Biology Class 11 Chapter - 6
Prokaryotes - 12
1.
Bacteria undergo?
a) none of these
b) logarithmic growth
c) exponential growth
d) both of these
2.
During lag phase of bacterial growth?
a) growth is declining
b) growth is steady
c) growth is maximum
d) no growth occurs
3.
The maximum growth of bacteria takes place during?
a) log phase
b) death phase
c) lag phase
d) stationary phase
4.
The rate of reproduction and death of bacterial cells becomes equal during?
a) stationary phase
b) lag phase
c) death phase
d) log phase
5.
When thier is exhaustion of nutrients and cumulation of toxic waste products, the bacteria?
a) synthesize thier products rapidly
b) are not affected
c) multiply rapidly
d) starts dying
6.
The decline phase of bacterial growth is?
a) stationary phase
b) lag phase
c) death phase
d) log phase
7.
In binary fission, the bacterial cell divides into?
a) 1 daughter cell
b) 4 daughter cells
c) 2 daughter cells
d) 3 daughter cells
8.
During favourable conditions, a single bacterium divides into two in?
a) 10 minutes
b) 25 minutes
c) 15 minutes
d) 20 minutes
9.
The sexual reproduction in bacteria takes place through?
a) multiple fission
b) binary fission
c) genetic recombination
d) fragmentation
10.
The two strains of E. coli studied in conjugation were?
a) X-10 and Y-24
b) X-10 and X-24
c) Y-10 and Y-24
d) Y-10 and X-24
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