Question
A motor-cycle covers 160 km with a speed of 70 km/hr.
find the speed of the motor-cycle for the next 170 km journey so that the average speed of the whole journey will be 90 km/hr.Solution
Average speed of whole journey = 90 km/hr Using the formula, average speed = 2xy/(x + y)  x = speed of first 160 km = 70 km/hr 90 = 2 x (70 x y)/(70 + y) = 126 km/hr
The term that describes as sharp reduction in a genetic variation in a population following migration to and colonization of new area by a species is ca...
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
Self pollination leads to a very rapid increase in ……………………….
Almost all gymnosperms are generally ……………………. In nature
The variation in the restriction DNA fragment lengths between individuals of a species is called:
In Bulk breeding method, individual plant selection is done after population attains ……………….
...The hybrid progeny of single cross and an inbred lines is called
What term is used to describe a new plant produced through vegetative reproduction?
Which among the following factors is/are not essential for commercial exploitation of heterosis?
Which of the following statement is false regarding Heterosis?
