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Question Bank
Question Bank-B.Sc.I
Q.1 Choose correct alternative and rewrite the sentences.
1) Meaning of term Virion is ___________.
a) Spice b) Salt c) Poison d) Sugar
2. Study of viruses is known as ___________
a) Virology b) Bacteriology c) Phycology d) Mycology
3) _____________ isolated Tobacco Mosaic Virus (TMV) from tobacco plant
a) Martinus Beijrinck b) Adolf Mayer c) Stanley d) Erwin Popper
4) ----------------- shows first time presence of virus in Tobacco plant.
a) Adolf Mayer b) Iwanowski c) Martinus Beijrinck d) Walter Reed
5) Viruses are _____________
a) Autotrops b) Saprophytes c) Obligate parasites d) Facultative parasites
6) Capsule of virus is made up of ___________
a) Carbohydrates b) Protein c) Lipid d) Starch
7). Icosahedral symmetry have __________ equivalent triangular facets
a) 20 b) 25 c) 30 d) 40
8) The term bacterium is given by ____________
a) Ehrenberg b) R. H. Whittekar c) Ronald Ross d) Louis Pasteur
9) The bacterial cell wall is made up of ____________Substance
a) Polysaccharide b) Lipid c) Peptidoglycan d) Lipid
10) Flagella of bacteria helps in ____________
a) Locomotion b) Reproduction c) Fixation d) Digestion
11) All the bacteria fix nitrogen except______________
a) Rhizobium b) E. coli c) Azatobactor d) Cyanobacteria
12 Bacterial cytoplasmic contains ___________ type of ribosomes.
a) 30 S b) 40 S c) 70 S d) 90 S
13) __________ bacteria are used to leach out minerals in Biomining.
a) Pseudomonas b) Thiobacillus c) Bacillus d) Staphylococcus
14) ____________ is asexual reproduction type in bacteria
a) Transduction b) Transformation c) Conjugation d) Binary fission
15) According to G. M. Smith algae classified into __________ classes
a) 5 b) 6 c) 7 d) 8
16) Study of algae known as _________________
a) Phycology b) Cytology c) Physiology d) Mycology
17) _____________ used as biofertilizer
a) Ulothrix b) Microsystis c) Nostoc d) Volvox
18) Chlorella yields ____________ antibiotics
a) Chlorellin b) Ampicillin c) Penicillin d) Carragoenin
19) ____________ is unicellular green alga used in space flights as a source of food
a) Volvox b) Voucheria c) Ulothrix d) Chlorella
20) Term Cyano related to __________ pigments
a) Red b) Yellow c) Yellow green d) Blue green
21) _____________ fresh water alga
a) Sargassum b) Ulva c) Nosctoc d) Gracillaria
22) ________ shows larvicidal properties.
a) Ulva b) Nostoc c) Chara d) Fucus
23) Biofertilizers are active strains of -----------------
a)Microbes b)Virus c)Bryophytes d)Pteridophytes
24) Trihoderma fungicide is useful against -------------pathogenic fungi.
a) Plyporus spp. b) Fusarium spp. c) Colletotrichum spp. d) Mucor spp.
25) BGA can fix atmospheric nitrogen in -------------crop in India.
a) Wheat b) Rice c) Jowar d)Maize
26) -------------- species is symbiotic nitrogen fixer.
a) Rhizobium b) Alternaria c)TMV d)Bacillus
27) Phosphate solubilizing bacteria hydrolyses ------------ compound.
a) Nitrogenous b) Carbohydrates c) Phosphate d) Lipids
29) Azolla removes ---------------- from polluted water.
a)Heavy pesticides b) Heavy metals c) Heavy phosphorus d) Heavy carbon
30) ----------------is a member of Blue-green algae.
a) Chara b) Oedogonium c) Nostoc d) Diatoms
Q. 2.Long questions (Each for 10 Marks)
1. What are types of viruses? Explain DNA virus structure
2. Economic importance of viruses
3. Describe sexual reproduction in bacteria
4. Explain in brief cell structure of bacteria
5. Classification of Algae according to G. M. Smith
6. Describe in detail modes of sexual reproduction in Spirogyra
7. Give an account of economic importance of algae
8. Describe in detail procedure for preparation of biofertilizers.
9. Define biofertilizer? Explain the role of blue green algae as biofertilizers.
10. Describe in brief biofertilizers with respect to characters , association and uses of Rhizobium.
Q. 3 Short Notes (Each for 5 Marks)
1. General characters of viruses
2. Structure of viruses
3. RNA Virus / TMV
4. Symmetry of viruses
5. Bacteriophage
6. Bacterial discovery
7. Gram positive and gram negative bacteria
8. Binary fission in bacteria
9. Harmful activity of Bacteria
10. Gram positive and gram negative bacteria
11. General characters of algae
12. Heterocyst of Nostoc
13. Cell structure of Spirogyra
14. Importance of biofertilizers in agriculture
15. Practical application of biofertilizers
16. Azolla as a biofertilizers
17. Trihoderma as a biofertilizers
Question Bank-B.Sc.II
Q.1.Choose correct alternative and rewrite the sentences.
