100 objective-type questions for Class VI Science, covering the chapter on flowers, their parts, and related topics:

1. Flower and Its Parts

1. Which part of the plant develops into a flower?
   a) Root
   b) Stem
   c) Bud
   d) Leaf

2. The main function of a flower is:
   a) Photosynthesis
   b) Reproduction
   c) Water transport
   d) Nutrient absorption

3. Which of the following is NOT a part of a flower?
   a) Calyx
   b) Corolla
   c) Stigma
   d) Petiole

4. The outermost whorl of a flower is called:
   a) Corolla
   b) Calyx
   c) Androecium
   d) Gynoecium

5. The colorful part of the flower is:
   a) Sepals
   b) Petals
   c) Ovary
   d) Roots

6. The female reproductive part of a flower is called:
   a) Androecium
   b) Gynoecium
   c) Corolla
   d) Calyx

7. The male reproductive organ of a flower is called:
   a) Sepals
   b) Petals
   c) Androecium
   d) Ovary

8. The function of the sepals is to:
   a) Protect the flower bud
   b) Attract pollinators
   c) Store food
   d) Produce pollen

9. Which part of the flower produces pollen grains?
   a) Ovary
   b) Anther
   c) Stigma
   d) Style

10. The sticky part of the flower that receives pollen is called:
    a) Ovary
    b) Style
    c) Stigma
    d) Anther

2. Types of Flowers

11. A flower that has both male and female reproductive organs is called:
    a) Unisexual
    b) Bisexual
    c) Asexual
    d) Incomplete

12. A flower that lacks either stamens or pistils is called:
    a) Complete flower
    b) Bisexual flower
    c) Unisexual flower
    d) Incomplete flower

13. Which of the following is a unisexual flower?
    a) Rose
    b) Sunflower
    c) Papaya
    d) Hibiscus

14. The type of flower that contains all four whorls is called:
    a) Complete flower
    b) Incomplete flower
    c) Bisexual flower
    d) Asexual flower

15. Which of the following is a complete flower?
    a) Rose
    b) Maize
    c) Papaya
    d) Coconut

3. Pollination

16. Pollination is the transfer of pollen from:
    a) Stigma to ovary
    b) Stigma to style
    c) Anther to stigma
    d) Anther to ovule

17. Pollination occurs in:
    a) Leaves
    b) Flowers
    c) Roots
    d) Fruits

18. The two types of pollination are:
    a) Self and cross-pollination
    b) Artificial and natural pollination
    c) Male and female pollination
    d) Asexual and sexual pollination

19. Which of the following is an agent of pollination?
    a) Wind
    b) Water
    c) Insects
    d) All of the above

20. The pollination process carried out by insects is called:
    a) Hydrophily
    b) Anemophily
    c) Entomophily
    d) Zoophily

     

    Objective Questions with Answers for Class VI Science - Flowers and Their Parts

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    Chapter: The Flower

    1. Introduction to Flowers

    Flowers are the reproductive structures of plants. They help in reproduction by producing seeds.

21. What is the main reproductive part of a plant?
    a) Leaf
    b) Stem
    c) Flower
    d) Root
    Ans: c) Flower

    Explanation: The flower contains male and female reproductive organs that help in the production of seeds.

22. Which part of the flower protects the bud?
    a) Petal
    b) Sepal
    c) Stigma
    d) Anther
    Ans: b) Sepal

    Explanation: Sepals form the outermost whorl of the flower and protect the developing bud.

23. What is the main function of a flower?
    a) Photosynthesis
    b) Reproduction
    c) Water absorption
    d) Transport of food
    Ans: b) Reproduction

    Explanation: Flowers produce gametes that fuse during fertilization to form seeds, ensuring the survival of the species.

24. Which of the following is NOT a part of a flower?
    a) Calyx
    b) Corolla
    c) Root
    d) Androecium
    Ans: c) Root

    Explanation: Roots are part of the plant but not of the flower. They help in water and nutrient absorption.

25. The part of the flower that is usually colorful and attracts insects is called:
    a) Sepal
    b) Petal
    c) Stamen
    d) Ovary
    Ans: b) Petal

    Explanation: Petals are brightly colored to attract pollinators like bees and butterflies.

