Question
Two pipes 'P' and 'Q' together can fill a tank in 16
minutes while 'Q' alone can fill the tank in 24 minutes. How much time does pipe 'P' alone need to fill the tank?Solution
Let the total capacity of the tank be 48 litres. {LCM (16 and 24)} So, the efficiency of pipe 'Q' = 48 ÷ 24 = 2 litres/minute Combined efficiency of pipe 'P' and 'Q' = 48 ÷ 16 = 3 litres/minute So, the efficiency of 'P' = 3 - 2 = 1 litre/minute So, the required time = 48 ÷ 1 = 48 minutes
Which of the following tissue has primary function of supporting the plant organs?Â
In plant, the cell walls of ___ cells are coagulated with the deposition of suberin which makes them impervious to water and air.Â
The precursor of auxin is _____
Which hormone is known as stress hormone that plays a important role in plant leaves abscission and abiotic stress tolerance
Which of the following statement is not correct regarding the description of Parenchyma tissue?Â
Which of the following element has a perforated cell wall?
In the conditions of severe drought, the release of ___ plant hormone starts which closes the plant stomata.
Site for protein synthesis is _______
The enzyme synthesises the complementary DNA strand of the desired gene from its mRNA is?
Cut or excised leaves remain green for long if induced to root or dipped in_____
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