Question
Aman is twice as efficient as Suman. Both of them began
working together, but Aman stopped after 12 days. Suman then finished the remaining work in 4 days. Determine the time it would take Aman to complete the entire work on his own.Solution
Let the efficiency of Suman be '1e' unit/day Efficiency of Aman = 2 X 1e = '2e' units/day Total work = (1e + 2e) X 12 + 4 X 1e = 36e + 4e = 40e units Therefore, required time = (40e/2e) = 20 days
The scientific name of dammer bee is
___________signifies the separation between the old exocuticle and the epidermis, creating a narrow space that aids in the molting process.
The silk fibres are held together in cocoon by a substance known as
Insects, which feed on one type of food, are called _______.Â
This toxin is derived from Bacillus thuringiensis, alters the ion permeability of the midgut epithelia in insects, leading to gut paralysis and death:
Elytra are the modified, hardened front wings of _____
What is the term used to describe the average density of a pest population around which it fluctuates due to biotic and abiotic factors in the absence o...
Most common silkworm used for the production of Mulberry silk in India isÂ
The process of estimating changes in insect distribution and abundance, providing information about their life history and the influence of biotic and a...
The headquarter of Central Silk Board is located at
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