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2. Calyx and Corolla

Calyx and corolla are two major floral whorls. The calyx consists of sepals that protect the flower, while the corolla consists of petals that attract pollinators.

6. Calyx is made up of:
   a) Petals
   b) Sepals
   c) Stamen
   d) Ovary
   Ans: b) Sepals

7. Which part of the flower protects it in the bud stage?
   a) Corolla
   b) Calyx
   c) Androecium
   d) Gynoecium
   Ans: b) Calyx

8. Petals collectively form which part of the flower?
   a) Calyx
   b) Corolla
   c) Androecium
   d) Gynoecium
   Ans: b) Corolla

9. The function of petals is to:
   a) Produce pollen
   b) Protect the ovary
   c) Attract pollinators
   d) Absorb water
   Ans: c) Attract pollinators

10. Which part of the flower is responsible for pollination?
    a) Corolla
    b) Calyx
    c) Stamen
    d) Ovary
    Ans: c) Stamen

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3. Androecium and Gynoecium

The androecium and gynoecium are the reproductive organs of a flower. The androecium consists of stamens (anther and filament) and produces pollen. The gynoecium consists of the ovary, style, and stigma, where fertilization occurs.

11. What is the male reproductive part of a flower called?
    a) Calyx
    b) Corolla
    c) Androecium
    d) Gynoecium
    Ans: c) Androecium

12. The main parts of androecium are:
    a) Filament and stigma
    b) Stamen and ovary
    c) Anther and filament
    d) Style and ovary
    Ans: c) Anther and filament

13. Which part of the stamen produces pollen?
    a) Ovary
    b) Style
    c) Anther
    d) Filament
    Ans: c) Anther

14. The female reproductive part of the flower is called:
    a) Corolla
    b) Gynoecium
    c) Androecium
    d) Calyx
    Ans: b) Gynoecium

15. Which part of the gynoecium contains ovules?
    a) Ovary
    b) Anther
    c) Stigma
    d) Filament
    Ans: a) Ovary

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4. Bisexual and Unisexual Flowers

Flowers can be classified based on the presence of reproductive structures. Bisexual flowers contain both stamens and carpels, while unisexual flowers contain only one reproductive structure.

16. Flowers that have both male and female reproductive parts are called:
    a) Unisexual flowers
    b) Bisexual flowers
    c) Asexual flowers
    d) None of the above
    Ans: b) Bisexual flowers

17. Which of the following is a unisexual flower?
    a) Hibiscus
    b) Sunflower
    c) Papaya
    d) Rose
    Ans: c) Papaya

18. A flower that contains only stamens or only carpels is called:
    a) Bisexual flower
    b) Unisexual flower
    c) Asexual flower
    d) None of the above
    Ans: b) Unisexual flower

19. Which of the following is an example of a bisexual flower?
    a) Pumpkin
    b) Coconut
    c) Rose
    d) Papaya
    Ans: c) Rose

20. The male flower of a unisexual plant produces:
    a) Ovules
    b) Pollen grains
    c) Seeds
    d) Fruits
    Ans: b) Pollen grains

16.  

     

     

4. Fertilization

21. Fertilization in flowers occurs when:
    a) The pollen reaches the ovary
    b) The pollen tube bursts
    c) The pollen fuses with the ovule
    d) The flower wilts

