B.Sc. Semester 1^st Botany Paper 1
Multiple Choice Questions (MCQ)

MOCK TEST

B.Sc Semester I Botany Paper 1
Multiple Choice Questions

Quiz

 

1. The conquest of the Aztec empire in Maxico was made possible by a ……epidemic that ravaged Maxico city
   1.   Measles
   2.   Smallpox
   3.   Rabies
   4.   Influenza
2. Edward jenner began inoculating humans with material form……lesions
   1.   Smallpox
   2.   Avianpox
   3.   Cowpox
   4.   Chickenpox
3. Viruses require……for growth
   1.   Plants
   2.   Animal
   3.   Bacteria
   4.   Living cells
4. Holes produced in bacterial Lawns by viruses are called……
   1.   Colonies
   2.   Plaques
   3.   Patches
   4.   Lysis
5. Which is NOT true of virions
   1.   Contain DNA
   2.   Contain RNA
   3.   Are extracellular
   4.   Reproduce independently
6. Which of following are obligate intracellular parasits?
   1.   Viruses
   2.   Chlamydia
   3.   Rickettsia
   4.   All of the above
7. Plant viruses may be cultived in …..
   1.   Tissue culture
   2.   Culture of separated cells
   3.   Cultures of protoplants
   4.   All of the above
8. Viruses can be purified based on their size and density by use of
   1.   Gradient centrifugation
   2.   Differential centrifugation
   3.   Precipitation
   4.   Filtration
9. Which of the following may affect proteins and nucleic acids but not viruses
   1.   Denaturation
   2.   Enzyme treatment
   3.   Heat
   4.   All of the above
10. The most popular indirect method of counting virus particles is ……
    1.   Microscopically
    2.   By hemagglutination assay
    3.   By plaque assay
    4.   By counting plaque -forming untis
11. What kind of embryo is often used for viral assays?
    1.   Mouse
    2.   Rat
    3.   Cat
    4.   Chicken
12. Enveloped viruses have a …… shape.
    1.   Icosahedral
    2.   Helical
    3.   Hexagonal
    4.   Roughly spherical
13. The most effectient way to enclose a space is within a/an
    1.   Sphere
    2.   Cube
    3.   Icosahedron
    4.   Helix
14. Usually viruses are separated into several large groups based primarily on
    1.   Nature of the host
    2.   Nucleic acid characteristics
    3.   Capsid symmetry
    4.   Presence of an envelope and other sensitivity
15. An alga is ……
    1.   Thallus shaped body of only green colour
    2.   Moss like body with small stem and simple leaves
    3.   Plant body differentiated into root stem and leaves
    4.   None of these
16. In blue green algae photosynthesis occurs in ……
    1.   Chloroplasts
    2.   Chromoplasts
    3.   Chromatophores
    4.   Photosynthetic lamellae
17. During rainy season the ground become slippery due to dense growth of
    1.   Algae
    2.   Mushroom
    3.   Non of these
    4.   Fingi
18. Red colour of the red algae is due to the presence of
    1.   Fucoxanthin
    2.   Phycocyanin
    3.   Carotene
    4.   Phycoerthrin
19. Simple types of reproduction in plants is found in …..
    1.   Spirogyra
    2.   Ulothrix
    3.   Volvox
    4.   Chlamydomonas
20. In which of the following alage, isogamy, anisogamy and oogamy all are found?
    1.   Chlamydomonas
    2.   Spirogyra
    3.   Oscillatoria
    4.   Anabaena
21. The percentage (%) protein in chlorella is
    1.   75
    2.   50
    3.   27
    4.   40
22. The minimum chromosome number recorded in algae is ……
    1.   N = 4
    2.   N = 2
    3.   N = 6
    4.   N = 7
23. The algae used for the construction os soundproof building is …..
    1.   Chara
    2.   Diatom
    3.   Laminaria
    4.   Ulothrix
24. Red snow is caused by which of the following in alpine region?
    1.   Oscillatoria
    2.   Spirogyra
    3.   Chlamydomonasnivalis
    4.   Batrachospermatum
25. To which kingdom to the cyanobacteria belong?
    1.   Fungi
    2.   Eubacteria
    3.   Protista
    4.   Plantae
26. Which of the following fungi is most likely to be found within reticuloendotelial cells
    1.   Histoplasma capsulatum
    2.   Sporothrix schenckii
    3.   Cryptococcus neoformans
    4.   Candida albicans
27. Aspergillosis is recognized in tissue by the presence of …..
    1.   Metachromatic granules
    2.   Psuedohyhae
    3.   Septate hyphae
    4.   Budding cells
28. Fungi often colonize lesions due to other causes. Which of the following is least likely to be present as colonizer.
    1.   Candida
    2.   Sporothrix
    3.   Mucor
    4.   Aspergillus
29. A girl who pricked her finger while pruning some rose bushes develops a local pustule that progresses to an ulcer. Several nodules then develop along the local lymphatic drainage. The most likely agent is
    1.   Aspergillus fumigatus
    2.   Sporothrixschenckii
    3.   Cryptococcus neoformans
    4.   Candida albicans
30. Immunocompromised preson are suffered from several fungal diseases. which of the following is the least frequently associated …..
    1.   Cryptococcus neoformans
    2.   Aspergillus fumigatus
    3.   Malassezia furfur
    4.   Mucor species
31. Each of the following statement concerning cryptococcus neoformans are correct EXCEPT……
    1.   Its natural habital is the soil especially associated with pigeon feces.
    2.   Budding yeasts are fond ins the lesion.
    3.   The intial site of infection is usually the lung.
    4.   Pathogenesis is related primarily to the production of exotoxin A.
32. Fungal cells that reproduce by budding are seen in the infected tissue of patients with …..
    1.   Candidiasis cryptococcosis and sporotrichosis
    2.   Mycetoma candidiasis and mucormycosis
    3.   Tineacorporis tineaunguinm and tineaversicolor
    4.   Sprototrichosis mycetoma and aspergillosis
33. Which of the following is not a characteristic of histoplasmosis
    1.   Person to person transmission
    2.   Specific geographic distribution
    3.   Yeast is issue
    4.   Mycelial phase in the soil
34. Infection with dermatophyte is most often associated with
    1.   Intravenous drug abuse
    2.   Inhalation of the organism from contaminated bird feces
    3.   Adherence of the organism to perspiration moist skin
    4.   Fecal-oral transmission
35. Each of the following statements concerning candida albicans is correct except …..
    1.   C. albicans is a budding yeast that forms psuedohyphae when it invades tissue
    2.   C. albicans causes thrush
    3.   C. albicans is transmitted primarily by respiratory aerosol.
    4.   Impaired cell mediated immunity is an important predisposing factor to disease
36. A basidium is typically observed in the common …
    1.   Gilled mushroom
    2.   Bread mold
    3.   Lichen
    4.   Chytrid
37. Which of the following is not a characteristic of the fungi
    1.   They have cell walls made of chitin
    2.   They are all absorptive heterotrophs
    3.   Mitosis tekes place within the unclear membrane
    4.   They are all motile
38. How many species of fungi are thought to exist
    1.   1.5 million
    2.   1500
    3.   150000
    4.   1.5 billion
39. Mycorrhiza exhibits the phenomenon of …..
    1.   Endemism
    2.   Symbiosis
    3.   Parasitism
    4.   Antagonism
40. The black rust of wheat is a fungal disease caused by ….
    1.   Albugo candida
    2.   Puccinia graministritici
    3.   Melampsoralini
    4.   Claviceps purpurea