Botany Previous Year Question Papers

1. Which of these is not an example of sexual reproduction in bacteria?
A. Transfusion
B. Transformation
C. Transduction
D. Conjugation

2. Bacteria utilized for making Yoghurt is:
A. Lactobacillus acidophilus
B. Lactobaciilus lactis
C. Lactobacillus vulgericus
D. Lactobacillus baloricus

3. In homo-sapiens infertility is caused by which organism?
A. Mycoplasma pneumonia
B. Mycoplasma homonis
C. Mycoplasma salivarium
D. Mycoplasma fermentans

4. Organism which have RNA as genetic material but without protein envelop is?
A. Vims
B. Viroid
C. Bacteria
D. Bacteriophage

5. “Green ear” disease for pearl millet is caused by:
A. Albugo candida
B. Sclerospora
C. Aspergillus
D. Achinospora

6. The fungi which is edible is:
A. Agaricus
B. Aspergillus
C. Altemaria
D. Albugo

7. Black point disease on wheat grain is caused by?
A. Aspergillus triticina
B. Aspergillus solani
C. Aspergillus tenuis
D. Aspergillus brassicae

8. Diatoms are found in?
A. Rihodophyceae
B. Chlorophyceae
C. Xentophyceae
D. Bacileriophyceae

9. The example of a phytoplankton is:
A. Volvox
B. Ectocarpus
C. Sargassum
D. Ulva

10. Vascular system ls absent in:
A. Gymnosperm
B. Bryophyta
C. Pteridophyte
D. Angiosperm

11. Which algae ls present in mucilaginous cavities of Anthoceros?
A. Chara
B. Coleochaete
C. Nostoc
D. All above

12. An extra copy from selected plant in taxonomy ls called?
A. Isotype
B. Neotype
C. Holotype
D. Co-type

13. Indian herbariums are classified on which system of classification?
A. Engler and Prantie
B. Bentham and Hooker
C. Armen and Takhtajan
D. Mendel and Linnaeus

14. ⊕ symbol, used for describing a floral formula is?
A. Actinomorphic
B. Bracteolate
C. Zygomorphic
D. Hermetomorphic

15. Plant whose leaf juices is called as “Soral Pal” is
A. Hibisicuscannabinus
B. Hibisicuselatus
C. Hibisicussabdarita
D. Hibisicusmutabilis

16. Thigmonaslic movements are found In which plant?
A. Lathyru saphaca
B. Lathyrus odoratus
C. Mimosa pudica
D. Cassia fistula

17. Which of the following plants do not have medicinal value?
A. Angelica archanglica
B. Centelaasiatica
C. Ferulaasa-foetida
D. Eryngium plannum

18. Bringraj oil is extracted from?
A. Helianthus annuus
B. Carthamus tinctorial
C. Ecliptaprostrata
D. Inula helenium

19. lkaloids of which plants in family Apocynaceae are used for cancer treatment?
A. Apocynum
B. Wringhtia
C. Tabemaemontana
D. Catharanthus

20. Which of the following interaction is a major contributor for proteins stability in non-polar environment?
A. Ionic interaction
B. Hydrogen bonding
C. Van der Walls interaction
D. Hydrophobic interaction

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21. Which of the following structure -function pairs is not correct?
A. Nucleolus—RNA synthesis
B. Lysosomes—imracellular digestion
C. Endoplasmic reticulum—glycosylation
D. Microtubules—–muscle construction

22. Which of the following compounds is not a part of alkaloid class of secondary metabolites?
A. Indole
B. Lignin
C. Tropane
D. Pyrroidine

23. Due to global warming, species of plants and animals can generally be expected to migrate from:
A. Higher altitudes to lower altitudes
B. Lower altitudes to higher altitudes
C. West to east along a given latitude
D. East to west along a given latitude

24. C4 plants and CAM plants are similar In their photosynthetic adaptations in which of these respects?
A. In both cases the stomata normally close during the day
B. Both types of plants make their sugar without the calvin cycle
C. In both case an enzyme other than RUSISCO carriers out the first step in carbon fixation
D. Both type of plants makes most of their sugar in the dark.

25. weed, growing in a lake, doubles in an area every week. If It takes a month for it to cover the entire surface of the lake, how long does It take for 1/4th of the surface?
A. 0.5 week
B. 1.5 week
C. 2.0 week
D. 1.0 week

26. if temperature increases by more than 4°C due to the global warming, the most likely impact on forests in the tropics would be:
A. Stimulated growth of trees resulting in increased biomass
B. Increase in the diversity of tress in tropical forests
C. increase in respiration over photosynthesis resulting in decreased biomass
D. Migration of temperature tree species to the tropics.

