Which of the following pathogenic disease could have the symptoms like mosaic formation, leaf rolling and curling, yellowing and vein clearing, dwarfing and stunted growth?

  • . Viral

  • . Bacterial
  • . Fungal
  • . Deficiency syndrome.

Potato Spindle Tuber disease is caused by –

  • . Virus
  • . Viroid
  • . Prion
  • . Fungus

Which of the following disease is not caused by Prions?

  • . Bovine spongiform encephalopathy (BSE) in cattles
  • . Cr–Jacob disease (CJD) in humans.
  • . Mad cow disease in cattle
  • . Potato Spindle Tuber disease

Which of the following statement is correct?

  • . Fungi prepare food for algae.
  • . Fungi provide shelter and absorb mineral nutrients and water for its partner.
  • . The algal component is known as mycobiont and fungal component as phycobiont,
  • . Lichens are symbiotic associations between algae and fungi which are heterotrophic and autotrophic, respectively.

Select the right match -

  • . Aplanospore                 Non-motile                  Exogenous
  • . Conidia                        Motile                         Endogenous
  • . Zoospore                      Motile                         Endogenous
  • . Zygospore                    Motile                         Exogenous

Identify the figure and the labellings A and B.

  • . Bacteriophage,A- dsDNA; B- Capsid

  • . TMV; A- dsDNA; B- Capsomere
  • . TMV; A- ssDNA; B- Capsid
  • . TMV; A- ssRNA; B- Capsid

Identify the correct labellings.
  • . A- head, B- Collar, C- Sheath, D- Tail
  • . A- head, B- Collar, C- Neck, D- Tail fibre
  • . A- head, B- Collar, C- Sheath, D- Tail fibre
  • . A- head, B- Neck, C- Sheath, D- Tail fibre

Identify the following pictures (b) and (c).
  • . b- Aspergillus; c- Mucor
  • . b- Aspergillus; c- Agaricus
  • . b- Agaricus; c- Mucor
  • . b- Mucor; c- Agaricus

Domain Eukarya includes how many kingdoms (with respect to six kingdom system)?

 

  • Two    

  • Three
  • One   
  • Four

Match each item in Column I with one item in Column II regarding pathogenic protozoans and chose your answer from the codes given below:
Column I                                   Column II
(disease)                                 (causative organism)
I. Malaria                                 1. Sporozoan
II. Dysentery                            2. Amoeboid
III. Sleeping sickness                3. Ciliate
IV. Balantidiasis                        4. Flagellate
Codes:
        I   II   III   IV
  • .    1   2    3     4
  • .    2   1    4     3
  • .    2   1    3    4
  • .    1   2    4    3

Which of the following are correct for viroids?
(I) Discovered by Pasteur.
(II) Smaller than viruses.
(III) Found to be free DNA.
(IV) Cause potato spindle tuber disease.
(V) Nucleic acid has high molecular weight.

  • I, III, IV

  • II, III, IV, V

  • II, IV

  • II, IV, V

Which of the following form the basis for the division of the kingdom fungi into various classes?
(I) Mode of spore formation and fruiting bodies.
(II) Morphology of the mycelium.
(III) Mode of nutrition and occurrence.

  • I, II

  • I, III

  • II, III

  • Only I

Which of the following statements is incorrect regarding Mycoplasma?
  • These organisms are naturally resistant to antibiotics that inhibit protein biosynthesis
  • These organisms are naturally resistant to antibiotics that target the cell wall
  • These organisms are naturally resistant to antibiotics that inhibit DNA replication
  • These organisms are naturally resistant to antibiotics that inhibit folic acid metabolism

Identify A, B, C in the given diagram:

 

 

A

B

C

1

Sheath

Head

Collar

    

2

Collar

Head

Sheath

    

3

Sheath

Collar

Head

    

4

Head

Collar

Sheath
  • 1
  • 2
  • 3
  • 4

Paramecium and Amoeba are placed in kingdom protista with

  • Anabaena and Colletotrichum

  • Anabaena and Chlorella

  • Chlamydomonas and Colletotrichum

  • Chlorella and Chlamydomonas

Which of the following is not the characteristic of the class to which Mucor belongs?

  • Mycelium is aseptate and coenocytic

  • Zygospore is formed by fusion of two gametes

  • Asexual reproduction takes place by zoospores or aplanospores

  • Gametes are always dissimilar in morphology

Which of the following statements are true for Heterotrophic bacteria?

  • They fix nitrogen in legume roots.

  • The majority are important decomposers

  • Helpful in making curd from milk and production of antibiotics

  • All of these

Who showed that viruses could be crystallized and crystals consists largely of proteins?

  • D.J. Ivanowsky

  • M.W. Beijerinek

  • W.M. Stanley

  • T.O. Diener

Which of the following is not true for chrysophytes?

  • Found in fresh water as well as in marine environment.

  • Cell membranes are embedded with silica.

  • Most of them are photosynthetic.

  • Microscopic and float passively in water currents.

Which of the following organisms do not possess cell wall?

  • Plant cell

  • Bacteria

  • Fungi

  • Amoeba

Which among the following is not a prokaryote?

  • Saccharomyces

  • Mycobacterium
  • Nostoc
  • Oscillatoria

Select the wrong statement:

  • Cell wall is present in members of Fungi and Plantae

  • Mushrooms belong to Basidiomycetes
  • Pseudopodia are locomotory and feeding structures in Sporozoans
  • Mitochondria are the powerhouse of the cell in all kingdoms except monera

After karyogamy followed by meiosis, spores are produced exogenously in
  • Neurospora
  • Alternaria
  • Agaricus
  • Saccharomyces
Which of the following organisms are known as chief producers in the oceans ?
  • Dinoflagellates
  • Diatoms
  • Cyanobacteria
  • Euglenoids
Ciliates differ from all other protozoans in

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?
One of the major compound of cell wall of most fungi is

 

Which one is the wrong statement?

Which of the following are most suitable indicators of SO2 pollution in the environment?

Which one of the following matches is correct? 

(a)PhytophthoraAseptate MyceliumBasidiomycetes
(b) AlternariaSexual reproduction AbsentDeuteromycetes
(c) MucorReproduction by conjugationAscomycetes
(d) AgaricusParasitic fungusBasidiomycetes
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