22. After fertilization, the ovule develops into:
    a) A flower
    b) A seed
    c) A bud
    d) A root

23. The part of the flower that develops into a fruit is:
    a) Petals
    b) Ovary
    c) Stigma
    d) Sepals

24. Fertilization occurs inside the:
    a) Anther
    b) Ovule
    c) Style
    d) Stigma

25. The tube that carries pollen to the ovule is called:
    a) Style
    b) Pollen tube
    c) Ovary
    d) Filament

5. Fruit and Its Parts

26. The outer protective covering of the fruit is called:
    a) Pericarp
    b) Seed coat
    c) Endosperm
    d) Ovule

27. Which of the following is NOT a part of a fruit?
    a) Pericarp
    b) Endocarp
    c) Ovary
    d) Stigma

28. The part of the fruit that protects the seed is called:
    a) Pericarp
    b) Endosperm
    c) Anther
    d) Stigma

29. The edible part of an apple is:
    a) Endocarp
    b) Mesocarp
    c) Seed coat
    d) Ovule

30. The seed is formed inside the:
    a) Petals
    b) Ovary
    c) Sepals
    d) Stigma

    Fertilization

31. Fertilization in flowers occurs when:
    c) The pollen fuses with the ovule

32. After fertilization, the ovule develops into:
    b) A seed

33. The part of the flower that develops into a fruit is:
    b) Ovary

34. Fertilization occurs inside the:
    b) Ovule

35. The tube that carries pollen to the ovule is called:
    b) Pollen tube

Fruit and Its Parts

6. The outer protective covering of the fruit is called:
   a) Pericarp

7. Which of the following is NOT a part of a fruit?
   d) Stigma

8. The part of the fruit that protects the seed is called:
   a) Pericarp

9. The edible part of an apple is:
   b) Mesocarp

10. The seed is formed inside the:
    b) Ovary

26.  

     

6. Agents of Pollination

31. Pollination by wind is called:
    a) Hydrophily
    b) Anemophily
    c) Entomophily
    d) Zoophily

32. Pollination by water occurs mostly in:
    a) Rose plants
    b) Coconut trees
    c) Aquatic plants
    d) Cactus

33. Pollination by birds is known as:
    a) Anemophily
    b) Hydrophily
    c) Ornithophily
    d) Entomophily

34. Pollination by bats is called:
    a) Chiropterophily
    b) Hydrophily
    c) Zoophily
    d) Anemophily

35. Bees and butterflies help in:
    a) Hydrophily
    b) Zoophily
    c) Entomophily
    d) Anemophily

7. Miscellaneous

36. The main function of fruits is to:
    a) Produce flowers
    b) Store food
    c) Protect and disperse seeds
    d) Carry out photosynthesis

37. The sweet part of the fruit is:
    a) Endocarp
    b) Pericarp
    c) Mesocarp
    d) Seed coat

38. Which fruit has a hard outer covering?
    a) Mango
    b) Apple
    c) Coconut
    d) Banana

39. The seed coat protects the:
    a) Pollen
    b) Ovule
    c) Embryo
    d) Anther

40. Which of the following helps in seed dispersal?
    a) Wind
    b) Water
    c) Animals
    d) All of the above

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1-50: Basic Concepts of Flowers and Reproduction

