Osmoregulation in Paramecium is a function of
a) Contractile vacuole b) Trichocysts c) Cytopyge d) Cytostome
HIV is classified as a retrovirus because its genetic information is carried in
Which is correct?
Thermococcus,Methanococcus and Methanobacterium are
In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statement is true about archaea?
Read the following statements regarding archaebacteria and select the correct option
I. Archaebacteria differs from other bacteria in having different cell wall structure
II. Their cell wall is made up of cellulose and contains high amount of unsaturated fatty acid, which is responsible for their survival in extreme conditions
III. Thermoacidophiles have dual ability to tolerate high temperature as well as high acidity
Which of the following bacteria plays a main role in recycling the nutrients like nitrogen, phosphorus, iron and sulphur?
a) Chemoheterotrophic bacteria b) Chemosynthetic autotrophic bacteria
c) Parasitic bacteria d) Saprophytic bacteria
In some fungi, two haploid cells results in diploid cells. In some cases, dikaryon stage occurs in which two nuclei are present within a cell. This phase is known as
What are episomes?
Soft-rot disease of sweet potato is caused by
The process which cannot take place in the absence of virus is
Prions are
The cyanobacteria are
Which one of the following is correctly matched?
Which one of the following is a characteristics feature of Chrysophytes?
What happens in anterior part of Amoeba at the time of formation of pseudopodia?
Fungi shows vegetative reproduction by all of the following except
Most abundant bacteria are
The replacement of two kingdom grouping by five kingdom classification was proposed in the year
Which part of an animal virus is not reproduced in multiple copies?
Difference between virus and viroid is
Galic acid used in making ink is obtained with the help of
During conjugation in Paramecium