Q1. What is the male reproductive organ in flowering plants?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: c) Anther
Explanation: The anther is the male reproductive organ in flowering plants, specifically located within the stamen. It contains pollen sacs where pollen grains are produced through the process of microsporogenesis. Pollen grains contain the male gametes (sperm cells) necessary for fertilization when they reach the female reproductive organs of the flower.
Q2. Which part of the flower receives pollen grains during pollination?
a) Ovary
b) Stigma
c) Anther
d) Petal
Show Answer
Correct Answer: b) Stigma
Explanation: The stigma is the receptive part of the female reproductive organ (pistil) in flowering plants. It is where pollen grains land during pollination. The stigma is often sticky or has specialized structures to facilitate the adhesion of pollen grains. Once pollen grains land on the stigma, they germinate and grow pollen tubes to reach the ovary for fertilization.
Q3. What is the structure that protects the developing flower bud?
a) Sepal
b) Petal
c) Stamen
d) Pistil
Show Answer
Correct Answer: a) Sepal
Explanation: Sepals are leaf-like structures that form the outermost whorl of the flower and collectively make up the calyx. Their primary function is to protect the developing flower bud during its initial stages. Sepals are usually green and can be modified in various ways depending on the plant species.
Q4. What is the female reproductive organ in flowering plants?
a) Ovary
b) Stigma
c) Anther
d) Style
Correct Answer: a) Ovary
Explanation: The ovary is the female reproductive organ in flowering plants, located within the pistil. It contains ovules, which are the structures that develop into seeds after fertilization. The ovary is where fertilization occurs when pollen grains deliver male gametes to the ovules, leading to the formation of seeds and fruits.
Q5. What is the term for the transfer of pollen grains from the anther to the stigma?
a) Fertilization
b) Germination
c) Pollination
d) Maturation
Show Answer
Correct Answer: c) Pollination
Explanation: Pollination is the process by which pollen grains are transferred from the anther (male reproductive organ) to the stigma (female reproductive organ) of a flower. This transfer can occur through various mechanisms, including wind, insects, birds, water, or self-pollination within the same flower.
Q6. What is the function of the style in a flower?
a) It produces pollen grains.
b) It receives pollen grains.
c) It protects the ovules.
d) It supports the stigma.
Show Answer
Correct Answer: d) It supports the stigma.
Explanation: The style is a slender, elongated structure in the pistil of a flower. Its main function is to support the stigma, which is often located at the top of the style. The style serves as a passageway for pollen tubes to grow from the stigma to the ovary, facilitating fertilization of the ovules.
Q7. Which part of the flower develops into the fruit?
a) Ovary
b) Stigma
c) Anther
d) Sepal
Show Answer
Correct Answer: a) Ovary
Explanation: The ovary is the part of the flower that develops into the fruit after fertilization. Once the ovules inside the ovary are fertilized by pollen grains, they develop into seeds. The ovary then undergoes further development and often enlarges to form the fruit, which protects and aids in the dispersal of the seeds.
Q8. What is the name of the process by which seeds are dispersed away from the parent plant?
a) Germination
b) Fertilization
c) Pollination
d) Seed dispersal
Show Answer
Correct Answer: d) Seed dispersal
Explanation: Seed dispersal is the process by which seeds are transported away from the parent plant to new locations where they can germinate and grow into new plants. This process helps prevent competition among offspring and increases the chances of plant survival and colonization of new habitats.
Q9. Which structure in a flower produces eggs?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: a) Ovary
Explanation: The ovary is the female reproductive organ in flowering plants and is responsible for producing eggs or female gametes. These eggs are contained within ovules, which are located within the ovary. After fertilization, the eggs develop into seeds within the ovules.
Q10. What is the purpose of the nectar produced by flowers?
a) To attract pollinators
b) To provide nutrients for the seeds
c) To protect the ovules
Show Answer
Correct Answer: a) To attract pollinators
Explanation: Nectar is a sweet, sugary fluid produced by flowers as a reward for pollinators, such as insects, birds, and bats. The primary purpose of nectar is to attract these pollinators to the flowers, thereby facilitating the transfer of pollen grains between flowers and promoting pollination, which is essential for plant reproduction.
