Here are some multiple-choice questions (MCQs) on the topic "Morphology of Flowering Plants" for CBSE Class 12, with the answers provided at the end:
1. Which of the following is not a type of inflorescence?
a) Spike
b) Raceme
c) Panicle
d) Tendril
2. The ovary that consists of a single carpel is termed as:
a) Syncarpous
b) Apocarpous
c) Monocarpous
d) Polycarpous
3. The part of the flower that develops into a fruit is:
a) Stigma
b) Style
c) Ovary
d) Anther
4. Which of the following is a type of placentation where ovules are attached along the central axis of the ovary?
a) Marginal
b) Axile
c) Parietal
d) Basal
5. In which of the following types of inflorescence are the flowers borne on a central stem, and the pedicels are of varying lengths?
a) Spike
b) Raceme
c) Umbel
d) Corymb
6. A flower that contains both stamens and carpels is referred to as:
a) Complete
b) Incomplete
c) Bisexual
d) Unisexual
7. Which of the following is an example of a plant with a hypogynous flower?
a) Rose
b) Tomato
c) Lily
d) Pea
8. The term used to describe a flower with both male and female reproductive organs is:
a) Monoecious
b) Dioecious
c) Bisexual
d) Unisexual
9. In which type of inflorescence are all the flowers sessile and borne on a common receptacle?
a) Panicle
b) Head
c) Spike
d) Raceme
10. The outermost whorl of a flower is composed of:
a) Petals
b) Sepals
c) Stamens
d) Carpels
11. A flower with both the calyx and corolla is described as:
a) Incomplete
b) Complete
c) Simple
d) Compound
12. In which type of ovary position does the ovary sit above the other floral parts?
a) Superior
b) Inferior
c) Half-inferior
d) Adnate
13. Which of the following is true about a flower with a perigynous arrangement?
a) The ovary is superior.
b) The ovary is inferior.
c) The ovary is half-inferior.
d) The ovary is surrounded by other floral parts.
14. The term for a flower with both petals and sepals is:
a) Asexual
b) Bisexual
c) Staminate
d) Complete
15. The stalk that attaches the flower to the plant is called the:
a) Peduncle
b) Pedicel
c) Receptacle
d) Sepal
16. Which of the following describes a flower with only one type of perianth?
a) Dichlamydeous
b) Monoclamydeous
c) Triclamydeous
d) Polyclamydeous
17. The part of the flower that protects the bud before it opens is:
a) Petal
b) Sepal
c) Stigma
d) Style
18. In which type of placentation are ovules attached to the base of the ovary?
a) Axile
b) Marginal
c) Basal
d) Parietal
19. A flower that lacks either stamens or carpels is:
a) Complete
b) Incomplete
c) Perfect
d) Imperfect
20. Which of the following is not a component of the pistil?
a) Stigma
b) Style
c) Anther
d) Ovary
21. The flower of which plant is characterized by having a superior ovary, a hypogynous flower arrangement, and a bilaterally symmetrical corolla?
a) Lily
b) Orchid
c) Rose
d) Pea
22. Which of the following types of fruit is developed from a single ovary of a flower?
a) Aggregate fruit
b) Multiple fruit
c) Simple fruit
d) Composite fruit
23. In a flower, the structure responsible for producing pollen is the:
a) Style
b) Stigma
c) Anther
d) Ovary
24. The modified leaf structures in a flower that are often brightly colored and attract pollinators are called:
a) Sepals
b) Petals
c) Stamens
d) Carpels
25. Which type of placentation is found in a flower with multiple carpels, each having ovules attached to the sides of the ovary?
a) Basal
b) Marginal
c) Axile
d) Parietal
26. A flower with a single carpel and multiple ovules is:
a) Apocarpous
b) Syncarpous
c) Monocarpous
d) Polycarpous
27. The structure of a flower where the ovules are attached directly to the central axis is known as:
a) Basal placentation
b) Marginal placentation
c) Axile placentation
d) Parietal placentation
28. Which of the following types of inflorescence is characterized by flowers arranged in a dense head?
a) Corymb
b) Umbel
c) Spike
d) Head
29. The part of the flower that usually contains nectar and attracts pollinators is the:
a) Petal
b) Sepal
c) Stigma
d) Ovary
30. Which structure in the flower is responsible for the development of the seed after fertilization?
a) Stigma
b) Style
c) Ovary
d) Anther
31. A flower with a complete set of whorls (sepals, petals, stamens, and carpels) is:
a) Perfect
b) Complete
c) Incomplete
d) Imperfect
32. Which type of fruit is formed from a cluster of flowers, each with its own ovary?
a) Simple fruit
b) Aggregate fruit
c) Multiple fruit
d) Compound fruit
33. In which type of inflorescence are the flowers arranged on a central axis, with the oldest flowers at the top and the youngest at the bottom?
a) Raceme
b) Panicle
c) Spike
d) Corymb
34. The floral part that typically develops into the seed is:
a) Stigma
b) Style
c) Ovary
d) Anther
35. In a flower with a hypogynous arrangement, the ovary is:
a) Superior
b) Inferior
c) Half-inferior
d) Adnate
36. Which type of flower has its stamens and carpels in separate flowers on the same plant?
a) Dioecious
b) Monoecious
c) Perfect
d) Imperfect
37. The green, leaf-like structures that protect the flower bud are called:
a) Petals
b) Sepals
c) Carpels
d) Stamens
38. The structure that supports the flower and contains the receptacle is the:
a) Peduncle
b) Pedicel
c) Style
d) Ovary
39. Which term describes a flower with only one type of perianth, such as only petals or only sepals?
a) Monoclamydeous
b) Diclamydeous
c) Triclamydeous
d) Polyclamydeous
40. The arrangement of sepals and petals in a flower is referred to as:
a) Phyllotaxy
b) Placentation
c) Inflorescence
d) Symmetry
41. Which type of fruit is formed from a cluster of flowers, each with its own ovary?
a) Aggregate fruit
b) Multiple fruit
c) Simple fruit
d) Composite fruit
42. A flower that is symmetrical along one plane is described as:
a) Bilateral
b) Radial
c) Asymmetrical
d) Complete
43. Which structure in a flower is responsible for receiving pollen during pollination?
a) Style
b) Ovary
c) Stigma
d) Anther
44. The type of inflorescence in which all flowers are born on a single central axis is called:
a) Corymb
b) Head
c) Raceme
d) Panicle
45. Which of the following refers to the arrangement of flowers in an inflorescence?
a) Symmetry
b) Phyllotaxy
c) Placentation
d) Inflorescence
46. A flower with petals fused into a tube-like structure is described as:
a) Actinomorphic
b) Zygomorphic
c) Gamopetalous
d) Polysepalous
47. The part of the flower that contains the ovules is the:
a) Style
b) Ovary
c) Stigma
d) Anther
48. A flower with both stamens and carpels is:
a) Imperfect
b) Complete
c) Incomplete
d) Perfect
49. Which type of fruit is formed from the ovaries of multiple flowers?
a) Aggregate fruit
b) Simple fruit
c) Multiple fruit
d) Composite fruit
50. The floral part that is involved in reproduction by producing pollen is the:
a) Pistil
b) Sepal
c) Petal
d) Stamen
Answers:
1. d) Tendril
2. c) Monocarpous
3. c) Ovary
4. b) Axile
5. d) Corymb
6. c) Bisexual
7. a) Rose
8. c) Bisexual
9. b) Head
10. b) Sepals
11. b) Complete
12. a) Superior
13. d) The ovary is surrounded by other floral parts.
14. d) Complete
15. a) Peduncle
16. b) Monoclamydeous
17. b) Sepal
18. c) Basal
19. b) Incomplete
20. c) Anther
21. d) Pea
22. c) Simple fruit
23. c) Anther
24. b) Petals
25. d) Parietal
26. c) Monocarpous
27. c) Axile placentation
28. d) Head
29. a) Petal
30. c) Ovary
31. b) Complete
32. b) Aggregate fruit
33. a) Raceme
34. c) Ovary
35. a) Superior
36. b) Monoecious
37. b) Sepals
38. a) Peduncle
39. a) Monoclamydeous
40. a) Phyllotaxy
41. a) Aggregate fruit
42. a) Bilateral
43. c) Stigma
44. b) Head
45. d) Inflorescence
46. c) Gamopetalous
47. b) Ovary
48. d) Perfect
49. c) Multiple fruit
50. d) Stamen
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