PSC questions and answers

Botany-HSST

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                      first of all thank you for visiting this blog.Try the quizzes here and improve your general knowledge.Here i'm note down several questions and answers, the questions here are selected with an aim to help the visitors learn more.These questions and answers will help the students to prepare for various competitions.

1. The thermostable DNA polymerase which is isolated from a bacterium Thermus aquaticus
(A) Taq polymerase
(B) DNA polymerase-I
(C) Hind I
(D) Hind II
Answer:- Option-A

2. Name the common ancestor of the great apes and man
(A) Dryopithecus
(B) Australiopethecus
(C) Homeosapiens
(D) Homohabilis
 Answer:- Option-A

3. World Forest Day is on
(A) March 22
(B) March 25
(C) March 21
(D) March 31
 Answer:- Option-C

4. Lamp brush chromosomes occur at
(A) Pachetene stage
(B) Zygotene stage
(C) Diplotene stage
(D) Leptotene stage
Answer:- Option-C

5. Taq polymerase is involved in
(A) PCR
(B) PAGE
(C) RAPD
(D) VNTR
Answer:- Option-A

6. R.Q. value in Opuntia
(A) Less than 1
(B) Greater than 1
(C) Negative value
(D) Zero
Answer:- Option-D

7. Colchicum autumnale is a member of
(A) Rubiaceae
(B) Liliaceae
(C) Asteraceae
(D) Poaceae
Answer:- Option-B

8. A condition of air pollution that results when sulfur dioxide and other gases and particles emitted by an
erupting volcano react with oxygen and moisture in the presence of sunlight.
(A) Photochemical smog
(B) Smoke
(C) Vog
(D) None of the above
Answer:- Option-C

9. The Nobel Prize in Chemistry 2009 was awarded to Venkatraman Ramakrishnan, Thomas A. Steitz and Ada E.
Yonath for
(A) Determining the detailed structure and mechanism of the ribosome
(B) For cell signaling
(C) For cell wall composition
(D) Protein structure
Answer:- Option-A

10. Bio fortification improves ………….
(A) Fruit production
(B) Micronutrient and mineral contents
(C) Environmental conditions
(D) The nutritional quality of breeding crops
Answer:- D

11. A banana herb is virus infected mention the technique that will help in obtaining healthy banana plants from this diseased plant is
(A) Tissue culture
(B) Anther culture
(C) Meristematic culture
(D) Ovary culture
Answer: C

12. Name the fungus used in organ transplant treatment?
(A) Trichoderma
(B) Polysporum
(C) Aspergillus
(D) Pencillium
Answer: A

13. Name the type of biodiversity represented by 50,000 different strains of rice in India?
(A) Genetic diversity
(B) Ecological diversity
(C) Species diversity
(D) Molecular diversity
Answer: A

14. Phytophagous insects feed on ……………
(A) Plant
(B) Bacteria
(C) Virus
(D) Bacteriophage
Answer: A

15. Name the types of association that the genus glomus exhibits with higher plants?
(A) Symbiosis
(B) Commensalism
(C) Parasitism
(D) All the above
Answer: A

16. Percentage of PAR captured by plants ranges from:
(A) 2-10
(B) 10-20
(C) 40-50
(D) .5-1
Answer: A

17. The thermostable DNA polymerase which is isolated from a bacterium Thermus aquaticus
(A) Taq polymerase
(B) DNA polymerase-I
(C) Hind I
(D) Hind II
Answer: A

18. Name the common ancestor of the great apes and man
(A) Dryopithecus
(B) Australiopethecus
(C) Homeosapiens
(D) Homohabilis
Answer: A

19. World Forest Day is on
(A) March 22
(B) March 25
(C) March 21
(D) March 31
Answer: C

20. Lamp brush chromosomes occur at
(A) Pachetene stage
(B) Zygotene stage
(C) Diplotene stage
(D) Leptotene stage
Answer: C

