Minerals absorbed by the roots travel up the xylem. How do they reach the parts where they are needed most? Do all the parts of the plant get the same amount of minerals?

Minerals absorbed by the roots travel up the xylem. How do they reach the parts where they are needed most ? Do all the parts of the plant get the same amount of the minerals ?

Transpiration helps to transport minerals from the soil to all parts of the plants

(a) A beam of monochromatic light undergoes minimum deviation through an equiangular prism. How does the beam pass through the prism with respect to its base? (b) If white light is used in the same way as in part (a) above, what change do you expect in the emergent beam? (c) What conclusion do you draw about the nature of white light in part (b)?

Does the growth pattern in plants differ from that in animals? Do all the parts of plant grow indefinitely ? If not, name the regions of plant, which can grow indefinitely

Plants like potato, sugarcane do not require seeds for producing new plants. How do they produce new plants? Give two other examples where new plants are produced in the same way.

Which of the following statements is/are 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.

Transpiration has more than one purpose. Which of the following is not the purpose of transpiration? (a) Creates transpiration pull for absorption and transport in plants. (b) Cools leaf surfaces by evaporative cooling (c) Transports minerals from the soil to all parts of the plant. (d) Gives high tensile strength to water column present in xylem. (e) Translocation of sucrose from source to sink