Q11. What is the male reproductive organ in flowering plants?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: c) Anther
Explanation: The anther is the male reproductive organ in flowering plants, specifically located within the stamen. It contains pollen sacs where pollen grains are produced through the process of microsporogenesis. Pollen grains contain the male gametes (sperm cells) necessary for fertilization when they reach the female reproductive organs of the flower.
Q12. Which part of the flower receives pollen grains during pollination?
a) Ovary
b) Stigma
c) Anther
d) Petal
Show Answer
Correct Answer: b) Stigma
Explanation: The stigma is the receptive part of the female reproductive organ (pistil) in flowering plants. It is where pollen grains land during pollination. The stigma is often sticky or has specialized structures to facilitate the adhesion of pollen grains. Once pollen grains land on the stigma, they germinate and grow pollen tubes to reach the ovary for fertilization.
Q13. What is the structure that protects the developing flower bud?
a) Sepal
b) Petal
c) Stamen
d) Pistil
Show Answer
Correct Answer: a) Sepal
Explanation: Sepals are leaf-like structures that form the outermost whorl of the flower and collectively make up the calyx. Their primary function is to protect the developing flower bud during its initial stages. Sepals are usually green and can be modified in various ways depending on the plant species.
Q14. What is the female reproductive organ in flowering plants?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: a) Ovary
Explanation: The ovary is the female reproductive organ in flowering plants, located within the pistil. It contains ovules, which are the structures that develop into seeds after fertilization. The ovary is where fertilization occurs when pollen grains deliver male gametes to the ovules, leading to the formation of seeds and fruits.
Q15. What is the term for the transfer of pollen grains from the anther to the stigma?
a) Fertilization
b) Germination
c) Pollination
d) Maturation
Show Answer
Correct Answer: c) Pollination
Explanation: Pollination is the process by which pollen grains are transferred from the anther (male reproductive organ) to the stigma (female reproductive organ) of a flower. This transfer can occur through various mechanisms, including wind, insects, birds, water, or self-pollination within the same flower.
Q16. What is the function of the style in a flower?
a) It produces pollen grains.
b) It receives pollen grains.
c) It protects the ovules.
d) It supports the stigma.
Show Answer
Correct Answer: d) It supports the stigma.
Explanation: The style is a slender, elongated structure in the pistil of a flower. Its main function is to support the stigma, which is often located at the top of the style. The style serves as a passageway for pollen tubes to grow from the stigma to the ovary, facilitating fertilization of the ovules.
Q17. Which part of the flower develops into the fruit?
a) Ovary
b) Stigma
c) Anther
d) Sepal
Show Answer
Correct Answer: a) Ovary
Explanation: The ovary is the part of the flower that develops into the fruit after fertilization. Once the ovules inside the ovary are fertilized by pollen grains, they develop into seeds. The ovary then undergoes further development and often enlarges to form the fruit, which protects and aids in the dispersal of the seeds.
Q18. What is the name of the process by which seeds are dispersed away from the parent plant?
a) Germination
b) Fertilization
c) Pollination
d) Seed dispersal
Show Answer
Correct Answer: d) Seed dispersal
Explanation: Seed dispersal is the process by which seeds are transported away from the parent plant to new locations where they can germinate and grow into new plants. This process helps prevent competition among offspring and increases the chances of plant survival and colonization of new habitats.
Q19. Which structure in a flower produces eggs?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: a) Ovary
Explanation: The ovary is the female reproductive organ in flowering plants and is responsible for producing eggs or female gametes. These eggs are contained within ovules, which are located within the ovary. After fertilization, the eggs develop into seeds within the ovules.652
Q20. What is the purpose of the nectar produced by flowers?
a) To attract pollinators
b) To provide nutrients for the seeds
c) To protect the ovules
d) To support the stigma
Show Answer
Correct Answer: a) To attract pollinators
Explanation: Nectar is a sweet, sugary fluid produced by flowers as a reward for pollinators, such as insects, birds, and bats. The primary purpose of nectar is to attract these pollinators to the flowers, thereby facilitating the transfer of pollen grains between flowers and promoting pollination, which is essential for plant reproduction.
Q21. What is the structure that produces pollen grains in flowering plants?
a) Stigma
b) Ovary
c) Anther
d) Style
Show Answer
Correct Answer: c) Anther
Explanation: The anther is the male reproductive organ within the flower responsible for producing pollen grains. These pollen grains contain the male gametes necessary for fertilization. The anther is typically located at the tip of the stamen and consists of pollen sacs where pollen grains develop.
