APPLICATION BIOLOGY

1. The pesticide most toxic to vertebrates isa. carbamates b. organophosphates c. organochlorides d. nicotinee. none of these

2. Loss of agricultural productivity due to pest and disease isa. 5% b. 10% c. 15% d. 30% e. 50%

3. Transgenic crop developed to tolerate herbicide isa. tomato b. tobacco c. both a and b d. sunflower e. none

4. Natural insecticide azadiractin is obtained froma. fungus b. algae c. neem d. tobacco e. none

5. VAM is a. endomycorrhiza b. ectomycorrhiza c. bioinsecticide d. bioherbicidee. none

6. The nitrogen fixing symbiotic organism present in the leaves of Azolla isa. anabaena b. azospirillum d. aulosira d. nostoc e. none

7. The best biofertilizer for rice isa. rhizobium b. bacillus c. azospirillum d. bradyrhizobium e. none

8. Fertilizers applied to crop plants , pollutea. water resourcesb. soil resources c. both water and soil resources e. none

9. A manure supplied to the planta. nitrogen b. phoaphorous c. potassium d. all nutrients e. none

10. Germ plasm containsa. reproductive cells b. somatic cells c. both a and b d. leaf e. none

11. The native place of Hevea rubber isa. India b. malasia c. mexico d. asia minor e. brazil

12. Which of these is solar energy convertera. chlorella b. mucorc. agaricus d. rhizobium d. none

13. Restriction endo nucleasea. specific for each gene b. common to all genes c. common to all RNAsd. common to all organisms d. none

14. Reproducing new plants by cells instead of seeds is known asa. bio fertilizer b. mutation c. tissue culture d. antibodies e. none

15. One of the plants introduced from old world to new world isa. potato b. rice c. sweet potato d. maize e. none

16. The main source of bio fertilizers area. cyanobacteria b. fungi c. bacteria d. all these e. none

17. Which of the following is a green manurea. sebania b. maize c. rice d. sorghum e. none

18. Which of the following is an aneuploid a. diploid b. triploid c. trisomic d. tetraploid e. autotetraploid

19. Which of the following is a fungicidea. 2,4-D b. DDT c. BHC d. Bordeaux mixture e. none

20. Which of the following most commonly used for green manuaring in Indiaa. Sun hem b. Lentil c. Cowpea d. all these e. none

21. Biopiracy is related to which of the followinga. traditional knowledge b. bio molecules and bio resourcesc. genes isolated from bio resourcesd. bio resources e. all these

22. Which of the following is used in bio wara. pathogen b. toxin from pathogen c. a delivery system from the bio weapon agent d. all these

e. none of these

23. Yoghurt is prepared from milk by fermentation usinga. rhizopus b. lactobacillus bulgaricus c. actinomucor d. aspergillus e. none

24. The ferments food Tempeh is a fermented food used in Japan. It is prepared using rhizopus in the substratea. rice b. soyabean c. barley d. milk e. tofu

25. Cheese is prepared from milk by the fermentation process usinga. pencillium roqueforti b. aspergillus c. rhizopus d. streptococcus e. none

25. Single cell protein – SCP – technology is developed to meet the requirements likea. human protein suppliment b. animal and poultry food c. both a and bd. bio fertilizer e. manure

26. In SCP production microorganisms are cultured in large bioreacters to form large mass of

cells. Which of the following microorganism is generally useda. algae b. yeast c. bacteria d. all these e. none

27. Algal SCP contains about 60% protein. It is cultured using the substratea. CO2 b. Sugar c. CO2 and sunlight d. CO2 and water e. none

28. Which one of the algae is used as a source of SCPa. chlorella b. scenedesmus c. spirulina d. all these e. none

29. Filamentous fungi like fusarium graminearum , paecilomyces varioti etc are used to produce SCP. They produce 55-60 % crude protein using

a. Starchb. sucrose c. starch hydrolysates d. starch paste e. none30. The most important source of bacterial SCP is methylophilus methlotrophus species. It can produce about 80% crude protein

usinga. ethanol b. methanol d.CO2 and sunlight d. water and sugar e. agar

31. Filamentous fungi like Paecilomyces varioti produces SCP usinga. starch b. sulphite liquor c. CO2 d. methanol e. sugar

32. Yeasts like Saccharomyces uses molasses as the substrate to produce SCP while Candida utilis usesa. ethanol b. methanol c. starch d. molasses e. none

