SEEP PAHUJA
SEEP.PAHUJA
SEEP PAHUJA BIOLOGY OFFICIAL
Revision Test
NEET 2025
1. Which of the following represents the female gametophyte in angiosperms?
a) Ovule
b) Embryo sac
c) Nucellus
d) Endosperm
2. Pollen grains are shed at which stage in most angiosperms?
a) 1-celled stage
b) 2-celled stage
c) 3-celled stage
d) 4-celled stage
3. Microsporogenesis occurs in the:
a) Ovule
b) Pollen sac
c) Endothecium
d) Stigma
4. The cell wall of pollen grains is made up of:
a) Sporopollenin and cellulose
b) Sporopollenin and pectin
c) Sporopollenin only
d) Cellulose and lignin
5. Which part of the ovule forms the seed coat after fertilization?
a) Funicle
b) Integuments
c) Nucellus
d) Chalaza
6. The mature ovule is attached to the placenta by:
a) Hilum
b) Funicle
c) Micropyle
d) Nucellus
7. In which type of pollination does the pollen grain of one flower land on the stigma of another
flower on the same plant?
a) Autogamy
b) Xenogamy
c) Geitonogamy
d) Cleistogamy
8. What is the role of the tapetum in the anther?
a) Protection of pollen grains
b) Nourishment of developing pollen grains
c) Site of meiosis
d) Formation of sporopollenin
9. The product of double fertilization is:
a) Embryo and seed coat
b) Embryo and endosperm
c) Endosperm and pericarp
d) Embryo and fruit
10. In an embryo sac, how many nuclei are haploid?
a) 2
b) 4
c) 6
d) 8
11. What is the function of the generative cell in pollen?
a) Fertilizing the ovule
b) Producing the pollen tube
c) Dividing to form two male gametes
d) Producing endosperm
12. The primary endosperm nucleus is:
a) Haploid
b) Diploid
c) Triploid
d) Tetraploid
13. Which structure of the flower becomes the fruit?
a) Ovule
b) Ovary
c) Nucellus
d) Stigma
14. Perisperm is derived from:
a) Nucellus
b) Integuments
c) Antipodals
d) Secondary nucleus
15. Cleistogamous flowers are characterized by:
a) Absence of petals
b) Lack of cross-pollination
c) Closed buds for self-pollination
d) Pollination by insects
16. The most resistant biological material known is:
a) Sporopollenin
b) Lignin
c) Suberin
d) Cutin
17. Ovules attached to the central axis in a syncarpous ovary represent:
a) Marginal placentation
b) Axile placentation
c) Basal placentation
d) Free central placentation
18. In a dicotyledonous seed, food is stored in:
a) Cotyledons
b) Endosperm
c) Perisperm
d) Nucellus
19. In which type of flowers does autogamy occur?
a) Dioecious flowers
b) Cleistogamous flowers
c) Incomplete flowers
d) Protandrous flowers
20. In angiosperms, functional megaspore formation involves:
a) Mitosis only
b) Meiosis followed by mitosis
c) Meiosis only
d) Fertilization
21. Pollen-pistil interaction refers to:
a) Growth of the ovule
b) Fertilization process
c) Recognition of compatible pollen
d) Formation of the pollen tube
22. The most common type of embryo sac in angiosperms is:
a) 4-nucleate
b) 8-nucleate
c) 16-nucleate
d) 32-nucleate
23. Which of the following is pollinated by bats?
a) Vallisneria
b) Yucca
c) Mango
d) Bauhinia
24. The fusion of male gametes with polar nuclei is called:
a) Syngamy
b) Triple fusion
c) Pollination
d) Germination
25. Wind-pollinated flowers are generally:
a) Small and colorful
b) Large and fragrant
c) Small with light pollen
d) Large with sticky pollen
26. The endosperm in angiosperms is formed by:
a) Fertilization of synergids
b) Fertilization of egg cell
c) Fusion of male gamete with the central cell
d) Division of the antipodals
27. The micropyle of an ovule allows:
a) Entry of pollen tube
b) Transfer of nutrients
c) Development of the seed coat
d) Attachment of the funicle
28. What is the fate of the antipodal cells after fertilization?
a) Form the embryo
b) Nourish the zygote
c) Degenerate
d) Form the endosperm
