Diffusion is a ..................... process and is not dependent on .....................

Select the correct option for transport in plants regarding multidirectional and unidirectional transport.

Which property of water allows planktons to move freely on the water surface?

In active absorption of water in plants,the metabolic energy is supplied by:

Which of the following statements is/are not incorrect?
$(i)$ Water and minerals,and food are generally moved by a mass or bulk flow system.
$(ii)$ Bulk flow can be achieved either through a positive hydrostatic pressure gradient or a negative hydrostatic pressure gradient.
$(iii)$ The bulk movement of substances through the conducting tissues of plants is called translocation.
$(iv)$ Xylem translocates organic and inorganic solutes,mainly from roots to the aerial parts of the plants.
$(v)$ Phloem translocates water,mineral salts,some organic nitrogen and hormones,from the leaves to other parts of the plants.

Which property of water allows planktons to float freely on the water surface?