Q22. What is the female reproductive structure found in the pistil of a flower?
a) Stigma
b) Ovary
c) Anther
d) Style
Show Answer
Correct Answer: b) Ovary
Explanation: The ovary is the female reproductive structure found within the pistil of a flower. It contains ovules, which develop into seeds after fertilization. The ovary serves as the site of fertilization and subsequent seed development, often enlarging to form the fruit surrounding the seeds.
Q23. Which part of the flower plays a role in attracting pollinators with its vibrant colors and sweet nectar?
a) Sepal
b) Petal
c) Stamen
d) Pistil
Show Answer
Correct Answer: b) Petal
Explanation: Petals are often brightly colored and fragrant structures within a flower that play a role in attracting pollinators. Their vibrant colors and sweet nectar serve as visual and olfactory cues to entice insects, birds, or other animals to visit the flower for pollination.
Q24. What is the name of the process where pollen grains land on the stigma of a flower?
a) Germination
b) Pollination
c) Fertilization
d) Maturation
Show Answer
Correct Answer: b) Pollination
Explanation: Pollination is the process where pollen grains are transferred from the male reproductive organs of a flower to the stigma, which is part of the female reproductive organs. This transfer can occur through various agents such as wind, water, insects, or animals, facilitating the fertilization process.
Q25. What is the function of the style in a flower?
a) It produces pollen grains.
b) It receives pollen grains.
c) It protects the ovules.
d) It supports the stigma.
Show Answer
Correct Answer: d) It supports the stigma.
Explanation: The style is the slender, elongated part of the pistil in a flower. Its primary function is to support the stigma, which is located at its tip. Additionally, the style provides a pathway for pollen tubes to grow from the stigma to the ovary, facilitating fertilization of the ovules.
Q26. After fertilization, what part of the flower develops into the fruit?
a) Sepal
b) Petal
c) Ovary
d) Stigma
Show Answer
Correct Answer: c) Ovary
Explanation: The ovary, located at the base of the pistil in a flower, develops into the fruit after fertilization occurs. Fertilization involves the fusion of male and female gametes, resulting in the formation of seeds within the ovules contained within the ovary. The ovary undergoes further development and often enlarges to form the fruit, which protects and aids in seed dispersal.
Q27. What is the primary function of seeds?
a) To attract pollinators
b) To provide nutrients for the flower
c) To develop into new plants
d) To protect the ovules
Show Answer
Correct Answer: c) To develop into new plants
Explanation: Seeds are reproductive structures produced by flowering plants that contain embryonic plants within protective coverings. Their primary function is to facilitate the dispersal of offspring and ensure the survival and continuation of plant species. When conditions are favorable, seeds germinate and develop into new plants.
Q28. What term describes the process by which seeds are dispersed away from the parent plant?
a) Germination
b) Fertilization
c) Pollination
d) Seed dispersal
Show Answer
Correct Answer: d) Seed dispersal
Explanation: Seed dispersal is the mechanism by which seeds are transported away from the parent plant to new locations. This process reduces competition among offspring and allows plants to colonize new habitats. Seed dispersal can occur through various agents such as wind, water, animals, or mechanical forces.
Q29. What is the primary function of the stigma in a flower?
a) To produce pollen grains
b) To receive pollen grains
c) To protect the ovules
d) To support the style
Show Answer
Correct Answer: b) To receive pollen grains
Explanation: The stigma is the receptive part of the pistil in a flower and plays a crucial role in pollination. Its primary function is to receive pollen grains from pollinators or other sources. The stigma is often adapted to facilitate pollen adhesion, germination, and pollen tube growth, enabling fertilization to occur.
Q30. What is the name of the fluid produced by flowers to attract pollinators?
a) Nectar
b) Sap
c) Pollen
d) Resin
Show Answer
Correct Answer: a) Nectar
Explanation: Nectar is a sugary fluid produced by flowers as a reward for pollinators such as insects, birds, or bats. Its primary function is to attract pollinators to the flower, promoting pollination and ensuring successful reproduction. Nectar is often stored in specialized structures such as nectaries within the flower.
