Typhoid fever is caused by a species of

1.  Streptococcus
2.  Staphylococcus
3.  Salmonella
4.  Mycobacterium

 

1.  bacteriophages
2.  geminiviruses
3.  lysogenic viruses
4.  retroviruses

1.  one
2.  two
3.  four
4.  seven

1.  senescent
2.  dividing rapidly
3.  storing food material
4.  differentiating

1.  mimicry
2.  predation
3.  adaptation
4.  camouflage

1.  present in plants cell at metaphase stage
2.  inclusion bodies in bacteria
3.  produced in insects during metamorphosis
4.  chromatophores in animal’s skin

1.  Robertson
2.  Robert Hooke
3.  Singer and Nicholson
4.  Gorter and Grendel