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Speed of boat ‘A’ upstream = 180/6 = 30 km/h Speed of boat ‘B’ upstream = 90/2 = 45 km/h Speed of the boat ‘A’ in still water = 30 + 10 = 40 km/h Speed of the boat ‘B’ in still water = 45 + 10 = 55 km/h Required percentage = (40/55) × 100 = 72.7%
The Bt toxin in Bt crops kills insects by:
The Competitive Exclusion Principle states that:
Which vitamin is essential for blood coagulation?
Which plants have root nodules?
What is the name of the dividing tissue in plants?
Respiration occurs in which part of the cell?
Nyctalopia, or night blindness, is caused by a deficiency in which vitamin?
Which of the following statements about antibodies is correct?
A rear-view mirror for driving is –
The wilting of plants occurs due to: