Biological Classification Ques 140
140. Rickettsiae constitute a group under
(a) bacteria
(b) viruses
(c) independent group between bacteria and viruses
(d) fungi
Show Answer
Answer : c
Hints & Solutions
(c) Rickettsia are tiny obligate, intracellular parasites found in blood sucking insects like lices, mites, ticks. They were first observed by Ricketts in 1909 but it was properly described by Rocha-lime 1916, who named them as Rickettsia. They have mucopeptide cell wall with DNA as genetic material and are independent entity causing diseases like Q-fever, typhus etc.
BETA
