Contents

Variations:

Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).


Which of the following two individuals are not genetically identical?
a) those who produced asexually    
b) those who produced by budding
c) those who produced sexually      
d) those who produced by vegetative propagation

c

Variations are differences in……….between individuals of the same species.
a) size    

b) shape                

c) traits 

d) colors


c

Why variations within a species are essential?
a) for mating                       

b) for feeding
c) for survival    

d) for identification

c

In sexually reproducing organisms, which of the following is/are responsible for genetic variations?
a) crossing over                   

b) mutations
c) diet                                    

d) both a and b

d

Which of the following environmental condition/s cause variations in individuals of same species?
a) diet                                    

b) humidity
 c) temperature                    

d) all of these

d