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Meristem culture is mostly used for micro propagation and to obtain ……… plants.
a) virus free                          
b) parasite free
c) bacteria free    
d) all of these

d

Explanation: because meristem are devoid of viruses due to the absence of vascular system in them


Anther-culture is also known as………
a) microspore culture
b) pollen culture
c) micro propagation
d) both a and b

d

Which of the following haploid cells present in the microspore begin to divide and produce haploid callus?
a) generative cells               
b) tube cells
c) both a and b    
d) none of them

c

Explanation: a haploid callus can be grown into a haploid plant


A diploid plant can also be obtained if chromosomal doubling is induced by the…….treatment.
a) auxin                                
b) cytokinin
c) EDTA                                               
d) Colchicines

d

Explanation: Colchicine is a medication used to treat gout and Behçet's disease. In gout, it is less preferred to NSAIDs or steroids.


 The animal cell cultures are veing extensively used in production of ……..
a) vaccines and monoclonal antibodies
b) pharmaceutical drugs
c) cancer research and genetic manipulations
d) all of these

d

In animals, a cell culture which is initiated by the cells removed from an animal’s organ is called as………
a) organotypic culture
b) histotypic culture
c) organ culture  
d) primary cell culture

d

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