33. Of the 4000 species of mushrooms , the edible varieties includea. 1000 b. 2000 c. 450 d. 120 e. 800

34. The most common edible mushrooms area. Agaricus compestris b. A. arvensis c. Morechella esculanta d. all these e. none

35. The common poisonous mushroom isa. Amanita phalloises b. a. voiraosa c. Lepiota morgani d. all thesee. none

36. The poisonous mushrooma differs from edible ones in a. colour of the body b. unpleasant taste or smell c. grows in woodsd. produce pink coloured spores e. all these

37. Which of the following is used for mushroom culturea. straw b. salt solution c. sugar solution d. starch with salt e. none

38. The recommended dose of the preservative potassium meta bisulphite in foods isa. 1% b. 0.1% c. 0.05% d. 0.005% e. 2%

39. The common vinegar used as preservative in foods isa. ethanol b. sodium meta bisulphite c. china salt d. acetic acid e. none

40. Collection of best plants from mixed population of crops is calleda. pure line selection b. mass selection c. clonal selection d. breed selection e. none

41. Clonal selection method is usually done ina. rice b. potatoc. sweet potato d. sugar cane e. both c and d

42. Colchicine , the mitotic poison used to induce polyploidy in plants is obtained from the plant Colchicum autumnale. It is extracted from

a. leaves b. roots c. seeds and bulbs d. stem e. flower43. Which one is an autopolyploid

a. potato b. coffeec. ground nut d. banana e. all these44. Which of the plant is used for mutation studies

a. triploid b. diploid c. monoploid d. trisomic e. tetrasomic45. Triticale is a man made allo polyploid. Which one is another allopolyploid

a. sweet potato b. Rhaphano brassica c. sugar cane d. potato e. none46. The azolla – Anabaena symbiotic relation is utilized to increse the fertility of rice field.

It increases ------ in the soila. K b. P c. N2 d. C e. Sulphur

47. Bacillus polymyxa is aa. cyanobacteria b. symbiotic nitrogen fixing bacteria c. free living nitrogenfixing bacteria d. fungus d. antibiotics producing bacteria

48. The loose association between a nitrogen fixer bacteria Azospirullum and Brazilian grass was found out bya. Swaminathan d. Guha and Maheswari d. Johannah Dobreined. Khorana e. none

49. Combination of photosynthesis and nitrogen fixation occurs in cyano bacteria likea. Anabaena b. Nostoc c. Aulosira d. all these e. none

50. Ectomycorrhiza forms a mantle on the outside of the roots of plants. This increasesa. fertility b. support c. water and nutrient absorption d. all these e. none

51. Endomycorrhiza like Vesicular Arbuscular Mycorrhiza lives in

a. in the xylem b. in the phloem c. in the cortex cells d. in the steme. in the growing bud

52. In plant tissue culture one of the following is used as growth factora. GA3 b. Zeatinc. ABA d. urea e. all these

53. The laminar air flow apparatus is used ina. silk reeling b. honey extraction c. plant tissue culture d. genetic engineering e. plant breeding

54. Which one is used to sterilize the plant material before culturinga. ethanol b.methnol c. sodium hypochlorate d. calcium hypochloratee. either c or d

55. The White’s medium was once used to culturea. SP algae b. bacteria c. fungi d. plant tissues e. none

56. One of the best combination of growth regulators in tissue culturea. salt and sucrose b. glucose and sucrose c. glucose and saltd. sucrose and gelatin e. sucrose and minerals

57. The advantage of somatic embryoculture is that a complete plant with tap root system can be produced. Which of the plant was produced through this method

a. carrot b. celery c. alfalfad. all these e. none58. The first anther culture in Datura was carried out by

a. Beadle and Tatum b. Swaminathan c. Guha and Maheswarid. Linsmaier and Skoog e. none

59. Kolerago isa. disease of potato b. disease of aracanut c. culture mediumd. nutrient in tissue culturee. disease of beetel

60. Which one is a natural insectcidea. nicotine b. pyrethrum c. cinerin d. all these e. none

Answer key1.b2.d3.c4.c5.a6.a7.c8.c9.d10.a11.212.a13.a14.c15.b16.d17.a18.c19.d20.d21.e22.d23.b24.b25.a25.c26.d27.c28.d29.c30.b31.b32.a33.b34.d

35.d36.e37.a38.c39.d40.b41.e42.c43.e44.c45.b46.c47.c48.d49.d50.c51.c52.e53.c54.e55.d56.a57.d58.c59.b60.d