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

Questions

16 Both, autogamy and geitonogamy are prevented in

1 Castor

2 Maize

3 Papaya

4 Cucumber

View Answer

Answer: Papaya

17 Embryo sac is also known as

1 Megagametophyte

2 Microgametophyte

3 Megasporangium

4 Microsporangium

View Answer

Answer: Megagametophyte

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18 IA hyaline, bisexual and self-fertilized flower that does not open at all, is

1 Chasmogamous

2 Apogamous

3 Cleistogamous

4 Polygamous

View Answer

Answer: Cleistogamous

19 Fragrant flowers with well developed nectaries are adapted for

1 Anemophily

2 Zoophily

3 Hydrophily

4 Entomophily

View Answer

Answer: Entomophily

20 What is the ratio of equational divisions that take place in Cycas and angiosperms respectively leading to the formation of male gametes from pollen grains?

1 2 : 1

2 3 : 1

3 3 : 2

4 2 : 3

View Answer

Answer: 2 : 1

21 Even in absence of pollinating agents seed-setting is assured in

1 Salvia

2 Fig

3 Commelina

4 Zostera

View Answer

Answer: Commelina

22 What is the function of germ pore?

1 Initiation of pollen tube

2 Absorption of water for seed germination

3 Emergence of radicle

4 Release of male gametes

View Answer

Answer: Initiation of pollen tube

23 Axillary buds are used to raise crop of

1 Wheat

2 Rice

3 Groundnut

4 Sugarcane

View Answer

Answer: Sugarcane

24 In which of the following germination of embryo occurs, when fruit is still attached to the plant?

1 Mango

2 Mangove plants

3 Pinus

4 Pinus

View Answer

Answer: Mangove plants

25 Ornithophily refers to the pollination by which of the following:

1 Snails

2 Air

3 Insects

4 Birds

View Answer

Answer: Birds

26 Which of the following pairs in angiosperms are diploid and triploid, respectively?

1 Polar nucleus and secondary nucleus

2 Microspore mother cell and egg cell

3 Secondary nucleus and endosperm

4 Endosperm and antipodal cells

View Answer

Answer: Secondary nucleus and endosperm

27 Wind pollinated flowers are

1 Small, brightly coloured, producing large number of pollen grains

2 Small, producing large number of dry pollen grains

3 Small, producing nectar and dry pollen

4 Large, producing abundant nectar and pollen

View Answer

Answer: Small, producing large number of dry pollen grains

28 Apomixis is a type of reproduction that results is the development of a/an

1 New organism without fusion of gametes

2 New organism from fusion products of gametes

3 Embryo from endosperm

4 Embryo from nucellus

View Answer

Answer: New organism without fusion of gametes

29 Ovule is attached to the placenta of ovary wall by:

1 Funicle

2 Raphae

3 Hilum

4 Testa

View Answer

Answer: Funicle

30 Which of the following statements about sporopollenin is false?

1 Exine has apertures called germ pores where sporopollenin is present

2 Sporopollenin is one of the resistant organic materials

3 Exine is made up of sporopollenin

4 Sporopollenin can withstand high temperatures and strong acids

View Answer

Answer: Exine has apertures called germ pores where sporopollenin is present

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