29. Which hormone triggers flowering in long-day plants?
a) Auxin
b) Cytokinin
c) Florigen
d) Gibberellin
30. A seed coat is formed from:
a) Ovule
b) Integuments
c) Nucellus
d) Funicle
31. A mature pollen grain produces:
a) Two male gametes and a vegetative cell
b) One male gamete and a tube cell
c) Two male gametes and a tube nucleus
d) Three male gametes
32. What is the chromosome number in the endosperm of an angiosperm?
a) n
b) 2n
c) 3n
d) 4n
33. The entry of pollen tube through the micropyle is termed as:
a) Porogamy
b) Mesogamy
c) Chalazogamy
d) Cleistogamy
34. Flowers that are unisexual are termed as:
a) Bisexual
b) Dioecious
c) Monoecious
d) Gamopetalous
35. The ovule is also referred to as a/an:
a) Seed coat
b) Integumented megasporangium
c) Megasporophyll
d) Microsporangium
36. Which of the following plants show wind pollination?
a) Vallisneria
b) Wheat
c) Yucca
d) Salvia
37. The process of transfer of pollen from anther to stigma is known as:
a) Fertilization
b) Pollination
c) Syngamy
d) Triple fusion
38. The basal part of an ovule where funicle is attached is:
a) Hilum
b) Chalaza
c) Micropyle
d) Nucellus
39. How many cells and nuclei are present in a mature female gametophyte?
a) 6 cells and 6 nuclei
b) 7 cells and 8 nuclei
c) 7 cells and 7 nuclei
d) 8 cells and 8 nuclei
40. What is the function of integuments?
a) Provide nutrition to the embryo
b) Protect the embryo sac
c) Form the endosperm
d) Facilitate pollination
41. Double fertilization is unique to:
a) Gymnosperms
b) Angiosperms
c) Bryophytes
d) Pteridophytes
42. In Vallisneria, pollination occurs:
a) By birds
b) Underwater
c) By insects
d) By wind
43. The cotyledons in dicot seeds are primarily responsible for:
a) Absorption of nutrients
b) Photosynthesis
c) Food storage
d) Germination
44. The role of the nucellus is to:
a) Form the zygote
b) Develop into the seed coat
c) Protect the embryo sac
d) Provide nutrition to the developing embryo sac
45. Endosperm formation precedes embryo development because:
a) It nourishes the embryo
b) It forms the seed coat
c) It triggers fertilization
d) It stores waste products
46. The type of reproduction seen in cleistogamous flowers is:
a) Apomixis
b) Cross-pollination
c) Vegetative propagation
d) Self-pollination
47. The ovary of a flower develops into:
a) A seed
b) A fruit
c) An embryo
d) A cotyledon
48. The primary function of the suspensor in the embryo is:
a) Storage of food
b) Protection of the zygote
c) Pushing the embryo towards the endosperm
d) Anchoring the embryo
49. The male gametophyte in angiosperms is formed in:
a) Anther
b) Ovule
c) Endosperm
d) Pollen grain
50. Pollination is brought about by snails in:
a) Vallisneria
b) Hydrilla
c) Amorphophallus
d) Lemna
51. Apomixis refers to:
a) Formation of seed without fertilization
b) Formation of embryo without gametes
c) Formation of seed with fertilization
d) Formation of zygote without gametes
52. Which part of the flower produces pollen grains?
a) Ovary
b) Filament
c) Anther
d) Petal
53. Which plant produces non-albuminous seeds?
a) Castor
b) Wheat
c) Pea
d) Maize
54. Megasporogenesis refers to:
a) Formation of megaspores through mitosis
b) Formation of megaspores through meiosis
c) Development of embryo sac
d) Development of ovule
55. In albuminous seeds, the endosperm:
a) Is completely consumed during seed development
b) Persists in the mature seed
c) Does not form
d) Forms the embryo
56. In angiosperms, male gametes are carried to the egg cell by:
a) The pollen tube
b) The generative nucleus
c) The synergids
d) The endosperm
57. What is the ploidy of the zygote in angiosperms?
a) Haploid
b) Diploid
c) Triploid
d) Tetraploid
58. The process by which the nucleus of one male gamete fuses with the egg cell is
called:
