Identify the correct set of statements related to the movement of substances thr

Question

Identify the correct set of statements related to the movement of substances through vascular tissues.
I. Xylem mainly translocates water, minerals salts and also organic solutes.
II. Phloem mainly translocates a variety of organic solutes and also inorganic solutes.
III. Xylem transports substances from roots to aerial parts of the plants.
IV. Phloem transports substances bidirectionally.

Options:

A . I & III only

B . II & IV only

C . I & II only

D . I, II, III & IV

Answer: Option D
:
D
I, II, III & IV are the correct set of statements related to the movement of substances through vascular tissues.
Xylem transports mainly water, mineral salts, and inorganic solutes from the roots to aerial parts of the plant. Although it was traditionally believed that xylem transported only water and minerals, xylem sap analysis shows the presence of some organic solutes also. Especially elements such as nitrogen, some amount of sulphur and phosphorous are carried as amino acids and related compounds. Similarly phloem too transports inorganic solutes, though they primarily transport sugars and other organic solutes, however here the transport is bi-directionalfrom leaves and storage organs to other parts.

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