Sexual Reproduction in Flowering Plants MCQ | Development of Male Gametophytes

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Multiple choice Questions of Botany Topic Sexual Reproduction in Flowering Plants MCQ and Development of Male Gametophytes MCQs with Answers ( Sexual Reproduction in Flowering Plants MCQ and Development of Male Gametophytes Quiz ) for NEET, GATE, AIAPGET, NEET MDS, NEET PG, DNB PDCET, AIIMS SS, PGIMER (Other), AIIMS PG and many more competitive examinations.

MCQ on Sexual Reproduction in Flowering Plants | MCQ on Reproduction in Flowering Plants

1. Exine of pollen grain is made up of

( a ) pectocellulose

( b ) lignocellulose

( c ) sporopollenin

( d ) pollen kitt

Ans. c

2. In flower , androecium is the male reproductive organ . It is a group of stamen that consist of filament and

( a ) embryo sac

( b ) nucellus

( c ) stamen

( d ) None of these

Ans. d

3. Microscopic structure in a flower that contains the polar nuclei is

( a ) polar tube

( b ) pollen sac

( c ) embryo sac

( d ) male gametophyte

Ans. c

4. Each anther is made up of two lobes and each lobe is divided into two chambers . These chambers are also called as

( a ) chalaza

( b ) funicle

( c ) theca

( d ) None of these

Ans. c

5. The male gametes of angiosperms are

( a ) uniflagellate

( b ) biflagellate

( c ) non – motile as there is no flagellated stage in the life cycle of angiosperms

( d ) None of the above

Ans. c

6. Which of the following is male gametophyte in angiosperms ?

( a ) Embryo sac

( b ) Pollen grain

( c ) Stamen

( d ) Male gamete

Ans. b

7. Tapetum is

( a ) parietal in origin

( b ) innermost wall layer of pollen sac

( c ) nutritive and provides wall material to pollen grains

( d ) All of the above

Ans. d

8. intine of pollen grain is made of

( a ) callose

( b ) pectocellulose

( c ) cellulose

( d ) fat – like sporopollenin

Ans. c

9. in anther , meiosis occurs in

( a ) tapetal cells

( b ) endothelial cells

( c ) pollen mother cells

( d ) stomium cells

Ans. c

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10. The function of anther is to

( a ) produce embryo sac

( b ) produce pollen grains

( c ) store and protect eggs

( d ) All of these

Ans. b

11. A pollinium consists of

( a ) a bag of pollen grains formed in a microsporangium

( b ) a cluster of pollen grains belonging to the chamber of microsporangium

( c ) group of four pollen grains derived from a single mother cell

( d ) two pollen tetrads attached by the small stalks

Ans. a

12. Each corner of anther is made up of four walls are epidermis , endothecium , middle layers and

( a ) hypodermis

( b ) tapetum

( c ) theca

( d ) Both ( a ) and ( b )

Ans. b

13. The cells capable of forming microspore cells are called

( a ) PMC

( b ) CMC

( c ) DMC

( d ) None of these

Ans. a

14. Each microspore develops into

( a ) embryo sac

( b ) pollen grain

( c ) pollen sac

( d ) egg cell

Ans. b

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15. The general diameter of pollen grains is

( a ) 100-150 nm

( b ) 25-50 nm

( c ) 10-20 um

( d ) None of these

Ans. b

16. Mature pollen grain contains two cells , first one is the vegetative cell and the second one is

( a ) tube cell

( b ) synergids

( c ) generative cell

( d ) Both ( b ) and ( c )

Ans. c

17. Which of the following is the hardest material ?

( a ) Collagen

( b ) Sporopollenin

( c ) Cellulose

( d ) None of these

Ans. b

18. In most cases , the pollen grain shed at the stage of

( a ) two cells

( b ) five cells

( c ) four cells

( d ) All of these

Ans. a

19. Which of the following cells generates male gametes ?

( a ) Vegetative cell

( b ) Tube cell

( c ) Generative cell

( d ) Both ( a ) and ( b )

Ans. c

20. Which of the following cells is involved in the formation of pollen tube ?

( a ) Pollen grain

( b ) Generative cell

( c ) Vegetative cell

( d ) None of these

Ans. c

21. The usual arrangement of microspores in a tetrad is

( a ) tetrahedral and bilateral

( b ) tetrahedral and linear

( c ) tetrahedral and T – shaped

( d ) tetrahedral and decussate

Ans. a

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22. The colour of a pollen kitt is