1. The reproductive part of a plant is:
   Answer: c) Flower

2. The male reproductive part of a flower is called:
   Answer: a) Stamen

3. The female reproductive part of a flower is called:
   Answer: b) Pistil

4. The process of transferring pollen from an anther to a stigma is called:
   Answer: d) Pollination

5. The colorful part of a flower that attracts insects is called:
   Answer: c) Petal

6. The outermost whorl of a flower is called:
   Answer: a) Calyx

7. Which part of the flower protects the developing bud?
   Answer: b) Sepals

8. The function of the stigma in a flower is:
   Answer: b) Trap pollen grains

9. The ovary of a flower develops into:
   Answer: b) Fruit

10. Which of the following is a unisexual flower?
    Answer: d) Papaya

11. A flower that has both male and female reproductive organs is called:
    Answer: a) Bisexual flower

12. Which part of a flower contains ovules?
    Answer: b) Ovary

13. Pollination occurs with the help of:
    Answer: d) All of these

14. The process in which pollen grains from the same flower reach the stigma is called:
    Answer: b) Self-pollination

15. A bisexual flower contains:
    Answer: d) Both stamens and carpels

16. The male reproductive organ in a flower produces:
    Answer: b) Pollen grains

17. The ovule develops into a:
    Answer: c) Seed

18. The transfer of pollen grains between different flowers is called:
    Answer: b) Cross-pollination

19. Pollination by insects is known as:
    Answer: c) Entomophily

20. Which part of a flower turns into fruit?
    Answer: a) Ovary

21. Which part of a flower develops into a seed?
    Answer: b) Ovule

22. The function of the filament in a flower is:
    Answer: b) Support the anther

23. Which of the following is NOT a mode of pollination?
    Answer: c) Chemical pollination

24. The transfer of pollen grains by wind is called:
    Answer: a) Anemophily

25. Which of the following plants is pollinated by water?
    Answer: d) Hydrilla

26. A flower that contains all four floral whorls is called a:
    Answer: a) Complete flower

27. The part of the flower that produces pollen grains is called:
    Answer: a) Anther

28. The edible part of an apple is:
    Answer: b) Thalamus

29. In a hibiscus flower, the number of stamens is:
    Answer: d) Many

30. The function of the endosperm in a seed is:
    Answer: b) Store food for the embryo

31. The main function of the pericarp in a fruit is:
    Answer: a) Protect the seed

32. The edible part of a coconut is:
    Answer: c) Endosperm

33. Fruits that develop without fertilization are called:
    Answer: b) Parthenocarpic fruits

34. The dispersal of seeds by animals is called:
    Answer: d) Zoochory

35. The dispersal of seeds by wind is called:
    Answer: a) Anemochory

36. Which part of a fruit stores food?
    Answer: c) Mesocarp

37. A dry fruit that does not burst open is called:
    Answer: d) Nut

38. The part of the seed that grows into a new plant is the:
    Answer: b) Embryo

39. The function of sepals is to:
    Answer: b) Protect the flower bud

40. The sticky part of the pistil that receives pollen grains is:
    Answer: c) Stigma

41. The part of the plant that absorbs water and minerals is:
    Answer: c) Root

42. The function of petals in a flower is:
    Answer: c) Attract pollinators

43. The fusion of male and female gametes is called:
    Answer: d) Fertilization

44. Fruits that do not open at maturity are called:
    Answer: c) Indehiscent fruits

45. The edible part of a mango is the:
    Answer: b) Mesocarp

46. A fruit that is dispersed by water is:
    Answer: d) Coconut

47. The part of a fruit that protects the seed is called:
    Answer: a) Pericarp

48. A fruit that develops without fertilization is called:
    Answer: b) Parthenocarpic fruit

49. The male gamete in plants is found in:
    Answer: b) Pollen grains

50. Which of the following is a function of flowers?

    
    Answer: d) Reproduction

     

 1-50: Basic Concepts of Flowers and Reproduction

The reproductive part of a plant is:Answer: c) Flower

The male reproductive part of a flower is called:Answer: a) Stamen

The female reproductive part of a flower is called:Answer: b) Pistil

The process of transferring pollen from an anther to a stigma is called:Answer: d) Pollination

The colorful part of a flower that attracts insects is called:Answer: c) Petal

The outermost whorl of a flower is called:Answer: a) Calyx

Which part of the flower protects the developing bud?Answer: b) Sepals

The function of the stigma in a flower is:Answer: b) Trap pollen grains

The ovary of a flower develops into:Answer: b) Fruit

Which of the following is a unisexual flower?Answer: d) Papaya

A flower that has both male and female reproductive organs is called:Answer: a) Bisexual flower

Which part of a flower contains ovules?Answer: b) Ovary

Pollination occurs with the help of:Answer: d) All of these

The process in which pollen grains from the same flower reach the stigma is called:Answer: b) Self-pollination

A bisexual flower contains:Answer: d) Both stamens and carpels

The male reproductive organ in a flower produces:Answer: b) Pollen grains

The ovule develops into a:Answer: c) Seed

The transfer of pollen grains between different flowers is called:Answer: b) Cross-pollination

Pollination by insects is known as:Answer: c) Entomophily

Which part of a flower turns into fruit?Answer: a) Ovary

Which part of a flower develops into a seed?Answer: b) Ovule

The function of the filament in a flower is:Answer: b) Support the anther

Which of the following is NOT a mode of pollination?Answer: c) Chemical pollination

The transfer of pollen grains by wind is called:Answer: a) Anemophily

Which of the following plants is pollinated by water?Answer: d) Hydrilla

A flower that contains all four floral whorls is called a:Answer: a) Complete flower

The part of the flower that produces pollen grains is called:Answer: a) Anther

The edible part of an apple is:Answer: b) Thalamus

In a hibiscus flower, the number of stamens is:Answer: d) Many

The function of the endosperm in a seed is:Answer: b) Store food for the embryo