Sexual Reproduction in Flowering Plants
1. A typical angiosperm anther consists of
(a) Only one microsporangium
(b) Two microsporangia
(c) Three microsporangia
(d) Four microsporangia
2. What is the ploidy of the cells of the microspore tetrad?
(a) Haploid
(b) Diploid
(c)Triploid
(c) Polyploid
3. Tapetum is
(a) Nutritive tissue
(b) Protective tissue
(c) Sporogeneous tissue
(d) External layer of microsporangium
4. Germ pores are present on
(a) Intine
(b) Exine
(c) Vegetative cell
(d) Generative cell
5. Pollen allergy is caused by
(a) Pistia
(b) Mirabilis
(c) Myosotis
(d) Parthenium
6. Translator apparatus is found in
(a) Calotropis
(b) Triticum
(c) Allium
(d) Citrus
7. Intine is made up of
(a) Cellulose
(b) Pectocellulose
(c) Sporopollenin
(d) Silica and cellulose
8. Pollen viability of rice and wheat plant is
(a) 45 seconds
(b) 1.5 hours
(c) 24 hours
(d) Several months
9. In flowering plants, pollination takes place at
(a) 1 celled stage
(b) 2 celled stage
(c) 3 celled stage
(d) 4 celled stage
10. Pollen tube was first observed by
(a) Amici
(b) Correns
(c) Dickinson
(d) Strasburger
11. Pollen tube carries
(a) Female gametes
(b) Motile gametes
(c) Non-motile male gametes
(d) Male & female gametes
12. Suspensor of dicot embryo is
(a) Absent
(b) One celled
(c) 6-10 celled
(d) 10-20 celled
13. Perisperm is
(a) Remnant of nucellus
(b) Degenerated synergids
(c) Peripheral part of endosperm
(d) Degenerated secondary nucleus
14. Epiblast is
(a) Embryo of grass
(b) Covering of radicle
(c) Covering of plumule
(d) Reduced cotyledon of grass embryo
15. Coconut milk is
(a) Solid endosperm
(b) Liquid endosperm
(c) Helobial endosperm
(d) Degenerated cellular endosperm
16. Most common type of endosperm is
(a) Nuclear
(b) Cellular
(c) Helobial
(d) Both (b) & (c)
17. Development of sporophyte without gametic fusion is known as
(a) Apomixes
(b) Apospory
(c) Apogamy
(d) Agamospermy
18. A stamen is
(a) Microsporophyll
(b) Megasporophyll
(c) Microsporangium
(d) Megasporangium
19. Development of anther in angiosperms is
(a) Simple
(b) Gradate
(c) Eusporangiate
(d) Leptosporangiate
20. The tapetal cells of anther shows
(a) Haploidy
(b) Diploidy
(c) Triploidy
(d) Polyploidy
21. Glandular type of tapetum secretes
(a) Pollenkit
(b) Sporopollenin
(c) Compatibility proteins
(d) All of the above
22. Exine is composed of
(a) Lignin
(b) Pollen kit
(c) α-cellulose
(d) Sporopollenin
23. The number of germ pores in dicots and monocots pollen grains are
(a) 1,3
(b) 3,1
(c) 2,1
(d) 3,2
24. Germination of pollen grain is due to
(a) Ca, B
(b) Mn, Ca
(c) N, S
(d) Fe, Ca
25. Number of male gametes in one pollen tube is
(a) 1
(b) 2
(c) 3
(d) 4
26. Chasmogamy is pollination in
(a) Bud condition
(b) Open flowers
(c) Closed flowers
(d) Unrelated flowers
27. In geitonogamy, pollen grains are transferred to
(a) Genetically similar flower
(b) Genetically different flower
(c) Stigma of the same flower
(d) Stigma of another flower of a different plant
28. Which of the following is not a contrivance for self pollination?
(a) Homogamy
(b) Dichogamy
(c) Cleistogamy
(d) Bud pollination
29. Bats are pollinator of
(a) Butea
(b) Sunflower
(c) Adansonia
(d) Callistemon
30. Dioecious condition and epihydrophily is found in\
(a) Salvia
(b) Zostera
(c) Coconut
(d) Vallisneria
31. Types of ovules in angiosperms are
(a) 3
(b) 6
(c) 8
(d) 11
32. Double fertilization was discovered by
(a) Amici
(b) Nawaschin
(c) Strasberger
(d) P. Maheshwari
33. How many megaspore mother cells produce 100 eggs during meiosis?
(a) 1
(b) 25
(c) 50
(d) 100
34. Mother cell of endosperm is
(a) Egg
(b) Synergid
(c) Antipodal
(d) Central cell
35. Fusion of 2nd male gamete with secondary nucleus is called
(a) Syngamy
(b) Triple fusion
(c) Double fertilization
(d) Triple fertilization
36. Ovules are also called
(a) Seeds
(b) Nucellus
(c) Megasporophyll
(d) Integumented megasporangia
37. Fibrous bands present in endothecium of anther wall is made up of
(a) Lignin
(b) Pectin
(c) α-glucsoe
(d) sporopollenin
38. The two cells at which pollen grains are discharged are:
(a) Smaller vegetative cell and larger body cell
(b) Larger vegetative cell and smaller body cell
(c) Smaller generative cell and larger vegetative cell
(d) Larger generative cell and smaller vegetative cell
39. When pollen grains of a flower fall on stigma of another flower of the same plant it is
(a) Genetically self-pollination
(b) Ecologically cross pollination
(c) Both
(d) None
40. The chemical complex controlling the chemotropic movement of pollen tube in style is
(a) K+, organic acids
(b) Ca, B, inositol sugar complex
(c) Lignin, amino acid, potassium salts
(d) Ca, K+, Sugar complex
41. Germination of pollen grain on the stigma is called
(a) In vivo germination
(b) In-vitro germination
(c) In situ germination
(d) Ex-situ germination
42. Pollen tube was first observed by
(a) Amici
(b) Nawaschin
(c) Camerarius
(d) Maheshwari
43. Multiple embryos are produced by
(a) Cleavage of single zygote
(b) Fertilization of synergids or antipodal cells by sperms
(c) Development of cells of nucellus or integument into embryo
(d) All of the above
44. Sporoderm is
(a) Spore wall
(b) Sperm wall
(c) Anther wall
(d) Integument
45. Spermoderm is
(a) Sperm wall
(b) Seed coat
(c) Anther wall
(d) Integument
46. Ploidy level of angiospermic endosperm is
(a) N
(b) 2n
(c) 3n
(d) 4n
47. The viability of seeds is tested by
(a) TTC
(b) Sucrose
(c) Boric acid
(d) Liquid nitrogen
48. During germination the entry of oxygen and water into seed is facilitated by
(a) Testa
(b) Micropyle
(c) Seed coat
(d) Integument
49. Non-recurrent agamospermy is seen in
(a) Pear
(b) Apple
(c) Grapes
(d) Banana
50. Remains of 2nd cotyledons occurring in grasses is called
(a) Epiblast
(b) Epicotyl
(c) Hypocotyl
(d) Scutellum
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