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

Questions

1 A bisexual flower which never opens up in its life span is known as

1 Autogamy

2 Allogamy

3 Homogamy

4 Cleistogamy

View Answer

Answer: Cleistogamy

2 In angiosperms embryo sac represents:

1 Male gametophyte

2 Sporophytes

3 Female gametophyte

4 None of these

View Answer

Answer: Female gametophyte

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3 Fibrous thickenings of hygroscopic nature are found in this part of the anther wall:

1 Middle layers

2 Epidermis

3 Endothecium

4 Tapetum

View Answer

Answer: Endothecium

4 In the fully organized polygonum type of embryo sac, what is the ratio of haploid, diploid and triploid nuclei?

1 6 : 1 : 0

2 6 : 0 : 1

3 3 : 1 : 3

4 3 : 2 : 3

View Answer

Answer: 6 : 1 : 0

5 An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is

1 Lignin

2 Cellulose

3 Cuticle

4 Sporopollenin

View Answer

Answer: Sporopollenin

6 Fertilization in which male gametes are carried through pollen tube is known as

1 Porogamy

2 Syngamy

3 Siphonogamy

4 Chalazogamy

View Answer

Answer: Siphonogamy

7 The coconut water and the edible part of coconut are equivalent to

1 Mesocarp

2 Embryo

3 Endosperm

4 Endocarp

View Answer

Answer: Endosperm

8 Vernalisation stimulates flowering in

1 Turmeric

2 Carrot

3 Elephant yam

4 Ginger

View Answer

Answer: Carrot

9 8-nucleate embryosacs are

1 monosporic only

2 bisporic only

3 tetrasporic only

4 any of these

View Answer

Answer: any of these

10 A monocarpic plant is one which

1 has only one carpel

2 produces only one seed

3 flowers and fruits only once in life time and thereafter dies

4 none of these

View Answer

Answer: flowers and fruits only once in life time and thereafter dies

11 In nature, cleistogamous flowers are

1 wind pollinated

2 insect pollinated

3 self pollinated

4 bird pollinated

View Answer

Answer: self pollinated

12 The gynoecium consists of many free pistils in flowers of

1 Papaver

2 Aloe

3 Tomato

4 Michelia

View Answer

Answer: Michelia

13 Double fertilization involves

1 Fusion of secondary nucleus with one male gamete

2 Fusion of secondary nucleus with both male gametes

3 Fusion of one polar nucleus with one male gamete

4 Any of above, depending on species

View Answer

Answer: Fusion of secondary nucleus with one male gamete

14 Filliform apparatus is found in

1 Anther wall

2 Synergids

3 Egg cell

4 Secondary nucleus

View Answer

Answer: Synergids

15 Which one of the following is surrounded by a callose wall?

1 Male gamete

2 Pollen grain

3 Egg

4 Microspore mother cell

View Answer

Answer: Microspore mother cell

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