoot. D Cells shrink on the right side of the shoot.

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2017

10 The table shows features of four flowers. Which row shows features of a typical wind-pollinated flower? petals pollen grains shape of stigma A large white petals large and hooked branched and feathery and sweet scent B large white petals small and light straight and enclosed and sweet scent within the flower C small green petals large and hooked straight and enclosed and no scent within the flower D small green petals small and light branched and feathery and no scent

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2017

9 The diagram shows a seedling with its shoot horizontal. shoot P Q Gravity is the stimulus acting on the seedling. Where will the greatest concentrations of auxin be found in the shoot and what effect will this have on the rate of cell elongation? greatest concentration effect of auxin on rate of auxin of cell elongation A P increases B P decreases C Q increases D Q decreases

1 marks

Answer: C

This question in 0653/21 May/June 2018

10 Why are many flowers brightly coloured? A to attract insects to pollinate the flower B to encourage birds to eat insects on the flower C to frighten animals away from the flower D to help with wind-pollination of the flower

1 marks

Answer: A

This question in 0653/21 May/June 2018

9 Which row describes sexual reproduction? number of offspring genetically involves zygote parents identical to parents production A 1 v v B 1 x x Cc 2 v x D 2 x v

1 marks

Answer: D

This question in 0653/22 May/June 2018

10 Which features are correct for a wind-pollinated flower? nectar petals A absent small B absent large C present small D present large

1 marks

Answer: A

This question in 0653/22 May/June 2018

10 The diagram shows a seedling with its root horizontal. Y root X Gravity is the stimulus acting on the seedling. Where will the greatest concentration of auxin be found in the root and what effect will this have on the rate of cell elongation? greatest effect of auxin concentration on rate of cell of auxin elongation A X decreases B X increases C Y decreases D Y increases

1 marks

Answer: A

This question in 0653/23 May/June 2018

11 The table shows some features of flowers. Which features are typical of wind-pollinated flowers? petals position of anther nectaries A large inside flower absent B large outside flower present C small inside flower present D small outside flower absent

1 marks

Answer: D

This question in 0653/23 May/June 2018

8 What controls phototropism and gravitropism in the shoot of a plant? A auxin in the cells B carbon dioxide in the air C minerals in the soil D water in the cells

1 marks

Answer: A

This question in 0653/22 Feb/March 2019

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

9 Diagram 1 shows a germinating bean seed placed horizontally. pin diagram 1 Diagram 2 shows the same seed after three days. The shoot has grown upwards because of the action of an auxin. Where is the auxin produced? D C A B pin diagram 2

1 marks

Answer: D

This question in 0653/21 May/June 2019

11 The diagram shows a section through an insect-pollinated flower. 1 2 3 4 Which labels are correct? anther petal sepal stigma A 1 3 4 2 B 1 4 3 2 C 2 3 4 1 D 2 4 3 1

1 marks

Answer: A

This question in 0653/21 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 0653/22 May/June 2019

11 Which process is the transfer of pollen grains from the anther to the stigma? A fertilisation B germination C pollination D transpiration

1 marks

Answer: C

This question in 0653/23 May/June 2019

11 The table gives comparisons between insect-pollinated and wind-pollinated flowers. Which row is correct? surface of stigma surface of pollen insect wind insect wind A feathery sticky smooth spiky B feathery sticky spiky smooth C sticky feathery smooth spiky D sticky feathery spiky smooth

1 marks

Answer: D

This question in 0653/21 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 0653/22 Oct/Nov 2019

10 Which row gives the most suitable characteristics of a wind-pollinated flower? pollen grains anthers stigma A smooth few small B smooth many large C sticky few large D sticky many small

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

10 The diagram shows four pollen grains. Which pollen grain is most likely to be distributed by an animal? A B C D

1 marks

Answer: C

This question in 0653/23 Oct/Nov 2019

11 The diagram shows a section through a flower. Y X What are the correct labels and functions for parts X and Y of the flower? X Y label function label function A petal attracts insects anther produces pollen grains B petal protects flower ovary produces pollen grains C sepal attracts insects anther contains egg cells D sepal protects flower ovary contains egg cells

1 marks

Answer: A

This question in 0653/22 Feb/March 2020

10 The diagram shows pollen grains from two different plants. 1 2 How are the two pollen grains dispersed? pollen grain 1 pollen grain 2 A insect insect B insect wind C wind insect D wind wind