a) Syngamy
b) Pollination
c) Triple fusion
d) Fertilization
59. Which hormone is involved in fruit development?
a) Auxin
b) Cytokinin
c) Florigen
d) Ethylene
60. The structure that prevents desiccation of pollen grains is:
a) Exine
b) Intine
c) Hilum
d) Endothecium
61. The pollen grain represents which stage of the male gametophyte?
a) Mature gametophyte
b) Partially developed gametophyte
c) Sporophyte
d) Fully developed male gametophyte
62. Which of the following components of the embryo sac helps in directing the pollen tube?
a) Egg cell
b) Antipodals
c) Synergids
d) Central cell
63. In angiosperms, triple fusion results in the formation of:
a) Endosperm
b) Embryo
c) Seed
d) Zygote
64. Which structure in the ovule provides nourishment to the developing embryo sac?
a) Funicle
b) Nucellus
c) Integuments
d) Chalaza
65. In which type of pollination are genetically identical offspring produced?
a) Cross-pollination
b) Autogamy
c) Xenogamy
d) Geitonogamy
66. The outermost covering of the ovule in angiosperms is called:
a) Micropyle
b) Funicle
c) Integument
d) Nucellus
67. The term "cleistogamy" refers to:
a) Pollination without the opening of flowers
b) Pollination by insects
c) Fertilization in aquatic plants
d) Pollination by wind
68. Which of the following is the most common type of pollination in angiosperms?
a) Geitonogamy
b) Autogamy
c) Xenogamy
d) Apogamy
69. In which plant does water act as the pollination agent?
a) Vallisneria
b) Salvia
c) Wheat
d) Pea
70. Double fertilization is a characteristic feature of:
a) Gymnosperms
b) Angiosperms
c) Bryophytes
d) Pteridophytes
71. Which part of the ovule persists as the micropyle after fertilization?
a) Chalaza
b) Funicle
c) Integuments
d) Nucellus
72. In angiosperms, the vegetative cell of the pollen grain:
a) Divides to form two male gametes
b) Forms the pollen tube
c) Becomes the endosperm
d) Nourishes the developing embryo
73. Which of the following is NOT a feature of wind-pollinated flowers?
a) Light and non-sticky pollen
b) Large feathery stigma
c) Large colorful petals
d) Absence of nectar
74. In the embryo sac, the cells flanking the egg apparatus are called:
a) Synergids
b) Antipodals
c) Central cells
d) Companion cells
75. What happens to the primary endosperm nucleus after fertilization?
a) It degenerates
b) It forms the zygote
c) It develops into the endosperm
d) It forms the seed coat
76. The pollen tube enters the ovule through the:
a) Funicle
b) Chalaza
c) Micropyle
d) Hilum
77. Cross-pollination in Salvia is facilitated by:
a) Wind
b) Insects
c) Water
d) Birds
78. The embryo in angiosperms develops from:
a) Primary endosperm nucleus
b) Synergid
c) Zygote
d) Antipodal
79. How many microspores are produced from one microspore mother cell?
a) One
b) Two
c) Three
d) Four
80. The term "protandry" refers to:
a) Male and female flowers on different plants
b) Pollen grains maturing before the stigma
c) Stigma maturing before pollen grains
d) Unisexual flowers
81. Seedless fruits are produced by:
a) Pollination without fertilization
b) Fertilization without pollination
c) Parthenocarpy
d) Cleistogamy
82. Fertilization and endosperm formation are separated by:
a) Pollination
b) Pollen tube formation
c) Double fertilization
d) Syngamy
83. Integuments of the ovule form:
a) Endosperm
b) Seed coat
c) Nucellus
d) Embryo sac
84. A monocot seed differs from a dicot seed in having:
a) Two cotyledons
b) Perisperm
c) One cotyledon
d) Endosperm
85. In which family is the pollen tube guided by synergids?
a) Fabaceae
b) Poaceae
c) Liliaceae
d) All angiosperms
86. In double fertilization, one male gamete fuses with the egg and the other fuses
with:
a) Synergid
b) Antipodal cells
c) Secondary nucleus
d) Embryo
87. Which of the following is a post-fertilization event in angiosperms?
a) Development of pollen tube
b) Fertilization of ovule
c) Development of seed from ovule
d) Pollination
88. Which structure of the ovule forms the hilum in the seed?
a) Chalaza
b) Funicle
c) Nucellus
d) Micropyle
89. Which plant propagates exclusively by vegetative reproduction?
a) Potato
b) Vallisneria
c) Pea
d) Mango
90. A viable seed does not germinate because of:
a) Lack of water
b) Dormancy
c) Lack of light
d) Scarification
