Sexual Reproduction in Flowering Plants MCQ Questions for Class 12 Biology Chapter 2 with Answers

Find here the NCERT chapter-wise Multiple Choice Questions from Class 12 Biology book Chapter 2 Sexual Reproduction in Flowering Plants with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Sexual Reproduction in Flowering Plants. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

NCERT MCQ Chapters for Class 12 Biology

Q1. Even in absence of pollinating agents seed-setting is assured in

(i) Commelina
(ii) Zostera
(iii) Salvia
(iv) Fig

(i) Commelina

Q2. Unisexuality of flowers prevents

(i) Autogamy, but not geitonogamy
(ii) Both geitonogamy and xenogamy
(iii) Geitonogamy, but not xenogamy
(iv) Autogamy and geitonogamy

(i) Autogamy, but not geitonogamy

Q3. When the pollen of a flower is transferred to the stigma of another flower on the same plant, the process is known as

(i) autogamy
(ii) geitonogamy
(iii) xenogamy
(iv) cleistogamy

(ii) geitonogamy

Q4. The outermost and innermost wall layers of microsporangium in an anther are respectively:

(i) Endothecium and tapetum
(ii) Epidermis and endodermis
(iii) Epidermis and middle layer
(iv) Epidermis and tapetum.

(iv) Epidermis and tapetum.

Q5. Normal Embryosac of Angiosperm is :

(i) Unicellular
(ii) Bicelled
(iii) Penta celled
(iv) Seven called

(i) Unicellular

Q6. Both chasmogamous and cleistogamous flowers are present in

(i) Helianthus
(ii) Commelina
(iii) Rosa
(iv) Gossypium

(ii) Commelina

Q7. The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons?

(i) Cotyledon
(ii) Endosperm
(iii) Aleurone layer
(iv) Plumule

(i) Cotyledo

Q8. The development of fruits without fertilisation of the ovary, is called

(i) parthenogenesis
(ii) parthenocarpy
(iii) agamospermy
(iv) apomixis

(ii) parthenocarpy

Q9. A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is :

(i) Plant is dioecious and bears only pistillate flowers
(ii) Plant is dioecious and bears both pistillate and staminate flowers
(iii) Plant is monoecious
(iv) Plant is dioecious and bears only staminate flowers.

(iv) Plant is dioecious and bears only staminate flowers.

Q10. Which structure is not found in Angiosperm?

(i) Archegonium
(ii) Carpel
(iii) Anther
(iv) Magagametophyte

(i) Archegonium

Q11. What is the function of filiform apparatus in an angiospermic embryo sac?

(i) Brings about opening of the pollen tube
(ii) Guides the pollen tube into a synergid
(iii) Prevents entry of more than one pollen tube into a synergid
(iv) None of these

(ii) Guides the pollen tube into a synergid

Q12. In a flowering plant, archesporium gives rise to

(i) Only tapetum and sporogenous cells
(ii) Only the wall of the sporangium
(iii) Both wall and the sporogenous cells
(iv) Wall and the tapetum

(iii) Both wall and the sporogenous cells

Q13. In some plants anther and stigma mature at same time this condition is called?

(i) Chasmogamy
(ii) Allogamy
(iii) Homogamy
(iv) Syngamy

(iii) Homogamy

Q14. in a typical complete, bisexual and hypogynous flower the arrangements of floral whorls on the thalamus from the outer most to the inner most is:

(i) Calyx, corolla, androecium and gynoecium
(ii) Calyx, corolla, gynoecium and androecium
(iii) Gynoecium, androecium, corolla and calyx
(iv) Androecium, gynoecium, corolla and calyx

(i) Calyx, corolla, androecium and gynoecium

Q15. Demerit of self pollinatlon is:

(i) Unisexua
(ii) Dichoganty
(iii) Hetorostyle
(iv) None of these

(ii) Dichoganty

Q16. Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in

(i) papaya
(ii) bottle gourd
(iii) maize
(iv) all of these.

(i) papaya

Q17. Which of the following occupies central position in flower?

(i) Stamen
(ii) Petals
(iii) Sepal
(iv) Pistil

(iv) Pistil

Q18. Which of the following represents the female gametophyte in angiosperms?

(i) Embryo
(ii) Embryo sac
(iii) Synergid
(iv) Endosperm

(ii) Embryo sac

Q19. During microsporogenesis, meiosis occurs in :

(i) Endothecium
(ii) Microspore mother cells
(iii) Microspore tetrads
(iv) Pollen grains.

