Uptake and Translocation of Mineral Nutrients

Translocation of organic materials in plants is explained by

The loading of xylem and phloem is bidirectional in plants.

Which among the following statements is incorrect?

Which of the following statements is correct?

Choose the correct definitions for the following respectively.
I) Porins
II) Solute potential
III) Apoplast
IV) Scotoactive stomata
A) open during night and remain closed during day time.
B) lowering of potential due to dissolution of solute.
C) proteins from huge pores in the outer membrane of some bacteria.
D) system of adjacent cell walls that is continuous throughout plant body.

When a plant undergoes senescence, the nutrients may be

Inorganic nutrients are found in the soil in the form of

Chief sink of mineral elements is

Ions from the soil reach the xylem of roots through

Which of the following is/are the best reason why all minerals cannot be passively absorbed by roots?

Element not readily mobilised is

Read the following statements and state as true (T) or false (F):

A. Older dying leaves export much of their mineral content to younger leaves.

B. Structural component like calcium is remobilized.

C. Some of the nitrogen is carried through xylem in the organic form as amino acids and related compounds.

D. Small amount of exchange of materials takes place between xylem and phloem.

The bulk movement of substances through the conducting or vascular tissues of the plant is called:

Identify which of the given statements are correct.

Which of the following statement is incorrect?

Which of the following elements are most readily mobilised?

Which of the following statements is correct?

Concentration of minerals in the soil is usually ________ than the concentration of minerals in the root.

Uptake of most of the minerals by root is

“There is no translocation at low temperature” has been invented by