We need to replace ‘was’ with ‘were’ as in the latter part of the sentence it has been mentioned that there were more than one letter exchange and in past tense ‘were’ is used for plural subjects. Hence, ‘there were some letter exchanges’ is correct.
Which one of the following stain is used for staining of the nematodes?
Rice is one of the important Kharif season crop. The inflorescence of rice is called____
Sugarcane is a heavy feeder crop but higher doses of nitrogen during ripening stage, ____ the sucrose content in maturing cane.
Trashing, Arrowing and Ratooning are common practices in
The false smut of sugarcane can be controlled by adopting which of the following practice?
In which of the following stage cell cycle DNA replication take place?
Which variety of rice is tolerant to iron toxicity
Which one of the following is variety of triticale
What is quantum yield in relation to the growth of plants?
The photolysis of water during photosynthesis occurs in the presence of following mineral(s):
