Transport in Pl...

Nobel prize in 1991 for discovering the single ion channels in cell was awarded to

Which of the following shows that metabolic energy is required in the absorption of ions

Following are a few definitions of osmosis. Read carefully and select the correct definition.

The translocation of organic solutes in sieve tube members is supported by- 

Subhash puts 10 g of raisin in 100 mL of distilled water at $$20^{\circ}$$ C. Anurag puts the same amount of raisins in 100 mL of distilled water at $$40^{\circ}$$ C After an hour, percentage of water absorbed by raisins will be -

While performing an experiment with raisins a student recorded the following
observations :
Mass of water taken in the beaker $$=$$ 30g
Mass of raisins before soaking $$=$$ 7g
Mass of raisins after soaking water $$=$$ 10g
Mass of water left in the beaker after experiment $$=$$ 25g
On the basis of these observations the percentage of water absorbed by raisins is :

Why is transpiration important for plants?

Ten raisins each were taken in Petri dishes, X and Y. X contained ice cold water while
Y contained distilled water at room temperature. After two hours the raisins in each
case were weighed again. The expected observation is :

To determine the percentage of water absorbed by raisins, the step which must not be
followed by student is :

Following five steps are generally followed in the experiment on determining the
percentage of water absorbed by raisins. However these steps are not in proper sequence
(1) Measure the mass of dry raisins
(2) Measure the mass of soaked raisins
(3) Take a clean beaker and put dry raisins in it.
(4) Pour water into the beakers so that the raisins are dipped
(5) After about 90 minutes remove soaked raisins from the beaker and wipe them with filter paper.
The correct sequence of these steps is :