21. Taq polymerase is involved in
(A) PCR
(B) PAGE
(C) RAPD
(D) VNTR
Answer: A


22. R.Q. value in Opuntia
(A) Less than 1
(B) Greater than 1
(C) Negative value
(D) Zero
Answer: D

23. Colchicum autumnale is a member of
(A) Rubiaceae
(B) Liliaceae
(C) Asteraceae
(D) Poaceae
Answer: B

24. A condition of air pollution that results when sulfur dioxide and other gases and particles emitted by an erupting volcano react with oxygen and moisture in the presence of sunlight.
(A) Photochemical smog
(B) Smoke
(C) Vog
(D) None of the above
Answer: C

25. The Nobel Prize in Chemistry 2009 was awarded to Venkatraman Ramakrishnan, Thomas A. Steitz and Ada E. Yonath for
(A) Determining the detailed structure and mechanism of the ribosome
(B) For cell signaling
(C) For cell wall composition
(D) Protein structure
Answer: A

26. Vegetative propagation in lemon
(A) Stem cuttings
(B) Root cuttings
(C) Asexual reproduction
(D) None of the above
Answer: A

27. Sweet potato and potato is a result of convergent evolution in
(A) Homologus organ
(B) Analogus organ
(C) Cladistic structures
(D) Morphological structures
Answer: B

28. Which of the following plants is characterized by the presence of cortical vascular bundles?
(A) Chenopodium
(B) Nyctanthes
(C) Tecoma
(D) Boerhaavia


29. Knots are formed in woods
(A) Branches fall off and leaves scares
(B) Injuries caused by animals
(C) Of insects bites
(D) Branches get buried embedded in the stem
Answer: D

30. Lenticels do not occur in
(A) Root
(B) Fruit
(C) Stem
(D) Leaf
Answer: D

31. P-protein is found in
(A) Collenchymas
(B) Phloem parenchyma
(C) Sieve tube
(D) Xylem vessels
Answer: C

32. The lacunae in the vascular bundles of monocot stem is
(A) A large sized vessel
(B) Mucilage canal
(C) Lysigenous water cavity
(D) Metaxylem
Answer: C

33. Which of the following is grown by transplanting?
(A) Maize
(B) Sorghum
(C) Onion
(D) Soyabeen
Answer: A

34. Cobalt is associated with
(A) Growth hormone
(B) Vitamin B12
(C) Haemoglobin
(D) Intestinal enzymes
Answer: B

35. Who among the following is considered as father of genetic engineering?
(A) Philip Drinker
(B) Paul Berg
(C) Thomas Addison
(D) Alpheus S. Packard
Answer: B

36. Which of the following is not a gaseous air pollutant?
(A) Oxides of sulphur
(B) Oxides of nitrogen
(C) Hydrocarbon
(D) Smoke
Answer: D

37. Which one of the following agricultural practices is eco-friendly?
(A) Organic farming
(B) Shifting cultivation
(C) Cultivation of high yielding varieties
(D) Glass house farming
Answer: A

38. Name the plant which is known as Terror of Bengal
(A) Agave
(B) Ginger
(C) Bryophyllum
(D) Water hyacinth
Answer: D

39. Angiosperm seeds with perisperm
(A) Castor
(B) Black pepper
(C) Barley
(D) Wheat
Answer: B

40. Plant propagation technique practiced in pomograte
(A) Air layering
(B) Gootee
(C) Gastra
(D) Oegium
Answer: B

41. Name the stage of cell division where segregation of independent pair of chromosomes occur
(A) Anaphase -1
(B) Prophase-1
(C) Meiosis-2
(D) Telophase-1
Answer: A

42. Name the enzyme responsible for the transcription of tRNA
(A) RNA polymerase III
(B) RNA polymerase II
(C) Polymerase
(D) RNA polymerase-I
Answer: A

43. The maximum number of genes is present in human chromosome
(A) Chromosome No. 7
(B) Chromosome No. 3
(C) Chromosome No. 5
(D) Chromosome No. 1
Answer: D

44.. A marine angiosperm is
(A) Wolffia
(B) Lemna
(C) Valliseneria
(D) Zostera
Answer: D