(ii) Microspore mother cells

Q20. After fertilization ovule develops into:

(i) Integument
(ii) Seed
(iii) Embryo
(iv) Endosperm

(ii) Seed

Q21. Feathery stigma occurs in

(i) pea
(ii) wheat
(iii) Datura
(iv) Caesalpinia

(ii) wheat

Q22. Abundant occurrence of fossilized pollen grain is due to resistant:

(i) Pectocellulose
(ii) Pectolignin
(iii) Sporopollenin
(iv) Lignocellulose

(iii) Sporopollenin

Q23. Autogamy can occur in a chasmogamous flower if

(i) pollen matures before maturity of ovule.
(ii) ovules mature before maturity of pollen.
(iii) both pollen and ovules mature simultaneously.
(iv) both anther and stigma are of equal lengths.

(iii) both pollen and ovules mature simultaneously.

Q24. Starting from the innermost part, the correct sequence of parts in an ovule is :

(i) egg, nucellus, embryo sac, integument
(ii) egg, embryo sac, nucellus, integument
(iii) embryo sac, nucellus, integument, egg
(iv) egg, integument, embryo sac, nucellus.

(ii) egg, embryo sac, nucellus, integument

Q25. Parthenogenesis is common in :

(i) Grape
(ii) Mango
(iii) Citrus
(iv) Litchi

(i) Grape

Q26. Plants with ovaries having only one or a few ovules are generally pollinated by

(i) bees
(ii) butterflies
(iii) birds
(iv) wind

(iv) wind

Q27. In oogamy, fertilization involves

(i) A small non-motile female gamete and a large motile male gamete
(ii) A large non-motile female gamete and a small motile male gamete
(iii) A large non-motile female gamete and a small non motile male gamete
(iv) A large motile female gamete and a small nonmotile male gamete

(ii) A large non-motile female gamete and a small motile male gamete

Q28. Choose the correct statement from the following.

(i) Cleistogamous flowers always exhibit autogamy.
(ii) Chasmogamous flowers always exhibit geitonogamy.
(iii) Cleistogamous flowers exhibit both autogamy and geitonogamy.
(iv) Chasmogamous flowers never exhibit autogamy.

(i) Cleistogamous flowers always exhibit autogamy.

Q29. Autogamy can occur in a chasmogamous flower if:

(i) Pollen matures before maturity of ovule
(ii) Ovules mature before maturity of pollen
(iii) Both pollen and ovules mature simultaneously
(iv) Both anther and stigma are of equal lengths.

(iii) Both pollen and ovules mature simultaneously

Q30. An orthrotropous ovule is one in which micropyle and chalaza are :

(i) Oblique to funiculus
(ii) At right angles to funiculus
(iii) In straight line with funiculus
(iv) Parallel to funiculus

(iii) In straight line with funiculus

Q31. Which of the following is not a water pollinated plant ?

(i) Zostera
(ii) Vallisneria
(iii) Hydrilla
(iv) Cannabis

(iv) Cannabis

Q32. The phenomenon wherein, the ovary develops into a fruit without fertilisation is called

(i) Apomixis
(ii) Parthenocarpy
(iii) Asexual reproduction
(iv) Sexual reproduction

(ii) Parthenocarpy

Q33. In a fertilised embryo sac, the haploid, diploid and triploid structures are:

(i) Synergid, zygote and primary endosperm nucleus.
(ii) Synergid, antipodal and polar nuclei.
(iii) Antipodal, synergid and primary endosperm nucleus.
(iv) Synergid, polar nuclei and zygote.

(i) Synergid, zygote and primary endosperm nucleus.

Q34. In an embryo sac, the cells that degenerate after fertilisation are:

(i) Synergids and primary endosperm cell.
(ii) Synergids and antipodals.
(iii) Antipodals and primary endosperm cell.
(iv) Egg and antipodals.

(ii) Synergids and antipodals.

Q35. From among the situations given below, choose the one that prevents both autogamy and geitonogamy.

(i) Monoecious plant bearing unisexual flowers
(ii) Dioecious plant bearing only male or female flowers
(iii) Monoecious plant with bisexual flowers
(iv) Dioecious plant with bisexual flowers.

(ii) Dioecious plant bearing only male or female flowers

Q36. Spiny or sticky pollen grains and large, attractively coloured flowers are associated with

(i) hydrophily
(ii) entomophily
(iii) ornithophily
(iv) anemophily

(ii) entomophily

Q37. Pollen grain of large number of species can be stored in:

(i) Liquid oxygen
(ii) Liquid carbon dioxide
(iii) Liquid sulphur dioxide
(iv) Liquid nitrogen

(iv) Liquid nitrogen

Q38. While planning for an artificial hybridisation programme involving dioecious plants, which of the following steps would not be relevant?

(i) Bagging of female flower
(ii) Dusting of pollen on stigma
(iii) Emasculation
(iv) Collection of pollen.

(iii) Emasculation

Q39. In Capsella the endosperm in generally:

(i) Haploid
(ii) Diploid
(iii) Triploid
(iv) Tetraploid

(iii) Triploid

Q40. Maize is:

(i) Hygrophilous
(ii) Anemophilus
(iii) Cleistogamous
(iv) Entomophilous

(ii) Anemophilus

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