Plant Reproduction - Question Paper

Time: 3 Hours
Maximum Marks: 300
Instructions:

• All questions are compulsory
• Read each question carefully before answering
• MCQs carry 1 mark each
• Short questions carry 1 mark each
• Medium questions carry 2 marks each
• Long questions carry 3 marks each

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SECTION A: Multiple Choice Questions (100 × 1 = 100 Marks)

Choose the correct option for each question:

1. Sexual reproduction in flowering plants involves: a) Only male gametes b) Only female gametes c) Fusion of male and female gametes d) Vegetative parts

2. Fertilization in plants results in the formation of: a) Pollen b) Ovule c) Zygote d) Flower

3. Vegetative reproduction is a type of: a) Sexual reproduction b) Asexual reproduction c) Cross-pollination d) Self-pollination

4. Which part of potato is used for vegetative reproduction? a) Roots b) Leaves c) Eyes (buds) on tuber d) Flowers

5. Onion reproduces vegetatively through: a) Roots b) Bulb c) Leaves d) Seeds

6. Carrot can reproduce vegetatively from its: a) Leaves b) Stem c) Root d) Flowers

7. Bryophyllum reproduces through: a) Stem b) Root c) Leaf buds d) Seeds

8. The process of seed movement away from parent plant is called: a) Germination b) Pollination c) Fertilization d) Seed dispersal

9. Wind-dispersed seeds are usually: a) Heavy and large b) Light and small c) Fleshy and colorful d) Hard and spiny

10. Dandelion seeds are dispersed by: a) Water b) Animals c) Wind d) Explosion

11. Maple seeds have which adaptation for dispersal? a) Parachute-like hairs b) Wings c) Hooks d) Fleshy covering

12. Cotton seeds are dispersed by: a) Water b) Wind c) Animals d) Self-dispersal

13. Water-dispersed seeds are: a) Heavy and dense b) Light and fluffy c) Buoyant and fibrous d) Hard and spiny

14. Coconut dispersal occurs through: a) Wind b) Water c) Animals d) Explosion

15. Lotus seeds are dispersed by: a) Wind b) Water c) Animals d) Self-mechanism

16. Animals disperse seeds through fleshy fruits by: a) Carrying them externally b) Eating and excreting them c) Burying them d) All of the above

17. Mango seeds are dispersed by animals through: a) External attachment b) Ingestion c) Burial d) Carrying in beaks

18. Seeds with hooks and spines are dispersed by: a) Wind b) Water c) External attachment to animals d) Ingestion by animals

19. Xanthium seeds are dispersed by: a) Wind b) Water c) Animal fur attachment d) Explosion

20. Burdock seeds have which adaptation? a) Wings b) Parachutes c) Hooks d) Buoyancy

21. The male gamete in plants is found in: a) Ovule b) Pollen c) Seed d) Fruit

22. The female gamete in plants is located in: a) Pollen b) Anther c) Ovule d) Stigma

23. Which is NOT a method of vegetative reproduction? a) Stem propagation b) Root propagation c) Leaf propagation d) Seed propagation

24. Potato tuber is a modified: a) Root b) Stem c) Leaf d) Flower

25. Mother of Thousands is the common name for: a) Potato b) Onion c) Carrot d) Bryophyllum

26. Seed dispersal helps in: a) Preventing overcrowding b) Colonizing new areas c) Reducing disease spread d) All of the above

27. Overcrowding of plants leads to competition for: a) Sunlight only b) Water only c) Nutrients only d) Sunlight, water, and nutrients

28. Cross-pollination is promoted by: a) Seed dispersal b) Vegetative reproduction c) Self-pollination d) Asexual reproduction

29. Genetic diversity in plants is increased by: a) Vegetative reproduction b) Seed dispersal and cross-pollination c) Self-pollination d) Cloning

30. The zygote develops into a: a) Flower b) Pollen c) Seed d) Root

31. Which reproductive method produces genetically identical offspring? a) Sexual reproduction b) Cross-pollination c) Vegetative reproduction d) Fertilization

32. Pollination must occur before: a) Germination b) Fertilization c) Seed dispersal d) Vegetative reproduction

33. Seeds that float on water have: a) Dense coverings b) Heavy structures c) Fibrous or spongy coverings d) Smooth surfaces

34. Animals that bury seeds for later consumption are like: a) Birds b) Fish c) Squirrels d) Insects

35. Wind dispersal is most effective for seeds that are: a) Large and heavy b) Small and light c) Sticky and dense d) Hard and smooth

36. The advantage of seed dispersal includes: a) Reduced parent-offspring competition b) Access to new habitats c) Reduced disease transmission d) All of the above

