Question
In a bio gas plant the population of yeast bacteria
increases at a rate of 19% per annum but there is an additional annual increase of 1% in population due to various other inputs in the system. The percentage increase in the yeast population after 2 years is:Solution
The population of bacteria increases by 19% per annum and 1% due to additional factors, so every year, there is a net increase of 20% in yeast population. Let the population at present be x. Population after 2 years = x × 120/100 × 120/100 = 144x/100 = 1.44x % increase in population = [(1.44x - x)/x] × 100 = 44
Under what agricultural circumstances are pest outbreaks most likely to be observed?
Which of the following rice cultivation methods is most water-use efficient and being increasingly adopted to address water scarcity?
A band of suberin layer develops all around the cell in the middle of the transverse and radial walls. This suberin is called ____________ strip.
‘Allahabad Safeda’ is the variety of :
Match List-I with List-II and select the correct - answer using the codes given below the lists.
Which one is an indicator plant for acidic soil?
Which state is the highest producer of chili and turmeric?
What is a common emission from combustion engines used in transportation?
Inheritance of ABO blood group system is an example of____
Which parameter describes the soluble salts content in irrigation water and is measured in ds/m?
Relevant for Exams:
