Question
‘X’ and ‘Y’ together can complete a work in 16
days, while ‘Y’ and ‘Z’ together can complete the work in 10 days. If ‘Y’ takes 20 days to complete the work alone then find the time taken by all three together to complete 45% of work.Solution
Let the total work = 80 units Efficiency of (X + Y) = 80/16 = 5 units/day Efficiency of (Y + Z) = 80/10 = 8 units/day Efficiency of ‘Y’ = 80/20 = 4 units/day Efficiency of (X + Y + Z) = (1 + 4 + 4) = 9 units/day Required time taken = (0.45 × 80)/9 = 4 days
Which enzyme catalyzes the conversion of phosphoenolpyruvate (PEP) and CO₂ into oxaloacetate in the C₄ pathway?
Cell division in which one cell with two set of chromosomes give rise to four cells. The terminology is referred to as
The cellular organelle which control functions of cell by having almost all the genetic information of cell is coined by
In electron transport system, ____ is the terminal electron acceptor.
What structure controls the opening and closing of stomata?
Which statement about transpiration is true?
In aerobic respiration, on oxidation of 1 molecule of glucose, ______ ATP is produced.
Which pigment is known for protecting the photosynthetic apparatus from photooxidation?
Which of the following is an example of CAM plant?
What is the primary role of abscisic acid (ABA) in stomatal movement?