1 marks

Answer: C

This question in 0653/21 May/June 2020

11 Which diagram of a flower is correctly labelled? A B anther stigma stigma anther C D anther stigma anther stigma

1 marks

Answer: A

This question in 0653/22 May/June 2020

10 Which row shows the correct descriptions for the anther and stigma of a wind-pollinated flower? anther stigma stigma position position description A inside flower inside flower smooth B exposed exposed feathery C exposed inside flower smooth D inside flower exposed feathery

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2020

11 Which row describes asexual reproduction? number of a zygote is offspring identical parents produced to the parent A 1 no yes B 1 yes no C 2 no yes D 2 yes no

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2020

9 Which row describes asexual reproduction? number of a zygote is offspring identical parents produced to the parent A 1 no yes B 1 yes no C 2 no yes D 2 yes no

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2020

10 On which part of a flower is pollen deposited during pollination? A ovary B stamen C stigma D style

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2020

10 Which row describes asexual reproduction? number of a zygote is offspring identical parents produced to the parent A 1 no yes B 1 yes no C 2 no yes D 2 yes no

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2020

11 The diagram shows a section through a buttercup flower. Which structure produces pollen grains? A D B C

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2020

11 The diagram shows a flower. X Y Which row is correct for the flower illustrated? X Y A captures insect-carried pollen produces rough pollen grains B captures wind-carried pollen produces smooth pollen grains C produces rough pollen grains captures insect-carried pollen D produces smooth pollen grains captures wind-carried pollen

1 marks

Answer: D

This question in 0653/22 Feb/March 2021

9 The diagram shows a parent plant. parent plant Which offspring has been produced by asexual reproduction from this plant? A B C D

1 marks

Answer: A

This question in 0653/21 May/June 2021

10 The diagram shows a flower. X What is structure X? A anther of an insect-pollinated flower B anther of a wind-pollinated flower C stigma of an insect-pollinated flower D stigma of a wind-pollinated flower

1 marks

Answer: D

This question in 0653/21 May/June 2021

11 The diagram shows a wind-pollinated flower. Which label identifies a stigma? B C A D

1 marks

Answer: A

This question in 0653/23 May/June 2021

9 A plant shoot is illuminated from one side only. What collects on the shaded side of the plant shoot? A auxin B chlorophyll C glucose D starch

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2021

10 Which part of a flower is not required for pollination? A anther B sepal C stamen D stigma

1 marks

Answer: B

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

10 What is a characteristic of insect-pollinated flowers? A anthers hanging outside the flower B hairy or sticky stigmas C large quantities of smooth, light pollen D no scent or nectar

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2021

10 Which features are correct for a wind-pollinated flower? nectar petals A absent small B absent large C present small D present large

1 marks

Answer: A

This question in 0653/22 Feb/March 2022

10 Some examples of how parts of a plant grow are listed. 1 grow away from gravity 2 grow away from the direction of light 3 grow towards gravity 4 grow towards the direction of light Which growth responses are due to gravitropism? A 1, 2 and 4 B 1 only C 1 and 3 D 3 only

1 marks

Answer: C

This question in 0653/22 May/June 2022

11 Which row is correct for a wind-pollinated flower? pollen shape position of stigma A outside of flower B inside of flower C inside of flower D outside of flower

1 marks

Answer: A

This question in 0653/22 May/June 2022

10 The diagram shows a seed germinating in soil. soil surface shoot root Which tropic responses are taking place in the shoot and root while they are still underground? shoot root A gravitropism gravitropism B gravitropism phototropism C phototropism gravitropism D phototropism phototropism

1 marks

Answer: A

This question in 0653/23 May/June 2022

11 The diagram shows a typical wind-pollinated flower. Which structure is the stigma? A B C D

1 marks

Answer: A

This question in 0653/23 May/June 2022

11 Light shines on a shoot tip from the direction shown. light X Y After three days, the shoot tip has bent towards the light. What is the reason for this change? A Auxin moves away from the light causing cell elongation in area Y. B Auxin moves away from the light preventing cell elongation in area Y. C Auxin moves towards the light causing cell elongation in area X. D Auxin moves towards the light preventing cell elongation in area X.

