Biology Questions and Answers for Railway | SSC CGL Exams

1).Bacterium which is spherical in shape is ………….. ?
a) Coccus
b) Chitin
c) Proteins
d) Cellulose

2).The cell wall of Bacterium is made up of ………….. ?
a) Peptidoglycan
b) Proteins
c) Chitin
d) Cellulose

3).Bacterial ribosomes are of…………… ?
a) 70 S type
b) 80 S type
c) 50 S type
d) 30 S type

4).The circular double stranded DNA occurs in the cytoplasm of bacteria is called……. ?
a) Plasmid
b) Gas vacuole
c) Nucleoid
d) Polysome

5).Bacteria involved in the nitrogen fixation are…………. ?
a) Rhizobium
b) Nitrosomonas
c) Pseudomonas
d) Lactobacillus

6).Griseofulvin is an antibiotic produced by……………… ?
a) Bacillum bacteria
b) Staphyltcoccus bacteria
c) Leuconstoc sp.
d) Penicillium sp.

7).In Penicillium, asexual spores produced exogenously on phialides are called……… ?
a) Oidia
b) Sporangia
c) Conidia
d) Oogonia

8).The branched conidiophores bears flask shaped structures called……… ?
a) Conidia
b) Oidia
c) Phialides
d) Oogonia

9).Bacteria that is responsible for fermentation of dairy milk is……….?
a) Lactobacillus
b) Acetobacter
c) Ray bacillus
d) Rhizobium

10).Which of the following is a rod shaped virus?
a) TMV
b) Coccus
c) Bacillus
d) Nostoc

Answers :
1). a
2).a
3).a
4).a
5).a
6).d
7).b
8). b
9). a
10).a