37. Cherry seeds are dispersed by: a) Wind b) Water c) Animals eating the fruit d) Self-mechanism

38. Which plant part is NOT involved in vegetative reproduction? a) Modified stems b) Specialized roots c) Leaf buds d) Pollen grains

39. The fusion of gametes is called: a) Pollination b) Germination c) Fertilization d) Dispersal

40. Vegetative propagation occurs without: a) Parent plant b) Seeds or spores c) Suitable conditions d) Plant parts

41. Air-dispersed seeds often have: a) Bright colors b) Sweet smell c) Wing-like structures d) Hard shells

42. Water dispersal is common in: a) Desert plants b) Mountain plants c) Aquatic and coastal plants d) Underground plants

43. The primary purpose of seed dispersal is: a) Plant nutrition b) Plant growth c) Species survival and spread d) Flower production

44. Bryophyllum leaf buds develop into new plants when: a) Exposed to sunlight b) They fall on moist soil c) They are heated d) They are dried

45. Sexual reproduction in plants requires: a) One parent b) Two parents c) Male and female gametes d) Only vegetative parts

46. The advantage of vegetative reproduction is: a) Genetic diversity b) Rapid multiplication c) Disease resistance d) Environmental adaptation

47. Seed coat protects the: a) Fruit b) Flower c) Embryo d) Pollen

48. Which is an example of root propagation? a) Potato b) Onion c) Carrot d) Bryophyllum

49. Animal-dispersed seeds often have: a) Light weight b) Bright colored fruits or hooks c) Smooth surfaces d) Air-filled spaces

50. The reproductive advantage of seed dispersal is: a) Immediate germination b) Reduced competition and wider distribution c) Faster growth d) Better nutrition

51. Gametes are: a) Vegetative parts b) Sex cells c) Seed coats d) Flower petals

52. In vegetative reproduction, new plants grow from: a) Seeds only b) Spores only c) Vegetative parts of parent plant d) Pollen grains

53. Potato eyes are actually: a) Roots b) Leaves c) Buds d) Flowers

54. Onion bulb is a modified: a) Root b) Stem c) Leaf d) Flower

55. The top part of carrot root can: a) Produce flowers only b) Produce new plants c) Store water only d) Attract insects

56. Bryophyllum is also known as: a) Mother of Thousands b) Air Plant c) Water Plant d) Desert Rose

57. Dandelion seeds have: a) Wings b) Hooks c) Parachute-like hairs d) Fleshy covering

58. Maple seeds are called: a) Samaras b) Achenes c) Berries d) Pods

59. Cotton seeds appear: a) Hard and smooth b) Fluffy and light c) Heavy and dense d) Sticky and rough

60. Coconut husk is: a) Smooth and hard b) Fibrous and buoyant c) Soft and sweet d) Thin and brittle

61. Lotus fruit is: a) Fleshy and sweet b) Hard and dry c) Spongy and buoyant d) Sticky and rough

62. Animals eat fleshy fruits and disperse seeds through: a) Vomiting b) Feces c) Saliva d) Urine

63. Xanthium seeds stick to animals using: a) Glue-like substance b) Hooks and spines c) Magnetic attraction d) Static electricity

64. Squirrels help in seed dispersal by: a) Eating all seeds b) Destroying seeds c) Forgetting buried seeds d) Collecting seeds

65. Seed dispersal prevents: a) Germination b) Growth c) Overcrowding d) Reproduction

66. New habitats are colonized through: a) Vegetative reproduction only b) Seed dispersal c) Root growth only d) Flower production

67. Disease spread is reduced by: a) Keeping plants together b) Dispersing seeds away from parent c) Vegetative reproduction d) Self-pollination

68. Genetic diversity is promoted by: a) Vegetative reproduction b) Self-fertilization c) Cross-pollination and seed dispersal d) Cloning

69. The fusion product of male and female gametes is: a) Embryo b) Zygote c) Seed d) Fruit

70. Fertilization occurs between: a) Pollen and stigma b) Anther and ovary c) Male gamete and female gamete d) Flower and leaf

71. Vegetative reproduction is also called: a) Sexual propagation b) Vegetative propagation c) Cross-propagation d) Gametic reproduction

72. Which plant structure is NOT used in vegetative reproduction? a) Runner b) Bulb c) Tuber d) Pollen

73. The 'eyes' of potato are: a) Actual eyes b) Holes in tuber c) Growth buds d) Root tips

74. Onion reproduction through bulb is an example of: a) Root propagation b) Stem propagation c) Leaf propagation d) Seed propagation