Q31. What is the male reproductive organ in flowering plants?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: c) Anther
Explanation: The anther is the male reproductive organ within the flower responsible for producing pollen grains. These pollen grains contain the male gametes necessary for fertilization. The anther is typically located at the tip of the stamen and consists of pollen sacs where pollen grains develop.
Q32. Which part of the flower plays a role in attracting pollinators with its vibrant colors and sweet nectar?
a) Sepal
b) Petal
c) Stamen
d) Pistil
Show Answer
Correct Answer: b) Petal
Explanation: Petals are often brightly colored and fragrant structures within a flower that play a role in attracting pollinators. Their vibrant colors and sweet nectar serve as visual and olfactory cues to entice insects, birds, or other animals to visit the flower for pollination.
Q33. What is the name of the process where pollen grains land on the stigma of a flower?
a) Germination
b) Pollination
c) Fertilization
d) Maturation
Show Answer
Correct Answer: b) Pollination
Explanation: Pollination is the process where pollen grains are transferred from the male reproductive organs of a flower to the stigma, which is part of the female reproductive organs. This transfer can occur through various agents such as wind, water, insects, or animals, facilitating the fertilization process.
Q34. What is the function of the style in a flower?
a) It produces pollen grains.
b) It receives pollen grains.
c) It protects the ovules.
d) It supports the stigma.
Show Answer
Correct Answer: d) It supports the stigma.
Explanation: The style is the slender, elongated part of the pistil in a flower. Its primary function is to support the stigma, which is located at its tip. Additionally, the style provides a pathway for pollen tubes to grow from the stigma to the ovary, facilitating fertilization of the ovules.
Q35. After fertilization, what part of the flower develops into the fruit?
a) Sepal
b) Petal
c) Ovary
d) Stigma
Show Answer
Correct Answer: c) Ovary
Explanation: The ovary, located at the base of the pistil in a flower, develops into the fruit after fertilization occurs. Fertilization involves the fusion of male and female gametes, resulting in the formation of seeds within the ovules contained within the ovary. The ovary undergoes further development and often enlarges to form the fruit, which protects and aids in seed dispersal.
Q36. What is the primary function of seeds?
a) To attract pollinators
b) To provide nutrients for the flower
c) To develop into new plants
d) To protect the ovules
Show Answer
Correct Answer: c) To develop into new plants
Explanation: Seeds are reproductive structures produced by flowering plants that contain embryonic plants within protective coverings. Their primary function is to facilitate the dispersal of offspring and ensure the survival and continuation of plant species. When conditions are favorable, seeds germinate and develop into new plants.
Q37. What term describes the process by which seeds are dispersed away from the parent plant?
a) Germination
b) Fertilization
c) Pollination
d) Seed dispersal
Show Answer
Correct Answer: d) Seed dispersal
Explanation: Seed dispersal is the mechanism by which seeds are transported away from the parent plant to new locations. This process reduces competition among offspring and allows plants to colonize new habitats. Seed dispersal can occur through various agents such as wind, water, animals, or mechanical forces.
Q38. What is the primary function of the stigma in a flower?
a) To produce pollen grains
b) To receive pollen grains
c) To protect the ovules
d) To support the style
Show Answer
Correct Answer: b) To receive pollen grains
Explanation: The stigma is the receptive part of the pistil in a flower and plays a crucial role in pollination. Its primary function is to receive pollen grains from pollinators or other sources. The stigma is often adapted to facilitate pollen adhesion, germination, and pollen tube growth, enabling fertilization to occur.
Q39. What is the name of the fluid produced by flowers to attract pollinators?
a) Nectar
b) Sap
c) Pollen
d) Resin
Show Answer
Correct Answer: a) Nectar
Explanation: Nectar is a sugary fluid produced by flowers as a reward for pollinators such as insects, birds, or bats. Its primary function is to attract pollinators to the flower, promoting pollination and ensuring successful reproduction. Nectar is often stored in specialized structures such as nectaries within the flower.
Q40. What is the male reproductive organ in flowering plants?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: c) Anther
Explanation: The anther is the male reproductive organ within the flower responsible for producing pollen grains. These pollen grains contain the male gametes necessary for fertilization. The anther is typically located at the tip of the stamen and consists of pollen sacs where pollen grains develop.