1 marks

Answer: A

This question in 0653/21 Oct/Nov 2022

12 Which environmental conditions are necessary for seeds to germinate? suitable oxygen sunlight water temperature A yes yes yes no B yes yes no yes C no no yes yes D no yes no yes

1 marks

Answer: B

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

10 The diagram shows a section through a flower. P Q R Which row identifies the labelled parts of the flower? P Q R A anther ovary stigma B anther stigma ovary C stamen carpel sepal D stamen sepal carpel

1 marks

Answer: B

This question in 0653/22 Feb/March 2023

11 The diagrams show four different flowers. 1 2 3 4 Which flowers are wind pollinated? 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 2023

11 Which row describes asexual reproduction? number of offspring genetically parents involved identical to each other A 1 yes B 1 no C 2 yes D 2 no

1 marks

Answer: A

This question in 0653/22 May/June 2023

10 Which definition of asexual reproduction is correct? A production of genetically different offspring from one parent B production of genetically different offspring from two parents C production of genetically identical offspring from one parent D production of genetically identical offspring from two parents

1 marks

Answer: C

This question in 0653/23 May/June 2023

10 Which statement about auxin is correct? A Auxin is always equally distributed. B Auxin is made in the carpels only. C Auxin spreads through the plant from the sepals. D Auxin stimulates cell elongation.

1 marks

Answer: D

This question in 0653/21 Oct/Nov 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

12 Which feature is a structural adaptation found in wind-pollinated flowers? A Scent is produced. B Nectar is produced. C Petals are small or absent. D Stigma is inside flower.

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2023

11 Which row describes asexual reproduction? offspring number of a zygote is genetically identical parents produced to the parent A 1 no yes B 1 yes no C 2 no yes D 2 yes no

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2023

12 Which statement describes fertilisation in a flowering plant? A fusion of a pollen nucleus with a nucleus in the ovule B fusion of a pollen nucleus with the stigma C transfer of a pollen grain from the anther to the stigma D transfer of a pollen grain from the filament to the stigma

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2023

10 The table shows some statements about reproduction. Which row is correct for asexual reproduction? offspring are offspring are the zygote is genetically identical | genetically identical produced when to each other to the parent gametes fuse A v v x B v x x Cc x v v D x x v

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2023

11 The diagram shows an insect-pollinated flower. Which label identifies a petal? A D B C

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2023

10 Some plants have separate male and female flowers. Which features are present in a male flower? anthers ovules petals stigma A Jv v v x B Jv x Jv x Cc v x x x D x v v Jv

1 marks

Answer: B

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

11 Which row describes adaptations of a wind-pollinated flower? ; anthers large petals stigma inside flower outside flower A v v x B x v v Cc v x x D x x v

1 marks

Answer: D

This question in 0653/21 May/June 2024

11 Which row shows the anther and stigma of an insect-pollinated flower? 1 2 3 4 insect-pollinated insect-pollinated anther stigma A 1 2 B 1 4 C 4 1 D 4 3

1 marks

Answer: B

This question in 0653/22 May/June 2024

11 Which combination of features describes pollen grains from a wind-pollinated flower? A large and spiky B small and light C spiky and sticky D sticky and smooth

1 marks

Answer: B

This question in 0653/23 May/June 2024

11 Which row about wind-pollinated plants is correct? position of stamens size of petals compared and stigmas to insect-pollinated plants A outside the flower large B outside the flower small C inside the flower large D inside the flower small

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2024

10 Which row is correct for sexual reproduction? requires gametes offspring produced A yes genetically different B yes genetically identical C no genetically different D no genetically identical

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2024

11 Which diagram shows the stigma and stamen of a wind-pollinated flower? A B C D

1 marks

Answer: A

This question in 0653/23 Oct/Nov 2024

11 Which row describes structural adaptations of insect-pollinated and wind-pollinated flowers? insect-pollinated flowers wind-pollinated flowers A the flowers have large, the anthers hang on long colourful petals filaments outside the flower B the flowers have large, the stigma is feathery and colourful sepals hangs outside the flower C the flowers have large, the anthers are on short colourful petals filaments inside the flower D the flowers have large, the stigma is sticky and colourful sepals is inside the flower

1 marks

Answer: A

This question in 0653/22 Feb/March 2025

9 Which row about the anther and stigma of a wind-pollinated flower is correct? anther stigma stigma position position description A inside flower inside flower smooth B outside flower outside flower feathery C outside flower inside flower smooth D inside flower outside flower feathery

1 marks

Answer: B

This question in 0653/21 May/June 2025

11 The diagram shows a flower. X What is structure X? A anther of an insect-pollinated flower B anther of a wind-pollinated flower C stigma of an insect-pollinated flower D stigma of a wind-pollinated flower

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2025