75. Carrot propagation occurs through: a) Stem cutting b) Root cutting c) Leaf cutting d) Flower cutting

76. Bryophyllum plantlets develop from: a) Stem nodes b) Root tips c) Leaf margin buds d) Flower buds

77. Seeds need to disperse to: a) Find suitable growing conditions b) Avoid parent plant competition c) Spread the species d) All of the above

78. Wind-dispersed seeds are adapted with: a) Heavy weight b) Aerodynamic structures c) Sticky surfaces d) Hard shells

79. Water-dispersed seeds can: a) Sink immediately b) Float on water c) Dissolve in water d) Repel water

80. Animal-dispersed seeds use animals as: a) Food source b) Transport agents c) Protection d) Shelter

81. Fleshy fruits attract animals with: a) Bright colors and sweet taste b) Bad smell c) Hard texture d) Bitter taste

82. Hooked seeds attach to: a) Plant stems b) Animal fur or feathers c) Soil particles d) Water droplets

83. Buried seeds may germinate when: a) Eaten by animals b) Forgotten and left in soil c) Carried by wind d) Dissolved in water

84. Overcrowding leads to: a) Better growth b) Resource competition c) Improved health d) Faster reproduction

85. New area colonization helps: a) Species survival b) Genetic mixing c) Habitat expansion d) All of the above

86. Disease spread reduction occurs when: a) Plants grow close together b) Seeds are dispersed widely c) Vegetative reproduction occurs d) Self-pollination happens

87. Cross-pollination increases: a) Disease susceptibility b) Genetic uniformity c) Genetic diversity d) Vegetative growth

88. Sexual reproduction produces offspring that are: a) Genetically identical b) Genetically diverse c) Always stronger d) Always weaker

89. Asexual reproduction produces offspring that are: a) Genetically diverse b) Genetically identical c) Always male d) Always female

90. The main disadvantage of vegetative reproduction is: a) Slow multiplication b) Need for two parents c) Lack of genetic diversity d) Complex process

91. The main advantage of sexual reproduction is: a) Rapid multiplication b) Genetic diversity c) Simple process d) No need for gametes

92. Pollination is the transfer of: a) Seeds to soil b) Pollen to stigma c) Water to roots d) Nutrients to leaves

93. After fertilization, the ovule develops into: a) Fruit b) Seed c) Flower d) Pollen

94. After fertilization, the ovary develops into: a) Seed b) Fruit c) Pollen d) Root

95. Germination is the process of: a) Seed formation b) Seed dispersal c) Seed sprouting into new plant d) Pollen formation

96. Which environmental factor is NOT important for germination? a) Water b) Oxygen c) Suitable temperature d) Bright light (for all seeds)

97. The embryo in a seed is the: a) Seed coat b) Food store c) Young plant d) Protective layer

98. Seed dormancy helps seeds: a) Germinate immediately b) Survive unfavorable conditions c) Grow faster d) Attract animals

99. Double fertilization occurs in: a) All plants b) Flowering plants c) Non-flowering plants d) Fungi

100. The biological significance of reproduction is: a) Individual growth b) Species continuation c) Food production d) Shelter provision

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SECTION B: Short Answer Questions (50 × 1 = 50 Marks)

Answer the following questions in one sentence or a few words:

