Question
Which allelopathy type involves the release into the
environment of compound that is toxic after chemical modification by micro-organisms?ÂSolution
Functional allelopathy is the release of substances that are toxic or a result of transformation by micro-organism .
If 'U' is the prime number 17, then find the fourth proportion of (U + 3), (U - 7) and (U + 5).
In a class of 250 students, 150 are girls and remaining are boys. Among boys, the ratio of number of boys who are wearing caps to those who are not wear...
A grandfather leaves Rs. 14,350 to be divided among 4 sons, 3 daughters and 3 grandson. If each daughter receives six times as much as each grandson and...
Three numbers are in ratio 2:3:5. If the sum of the squares of those three numbers is 342 then find the sum of the three numbers.
Rs.14400 was divided among A, B and C in the ratio 3:4:5. B kept Rs.1000 for himself, gave Rs.800 to his mother and divided the remaining money among hi...
The ratio of the incomes of Vineet and Vidya is 15:8 respectively. Vineet saves 40% of his income while Vidya saves 25% of his income. The sum of their ...
In a class, the ratio of number of boys to number of girls is 10:7. If 5 boys joined the class and 3 girls left the class, then the ratio becomes 5:3. F...
Two numbers are respectively 30% and 40% more than a third number. Find the ratio of two numbers.
Two years ago the ratio of annual salary of three friends P, Q and R is 4 : 3 : 5. Every year since then the salary of P, Q and R increases by 10%, 12% ...
Number of faculties in Physics and Biology in an institute is in the ratio of 3:5 respectively. If 75 more faculties join Physics, while 40 more faculti...
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