NCERT Multiple Choice Questions and Answers of Biology from Chapter Reproduction in Flowering Plants | Reproduction in Flowering Plants Questions and Answers of Class 12 Biology | Biology - Reproduction in Flowering Plants MCQs | NCERT Solution of Class 12 Biology Reproduction in Flowering Plants

Questions

31 Fusion of two dissimilar gametes is known as

1 Fertilization

2 Autogamy

3 Allogamy

4 Dichogamy

View Answer

Answer: Fertilization

32 Cauliflory is flowers produced

1 on old dormant bud

2 on young bud

3 on the axil

4 on the branch

View Answer

Answer: on the branch

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33 A polygonum type of embryo sac is

1 7-celled and 8-nucleate

2 8-celled and 7-nucleate

3 7-celled and 7-nucleate

4 8-celled and 8-nucleate

View Answer

Answer: 7-celled and 8-nucleate

34 In anther,meiosis occurs in :

1 Tapetal cells

2 Endothelial cells

3 Stomium cells

4 Pollen mother cells

View Answer

Answer: Pollen mother cells

35 Which one of the following is not a correct explanation of cross pollination?

1 The pollen grains of male flowers are transferred to the stigma of the female flowers

2 The pollen grains are transferred from one flower to another flower, of another plant of the same species

3 The pollen grains are transferred from one flower to another flower situated on the same plant

4 The pollen grains of one flower are transferred to the stigma of the same flower

View Answer

Answer: The pollen grains of one flower are transferred to the stigma of the same flower

36 Plants with ovaries having only one or a few ovules, are generally pollinated by

1 Wind

2 Bees

3 Butterflies

4 Birds

View Answer

Answer: Wind

37 Embryo sac is called monosporic when it develops from

1 One of the megaspores out of the four megaspores which are derived from division of megaspore mother cell

2 All the four megaspores

3 Three megaspores

4 Only from two functional megaspores

View Answer

Answer: One of the megaspores out of the four megaspores which are derived from division of megaspore mother cell

38 In a fully developed male gametophyte,no of nuclei is :

1 One

2 Two

3 Three

4 Four

View Answer

Answer: Three

39 In anatropous ovule what is the direction of micropyle?

1 Right

2 Downward

3 Upward

4 Left

View Answer

Answer: Downward

40 Germ pore is the region where the exine is

1 Thin

2 Uniform

3 Think and Uniform

4 Absent

View Answer

Answer: Absent

41 Banana plant develops from

1 Rhizome

2 Seed

3 Sucker

4 Stolon

View Answer

Answer: Sucker

42 Sporopollenin is chemically

1 Protein

2 Heteropolysaccharide

3 Fatty substance

4 Homopolysaccharide

View Answer

Answer: Fatty substance

43 Which one of the following pairs of plant structures has haploid number of chromosomes?

1 Egg cell and antipodal cells

2 Megaspore mother cell and antipodal cells

3 Egg nucleus and secondary nucleus

4 Nucellus and antipodal cells

View Answer

Answer: Egg cell and antipodal cells

44 Allogamy is best favoured by

1 Dichogamy

2 Dicliny

3 Cleistogamy

4 Homogamy

View Answer

Answer: Dichogamy

45 Which type of association is found in between entomophilous flower and pollinating agent?

1 Cooperation

2 Commensalism

3 Mutualism

4 Coevolution

View Answer

Answer: Mutualism

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