45. The colour tag of breeder seed is
(A) Yellow
(B) White
(C) Purple
(D) Blue
Answer: D

46. The fruit crop that can be propagated by apomictic embryo is
(A) Citrus
(B) Banana
(C) Apple
(D) Mango
Answer: A

47. An endangered carnivorous plant is
(A) Fly trap
(B) Utricularia
(C) Roridula
(D) Nepenthes
Answer: D

48. What is called nature’s supermarket?
(A) Mango tree
(B) Coconut palm
(C) Thulsi
(D) Neem tree
Answer: B

49. Non-specific type of defence acquired by the body at the time of birth
(A) Acquired immunity
(B) Innate immunity
(C) Antibodies
(D) Interferons
Answer: B

50. A collaborative data collection of the functional elements of the human genome that uses next-generation DNA-sequencing technologies and genomic tiling arrays, technologies able to generate automatically large amounts of data with lower research costs but with the same quality and viability
(A) Encode project
(B) Genome project
(C) Databases
(D) Genebase
Answer: A

51. A bioinformatics tool which can be used to characterize the Pan Genome
(A) FDA
(B) BPGA
(C) NRCS
(D) PCR
Answer: B

52. A specimen later selected to serve as the single type specimen when an original holotype has been lost or destroyed or where the original author never cited a specimen
(A) Paratype
(B) Lectotype
(C) Neotype
(D) Syntype
Answer: C

53. The term primarily used today to refer to the discipline of finding, describing and naming taxa, particularly
(A) Omega taxonomy
(B) Beta taxonomy
(C) Alpha taxonomy
(D) Taxonomy
Answer: C

54. The ripening of fruit and loss of leaves in the winter are controlled in part by the production of a gas by the plant
(A) Ethylene
(B) Carbon dioxide
(C) Oxygen
(D) ABA
Answer: A

55. A frond which is a vegetative leaf analogous to the typical green leaves of seed plants that does not produce spores, instead only producing sugars by photosynthesis can be called as
(A) Trophophyll
(B) Sporophyll
(C) Phycophyll
(D) Sphenophyll
Answer: A

56. Evolutionarily conserved protein involved in folding of proteins is
(A) Chaperons
(B) Lectins
(C) Ferritin
(D) Hormonal protein
Answer: A

57. A known protein amino acid is
(A) Lysine
(B) Histidine
(C) Taurine
(D) Arginine
Answer: C

58. An adaptive structure in plants for the elimination of surplus water is
(A) Hydathodes
(B) Stomata
(C) Transpiration
(D) Guttation
Answer: A

59. SCID is caused by
(A) A defect in gene
(B) A nucleotide
(C) Nitrogen base
(D) Protein
Answer: A

60. The plant that catches its prey with leaf fibre.
(A) Genlisia
(B) Roridula
(C) Nepenthes
(D) Venus fly trap
Answer: B

61.  Single leaf plant is
(A) Amorphophalus
(B) Opuntia
(C) Bryophylum
(D) Bigonia
Answer: A

62. The plant part showing negatively traumatropic movement is
(A) Leaf lamina
(B) Root tip
(C) Stem tip
(D) Flower bud
Answer: B

63. Metabolically advantageous sugar is
(A) Glucose
(B) Sucrose
(C) Fructose
(D) Galactose
Answer: B

64. Replenishing or filling up reactions are called
(A) Inter-mediatory metabolisms
(B) Amphibolic pathways
(C) Energy metabolisms
(D) Anaplerotic reactions
Answer: D

65. First aminoacid discovered in protein is
(A) Threonine
(B) Glycine
(C) Asparagine
(D) Leucine
Answer: C

66. Free living nitrogen fixing cyano bacteria includes
(A) Calothrix
(B) Azotobacter
(C) Clostridium
(D) Chromatium
Answer: A

67. The plant that catches its prey with leaf fibre.
(A) Genlisia
(B) Roridula
(C) Nepenthes
(D) Venus fly trap
Answer: B

68. Viola and oxalis produce two types of flowers one is chasmogamous flower name the other type
(A) Monoecious
(B) Dioecious
(C) Closed flowers
(D) Polyecious
Answer: C

69. A second messenger molecule in cells which plays a pivotal role in hormone action is
(A) Kinase
(B) c GMP
(C) AMP
(D) c AMP
Answer: D

70.  A marine angiosperm is
(A) Wolffia
(B) Lemna
(C) Valliseneria
(D) Zostera
Answer: D

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PSC questions and answers