27. Mitochondrial genes are different from nuclear genes ln that, mitochondrial genes:
A. Have fewer stop codon
B. Do not have intron
C. Have different start codon
D. Are shorter than nuclear genes

28. All the following may be considered as site for secondary succession EXCEPT:
A. An abandoned agricultural field
B. A bare rock shelf on a mountain side
C. A forest gap resulting from a tree fall
D. A hurricane damaged forest

29. A community with low species diversity and high dominance is said to be:
A. Productive but unstable
B. Both productive and stable
C. Neither productive nor stable
D. Unproductive but stable

30. Which of the following ls not an endangered plant species?
A. Ceropegiamahabalei
B. Butea monospenna
C. Fimbristylishirstufolia
D. lschaemumjayaohandranii

31. Among the following events in history of life –
A. Prokaryotic cell
B. Eukaryotic cell
C. Natural selection
D. Organic molecules
E. Self-replicating molecule
Which is the correct chronological order?
A. d—>e—>c—>a—>b
B. e—>d—>a—>c—>b
C. d—>e—>a—>b—>c
D. d—>e—>a—>c—>b

32. Which of the following organism, is widely used as a biocontrol in organic farming?
A. Rhyzobiumtropicii
B. Trichoderma viridis
C. Fusarium oxysporum
D. Nostocmuscorum

33. In which of the following places would you except the highest number of plant species per hectare of forest?
A. Corbett National Park
B. Ranthambore National Park
C. Mudumalai National Park
D. Silent Velley National Park

34. Which of the following is the characteristic of a climax community?
A. Wide niche
B. Low species diversity
C. High community production
D. Open mineral cycle

35. Fertilizer washed into rivers by the rain can cause ?
A. Bioaccumulation
B. Biodegradation
C. Biomagnificalion
D. Eutrophication

36. The maximum possible rate of increase of population of a given species under Ideal conditions would depend upon its:
A. Biotic potential
B. Potential natality
C. Carrying capacity
D. Biomass

37. Which of the following regents would be useful for visualizing DNA restriction fragments that have been separated by electrophoresis in an agarose gel and remain in the wet gel?
A. Ethidium bromide
B. 32Pi
C. Alpha 32Pi ATP
D. Diphenylamine

38. Which one of the following is a non-parametric test?
A. t-test
B. X2-test
C. f-test

39. Standard deviation of a data ls 6. When each observation is increased by 1, then the standard deviation of new data is?
A. 5
B. 7
C. 6
D. 8

40. Which of the following involves the combining of two cells without cell walls from different plants?
A. Protoplast fusion
B. Clonal propagation
C. Hybridization
D. Mutant selection

41. Non-polar amino acid residues are found mostly:
A. ln the core of proteins
B. On the surface of proteins
C. On alpha helix
D. In no specific region

42. Given is the random order of chromatin organization:
i. Nucleosome
ii. Solenoid
iii. Double stranded DNA
iv. Chromosome
Choose the correct sequence

43. Respiratory quotient (R.Q) value of a simple sugar is:
A. Zero
B. More than one
C. Less than one
D. Equal to one

44. DNA can be radiolabelled with?
i) P32
ii) I25
iii) N15
iv) S35
A. I, II and III are correct
B. I and III are correct
C. I, III and IV are correct
D. II and IV are correct

45. Which of the following is a food borne toxin?
A. Tetanus toxin
B. Botulinum toxin
C. Cholera toxin
D. Diptheria toxin

46. Which one of the following compounds ls NOT a part of alkaloid class of secondary metabolites?
A. Lignin
B. Indole
C. Tropane
D. Pyrroidine

47. The herbicide, dichlorophenyldlmethylurea, is an inhibitor of
A. Shikimate pathway for biosynthesis of aromatic amino acids.
B. Electron transport from P680 to P700
C. Branch in amino acid pathway
D. Electron transport from P700 to ferrodoxin.

48. An alga is having chlorophyll a, floridean starch as storage product and lacking flagellate cells belongs to the class :
A. Phaeophyceae
B. Chlorophyceae
C. Rhodophyceae
D. Xanthophycea

49. During eukaryotic cell division, metaphase to anaphase transition is regulated by degradation of?
A. Cyclin B1
B. CDK-1
C. Aurora A kinase
D. Polo like kinase

50. Identify the plant species from which artemisinin, an anti-malarial drug, is extracted?
A. Artimisiamaritima
B. Artimisiascoparia
C. Artimisiaannua
D. Cinochona officinali