1. Humus has got --------- colour.
i) Poor ii) Dark iii) Moderate iv)No
2. The term ecology was coined by -------------.
i) Hackel ii) Odum iii) Reiter iv) Linnaeus
3. Ammonium compounds are converted into nitrates by bacterium ---------.
i) Bacillus ii) Rhizobium iii) Notrosomonas iv) Azospirillum
4. In epiphytes seed dispersal is caused by ------------------ .
i) Wind ii) Insects iii) Birds iv) All of these
5. --------- factor is essential for photosynthesis.
i) Rainfall ii) Light iii) Temperature iv) Soil
6. Andaman region shows dominant -------------- forest.
i) Pine ii) Sal iii) Mangrove iv) Mango
7. ---------- is agriculturally richest part of India.
i) Malbar ii) Assam iii) Andaman iv) Gangetic plains
8. In xerophytes ------------ system is well developed.
i) Root ii) Stem iii) Leaves iv) All of these
9. Energy flow is always --------------.
i) Multidirectional ii) Unidirectional iii) Circular motion iv) None of these
10. . ---------------- releases or secretes humic acid and carbonic acid when they grow on Rocks.
i) Gymnosperms ii) Angiosperms iii) Ferus iv) Mosses
11. The term ecology was coined from Greek Word ---------.
i) Oikos ii) Ecos iii) House iv) Logous
12. Soil is --------- factor.
i) Biotic ii) Climatic iii) Edaphic iv) Topographic
13. ---------- is not a state of Water.
i) Solid ii) Liquid iii) Vapour iv) Plasma
14. All the members of Viscaceae are ---------------.
i) Holoparasites ii) Hemiparasites iii) Obligate parasites iv) All of these
15. The -------- is more useful for plant growth
i)Visible light spectrum ii)Light spectrum iii) Cosmic ray light spectrum iv)Radio rays spectrum
16.The sciophytes are also called -----------
i) Dark loving plants ii) Full bright sunlight loving plants iii)Shade loving plants iv)Night loving plants
17.Hydrilla is an example of ---------- plant.
i) Mesophytic ii)Hydrophytic iii) Xerophytic iv)Epiphytic
18. Bryophyllum is an example of -------- xerophyte.
i) Succulent ii)Ephemeral iii) Non-succulent iv)None of these
19. In hydrophytes ---------- is absent or poorly developed.
i) Sunken stomata ii) Cuticle iii) Cortex iv) Epidermis
20. ------------ proposed theory of tolerance.
i) Thoday ii) Coins iii) Roberts iv) Good
21. Xerophytes show presence of ---------- epidermis.
i) Single layered ii) Waxy iii) Multilayered iv) Steroid
22. A parasitic relationship is opposite to -----------
i) Epiphytic ii) Mutualistic iii) Commensilism iv)All of these
23. All parasitic plants have modified -------- root.
i) Clinging ii)Aerial iii)Haustorial iv) Pnematophore
24. Ecosystem is structural and ------------- unit of communities.
i) Functional ii)Reciprocal iii)Non-functional iv)All of these
25. The plants are called -------
i) consumers ii) decomposers iii)producers iv)rotifers
26. The pyramid of energy is always -------
i)inverted ii) upright iii) circular iv) quadrangular
27. The mangrove ecosystem is found in ------------
i) Oceans ii) Lakes iii) Estuaries iv)River
28. ---------- defined Phytogeography as a branch of botany.
i) Linnaeus ii) Roberts iii) Steward iv) Good
29.---------- deals with distribution of plants.
i)Biogeography ii) Phytogeography iii) Geography iv)Zoogeography
30. There are -------------- phytogeographic region of India.
i) 10 ii) 9 iii) 8 iv) 12
Q.2.Broad Answer Type Questions. (Each for10 marks)
- Explain the scope of ecology in relation to Agriculture and Microbiology?
- Define soil and explain soil formation process.
- What are xerophytes ?Explain in brief important internal adaptations in them
- What are hydrophytes? Explain in brief important internal adaptations in them..
- Describe various successional stages of hydrosere.
- Describe various successional stages of xerosere.
- What are ecological pyramids? Describe in brief different pyramids with suitable example?
- Describe in brief phyto-geographical regions of India.
- Explain nature of biogeochemical cycles.
- Explain in brief nitrogen cycle.
Q.3.Short Note Type Questions. . (Each for 05 marks)
- Biological weathering of rock
- Soil Humus
- Soil Profile
- Water cycles
- Rauinkaer's life forms
- Physiognomy
- Stratification
- Characters of community
- Hydric adaptations.
- Xeric adaptation
- Types of ecosystem
- Food chains
- Food web
- Central Himalayas
- Gangetic plain
- Biotic components of ecosystem
- Role of nitrogen to plants
- Andaman region
- Deccan plateu
- Pyramid of biomass
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