Q41. Which part of the flower plays a role in attracting pollinators with its vibrant colors and sweet nectar?
a) Sepal
b) Petal
c) Stamen
d) Pistil
Show Answer
Correct Answer: b) Petal
Explanation: Petals are often brightly colored and fragrant structures within a flower that play a role in attracting pollinators. Their vibrant colors and sweet nectar serve as visual and olfactory cues to entice insects, birds, or other animals to visit the flower for pollination.
Q42. What is the name of the process where pollen grains land on the stigma of a flower?
a) Germination
b) Pollination
c) Fertilization
d) Maturation
Show Answer
Correct Answer: b) Pollination
Explanation: Pollination is the process where pollen grains are transferred from the male reproductive organs of a flower to the stigma, which is part of the female reproductive organs. This transfer can occur through various agents such as wind, water, insects, or animals, facilitating the fertilization process.
Q43. What is the function of the style in a flower?
a) It produces pollen grains.
b) It receives pollen grains.
c) It protects the ovules.
d) It supports the stigma.
Show Answer
Correct Answer: d) It supports the stigma.
Explanation: The style is the slender, elongated part of the pistil in a flower. Its primary function is to support the stigma, which is located at its tip. Additionally, the style provides a pathway for pollen tubes to grow from the stigma to the ovary, facilitating fertilization of the ovules.
Q44. After fertilization, what part of the flower develops into the fruit?
a) Sepal
b) Petal
c) Ovary
d) Stigma
Show Answer
Correct Answer: c) Ovary
Explanation: The ovary, located at the base of the pistil in a flower, develops into the fruit after fertilization occurs. Fertilization involves the fusion of male and female gametes, resulting in the formation of seeds within the ovules contained within the ovary. The ovary undergoes further development and often enlarges to form the fruit, which protects and aids in seed dispersal.
Q45. What is the primary function of seeds?
a) To attract pollinators
b) To provide nutrients for the flower
c) To develop into new plants
d) To protect the ovules
Show Answer
Correct Answer: c) To develop into new plants
Explanation: Seeds are reproductive structures produced by flowering plants that contain embryonic plants within protective coverings. Their primary function is to facilitate the dispersal of offspring and ensure the survival and continuation of plant species. When conditions are favorable, seeds germinate and develop into new plants.
Q46. What term describes the process by which seeds are dispersed away from the parent plant?
a) Germination
b) Fertilization
c) Pollination
d) Seed dispersal
Show Answer
Correct Answer: d) Seed dispersal
Explanation: Seed dispersal is the mechanism by which seeds are transported away from the parent plant to new locations. This process reduces competition among offspring and allows plants to colonize new habitats. Seed dispersal can occur through various agents such as wind, water, animals, or mechanical forces.
Q47. What is the primary function of the stigma in a flower?
a) To produce pollen grains
b) To receive pollen grains
c) To protect the ovules
d) To support the style
Show Answer
Correct Answer: b) To receive pollen grains
Explanation: The stigma is the receptive part of the pistil in a flower and plays a crucial role in pollination. Its primary function is to receive pollen grains from pollinators or other sources. The stigma is often adapted to facilitate pollen adhesion, germination, and pollen tube growth, enabling fertilization to occur.
Q48. What is the name of the fluid produced by flowers to attract pollinators?
a) Nectar
b) Sap
c) Pollen
d) Resin
Show Answer
Correct Answer: a) Nectar
Explanation: Nectar is a sugary fluid produced by flowers as a reward for pollinators such as insects, birds, or bats. Its primary function is to attract pollinators to the flower, promoting pollination and ensuring successful reproduction. Nectar is often stored in specialized structures such as nectaries within the flower.
Q49. What is the male reproductive organ in flowering plants?
a) Ovary
b) Stigma
c) Anther
d) Style
Show Answer
Correct Answer: c) Anther
Explanation: The anther is the male reproductive organ within the flower responsible for producing pollen grains. These pollen grains contain the male gametes necessary for fertilization. The anther is typically located at the tip of the stamen and consists of pollen sacs where pollen grains develop.
Q50. Which part of the flower plays a role in attracting pollinators with its vibrant colors and sweet nectar?
a) Sepal
b) Petal
c) Stamen
d) Pistil
Show Answer
Correct Answer: b) Petal
Explanation: Petals are often brightly colored and fragrant structures within a flower that play a role in attracting pollinators. Their vibrant colors and sweet nectar serve as visual and olfactory cues to entice insects, birds, or other animals to visit the flower for pollination.