Question
The ratio of the speed of a boat in still water to the
speed of the stream is 4:1. If the boat takes 10 hours to cover 240 km downstream, find the total time taken by the boat to cover 180 km upstream and 180 km downstream.Solution
ATQ, Let the speed of the boat in still water be 4x km/h and the speed of the stream be x km/h. From the downstream trip, 
Speed of boat in still water = 4x = 16 km/h Speed of stream = x = 4 km/h Time taken to cover 180 km upstream and 180 km downstream: 
Which insecticidal compound primarily interferes with the axonal transmission, prolonging the closure of sodium gated channels in the nervous system?
This toxin is derived from Bacillus thuringiensis, alters the ion permeability of the midgut epithelia in insects, leading to gut paralysis and death:
………………….. is associated to achieve the goal of Sweet Revolution in country
Insects are classified into the phylum_______.Â
___________signifies the separation between the old exocuticle and the epidermis, creating a narrow space that aids in the molting process.
Which class of pesticides, known for their nerve poison properties and containing compounds like carbaryl, made a significant impact in the 1950s?
Which of the following is not matched correctly?Â
The process of estimating changes in insect distribution and abundance, providing information about their life history and the influence of biotic and a...
Chili leaf curl disease is spread by vector_________
Which of the following are the characteristic features of an Insect?Â
Relevant for Exams:
