Identify the correct statements from the following:
$I-$ Xylem transports only inorganic nutrients.
$II-$ Phloem transports only organic materials.
$III-$ There is an exchange of materials between xylem and phloem.
$IV-$ In xylem,inorganic nitrogen is present along with organic nitrogen in the form of amino acids and other components.
$V-$ Organic phosphorus and sulfur are also found in xylem tissue.

Which of the following statements are correct regarding the factors affecting the absorption of water by plants?
$(i)$ In plants,the rate of water absorption is minimum at a soil temperature of $20^{\circ}C$ to $30^{\circ}C$.
(ii) The presence of capillary water is essential in the soil.
(iii) Poorly aerated soil shows a poor absorption rate.
(iv) $A$ low transpiration rate accelerates the rate of absorption of water in irrigated soil.
$(v)$ $A$ high concentration of solutes in soil water reduces the rate of absorption of water.

The ringing experiment is related to:

The transport of gases,hormones,photosynthates,and organic solutes in plants is:

Which of the following facts proves that the translocation of materials occurs through the phloem?

- Transport of water and minerals in $Xylem$ is $\underline{A}$.
- Transport of organic and mineral nutrients is $\underline{B}$.