Question
Select the most suitable word from (a), (b), (c) and (d)
given below each sentence to fill in the blanks I have been surfing internet. _________ the last two hours.Solution
The word 'for' is used to show a period of time, be it in the past, present or future.The word 'since' is used to refer to a time that has begun in the past and is still continuing. Use 'from' to mean the starting time and 'to' for the end or finish time. Note: To can be a synonym of until and till so it's perfectly correct to use for with until or till.
Which mode of reproduction involves the formation of plants without the fusion of male and female gametes?
Term which refers to the pairing of homologous chromosomes during meiosis and is essential for crossing over?
The term given to the ability of single cell to divide and produce all the differentiated cell in the organism.
Number of Nuclei present in a fully developed pollen grain after division of generative cell :
……………………………… studies are  used  for  identification  of biochemical markers.
...………………………………. provides maximum opportunity for the breeder to use his skills for selection of desirable plants from segregating ...
Almost all gymnosperms are generally ……………………. In nature
When pollen from a flower of one plant falls on the stigmas of other flowers of the same plant, as in Maize is known as
Law which is demonstrated by a 3:1 phenotypic ratio in the F2 generation of a monohybrid cross?
In backcross method of breeding,  the  hybrid  and  the  progenies  in  the  subsequent  generation  are  repeatedly ba...
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