( a ) red

( b ) brown

( c ) blue

( d ) yellow

Ans. d

23. A young pollen grain is best defined as

( a ) male gamete

( b ) spore mother cell

( c ) mature male gametophyte

( d ) partially developed male gametophyte

Ans. a

24. Germination of pollen is stimulated by

( a ) zincates

( b ) chlorides

( c ) borates

( d ) molybdates

Ans. a

25. Which one of the following forms a male gametes in angiosperms ?

( a ) Generative cell

( b ) Body cell

( c ) Tube cell

( d ) Antheridial cell

Ans. a

26. Immature anther wall is made up of

( a ) epidermis

( b ) middle layers

( c ) endothecium

( d ) tapetum

Ans. a

27. Which one of the following represents male gametophyte ?

( a ) Zygote

( b ) Secondary nucleus

( c ) Pollen grain

( d ) Antipodals

Ans. c

28. What does a microspore mother cell undergoes , during the formation of pollen grains ?

( a ) One mitotic division

( b ) One meiotic division

( c ) One meiotic and one mitotic division

( d ) One meiotic and two mitotic divisions

Ans. b

29. Outer layer of a pollen grain is made up of

( a ) cellulose

( b ) lignin

( c ) sporopoilenin

( d ) chitin

Ans. c

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30. The most resistant material found in the pollen grain is

( a ) cuticle

( b ) intine

( c ) pectocellulose

( d ) sporopollenin

Ans. d

31. A microspore is a

( a ) male gamete

( b ) first cell of male gametophyte

( c ) last cell of male gametophyte

( d ) diploid cell

Ans. b

32. In a fully developed male gametophyte , number of nuclei is

( a ) one

( b ) two

( c ) three

( d ) four

Ans. c

33. Male gametophyte of an angiosperms is shed at

( a ) four – celled pollen grains

( b ) three – celled pollen grains

( c ) microspore mother cell

( d ) anther

Ans. b

34. Male gametophyte of angiosperms / monocots is

( a ) nucellus

( b ) microspore

( c ) microsporangium

( d ) stamen

Ans. b

35. In an angiospermic plant , how many microspore mother cells are required to produce 100 pollen grains ? 

( a ) 75

( b ) 100

( c ) 25

( d ) 50

Ans. c

36. In angiosperm , all the four microspores of tetrad are covered by a layer which is formed by

( a ) pectocellulose

( b ) callose

( c ) cellulose

( d ) sporopollerin

Ans. a

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37. Male gametes in angiosperms are formed by the division of

( a ) generative cell

( b ) microspore mother cell

( c ) vegetative cell

( d ) microspore

Ans. a

38. Development of male gametophyte begins

( a ) after pollination

( b ) before pollination

( c ) on the stigma

( d ) in the embryo sac

Ans. b

39. 2 to 3 celled male gametophyte , starts its further development after pollination

( a ) in the style

( b ) in the ovary

( c ) on the stigma

( d ) in the ovule

Ans. c

40. Which part of male gametophyte , disintigrates before fertilisation ?

( a ) Generative nucleus

( b ) Tube nucleus

( c ) Male gamete

( d ) Germ pore

Ans. b

41. Pollen grains preserved for long periods in fossils due

( a ) cellulose

( b ) sporopollenin

( c ) carotenoids

( d ) ubisch bodies

Ans. b

42. Ubisch bodies are provided by

( a ) tapetum

( b ) pollen kitt

( c ) exine

( d ) intine

Ans. a

43. Smallest pollens are in

( a ) Cucurbita

( b ) Nyctoanthes

( c ) Myosotis

( d ) Hyacinthus

Ans. c

44. Which forms maximum proportion in chemica composition of pollens ?

( a ) Proteins

( b ) Fats

( c ) Carbohydrates

( d ) Water

Ans. c

45. ‘ Nemec phenomenon ‘ relates to

( a ) 7 celled female gemetophyte

( b ) 8 nucleated male gemetophyte

( c ) formation of pollen kitt

( d ) None of the above

Ans. b

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