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ATQ, Let the speed of the stream be = u km/h. Speed of the boat in still water = 4u km/h. Using the equation: Downstream speed = 4u + u = 5v km/h. Using the downstream equation:
From equations (I) and (II):
Thus, the speed of the stream is 4 km/h.
Elytra are the modified, hardened front wings of _____
The silkworm larva ceases to eat and begins spinning silk all over its body from ____
Typical symptom of Pink stem borer (Sesamia inferens) infestation in Wheat appears as:
The total number of abdominal legs in the larval stage of the mustard sawfly is ____.
___________signifies the separation between the old exocuticle and the epidermis, creating a narrow space that aids in the molting process.
Which of the following are the characteristic features of an Insect?
Which insecticidal compound primarily interferes with the axonal transmission, prolonging the closure of sodium gated channels in the nervous system?
Trichogramma japonicum is a natural parasitoid which is used to control ________
This Chemical known as “Apple Factor” which is released by Malus sp. and acts as an attractant to Aphis pomi is:
The silk fibres are held together in cocoon by a substance known as