1. What is sexual reproduction in plants?

2. Define fertilization in flowering plants.

3. What is vegetative reproduction?

4. Name the part of potato used for vegetative reproduction.

5. Which part of onion is used for vegetative propagation?

6. From which part can carrot reproduce vegetatively?

7. How does Bryophyllum reproduce vegetatively?

8. What is seed dispersal?

9. Name three methods of seed dispersal.

10. Give two examples of wind-dispersed seeds.

11. Name two examples of water-dispersed seeds.

12. Give two examples of animal-dispersed seeds.

13. What structures help dandelion seeds in dispersal?

14. What adaptation do maple seeds have for dispersal?

15. How are cotton seeds adapted for wind dispersal?

16. What makes coconut seeds suitable for water dispersal?

17. Why do lotus seeds float on water?

18. How do animals disperse mango seeds?

19. What structures help Xanthium seeds stick to animals?

20. Name an animal that helps in seed dispersal by burial.

21. What is a zygote?

22. Where are male gametes found in flowering plants?

23. Where are female gametes located in plants?

24. What is another name for vegetative reproduction?

25. What are potato 'eyes'?

26. What type of modified stem is an onion bulb?

27. What is the common name for Bryophyllum?

28. Why is seed dispersal important for plants?

29. How does seed dispersal prevent overcrowding?

30. What is the advantage of colonizing new areas?

31. How does seed dispersal reduce disease spread?

32. How does seed dispersal promote genetic diversity?

33. What happens after fertilization in plants?

34. Name one advantage of vegetative reproduction.

35. Name one disadvantage of vegetative reproduction.

36. What is the main advantage of sexual reproduction?

37. Define pollination.

38. What develops from the ovule after fertilization?

39. What develops from the ovary after fertilization?

40. What is germination?

41. Name three factors required for seed germination.

42. What is the embryo in a seed?

43. What is seed dormancy?

44. In which group of plants does double fertilization occur?

45. What is the biological significance of reproduction?

46. How do hooked seeds disperse?

47. What attracts animals to fleshy fruits?

48. Why do wind-dispersed seeds need to be light?

49. What is the role of fibrous husk in coconut dispersal?

50. How does vegetative reproduction differ from sexual reproduction?

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SECTION C: Medium Answer Questions (25 × 2 = 50 Marks)

Answer the following questions in 2-3 sentences:

1. Explain the process of sexual reproduction in flowering plants.

2. Describe fertilization and its outcome in plants.

3. What is vegetative reproduction? Give two examples.

4. Explain how potato reproduces vegetatively.

5. Describe the vegetative reproduction method in onions.

6. How can carrots reproduce without seeds?

7. Explain the unique method of reproduction in Bryophyllum.

8. Define seed dispersal and explain why it is necessary.

9. Describe wind dispersal with two examples.

10. Explain water dispersal method with examples.

11. Describe how animals help in seed dispersal through fleshy fruits.

12. Explain seed dispersal through external attachment to animals.

13. How do animals help in seed dispersal by burial behavior?

14. Explain how seed dispersal prevents overcrowding in plants.

15. Describe how seed dispersal helps in colonization of new areas.

16. Explain the role of seed dispersal in reducing disease spread.

17. How does seed dispersal promote genetic diversity in plant populations?

18. Compare sexual and asexual reproduction in plants.

19. Explain the advantages and disadvantages of vegetative reproduction.

20. Describe the relationship between pollination and fertilization.

21. Explain the importance of gametes in plant reproduction.

22. Describe the adaptations of wind-dispersed seeds.

23. Explain the adaptations of water-dispersed seeds.

24. Describe the adaptations of animal-dispersed seeds.

25. Explain the ecological importance of seed dispersal.

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SECTION D: Long Answer Questions (15 × 3 = 100 Marks)

Answer the following questions in detail:

1. Describe sexual reproduction in flowering plants. Explain the processes of pollination and fertilization, and discuss their importance in plant life cycles.

2. Explain vegetative reproduction in detail. Describe three different methods (stem, root, and leaf propagation) with specific examples and explain when this type of reproduction is advantageous.

3. Discuss seed dispersal in detail. Explain the three main methods of seed dispersal (wind, water, and animals) with specific examples and structural adaptations for each method.

4. Explain the importance of seed dispersal for plant survival and ecosystem functioning. Discuss at least four different benefits with examples.

5. Compare and contrast sexual and asexual reproduction in plants. Discuss the advantages and disadvantages of each method and explain when each might be favored.

6. Describe the various adaptations that seeds have evolved for different dispersal methods. Give specific examples of how seed structure relates to dispersal mechanism.

7. Explain how vegetative reproduction occurs in potato, onion, carrot, and Bryophyllum. Discuss the plant parts involved and the conditions required for successful propagation.

8. Discuss the role of animals in seed dispersal. Explain the different ways animals can disperse seeds and the evolutionary relationships between plants and their animal dispersers.

9. Explain the process of fertilization in flowering plants and its consequences. Describe what happens to different flower parts after fertilization and how seeds and fruits develop.

10. Describe the ecological and evolutionary significance of different reproductive strategies in plants. Explain how environmental factors influence the choice between sexual and asexual reproduction.

11. Explain seed germination and the factors that affect it. Describe the process from seed dispersal to the establishment of a new plant and discuss seed dormancy.

12. Discuss the relationship between plant reproduction methods and plant survival strategies. Explain how different reproduction methods help plants cope with environmental challenges.

13. Describe the structural and functional adaptations of seeds for survival and dispersal. Explain how seed anatomy supports both protection of the embryo and successful dispersal.

14. Explain the concept of genetic diversity in plant populations. Discuss how different reproductive methods contribute to or limit genetic variation and why this is important for species survival.

15. Describe the complete life cycle of a flowering plant, emphasizing the reproductive phases. Explain the alternation between vegetative growth and reproductive phases and the factors that trigger reproduction.

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