Transpiration has been described as a necessary evil because it is inevitable, but potentially harmful. Which of the following are the after-effects of transpiration ?
i) Absorption of mineral salts.
ii) Regulation of plant temperature.
iii) Wilting and injury in plants.
iv) Ascent of sap.

When asked to set up an experiment to show that 'light is necessary for photosynthesis', a student ran to the school garden and set up the experiment by using a plant growing in the school garden.The experiment failed.His classmates made the following suggestions to get success in the experiment:
Student A : Safranin should be used instead of iodine
Student B : The leaf should not be boiled in alcohol to remove chlorophyll before testing for starch
Student C : Transparent paper should be used instead of black paper strip
Student D : The leaf should be destarched before starting the experiment. 
 The correct suggestion is given by:

Reduction of carbondioxide to carbohydrates occurs during

In submerged plants like Hydrilla carbondioxide diffuses directly through

Which of the following  molecules are located in the thylakoid membrane?

The lower side of plant leaf contains

What happens when the left ventricle of human heart contracts ?

Intact structure of  ___________ is required for  glucose to be formed.

The chlorophyll and other pigments of the chloroplasts are

CO₂  enters through stomata into the cells by