Question

The tissues which transport food materials in plants are
A) Phloem
B) Xylem
C) Parenchyma
D) Phloem and xylem both

Answer 1

Hint: Plants synthesize their own food and food is transported to all tissues from apex to bottom.Plants synthesize their food using chloroplast and are also known as autotrophic.

Complete answer:
 Xylem tissues are responsible for water transport and likewise, food is also transported by phloem tissues. They make their food in their leaves while every nutrient needs to be transported to the whole plant. The transport system associated with transport of food is called phloem tissues. Food is stored in the form of starch grains in chloroplasts found in mesophyll cells of leaves. This food is needed for fruit formation, apical growth, flower shoot, etc. This transport of food is called translocation. The transportation fluid rich in nutrients and other wastes is called phloem sap. The sap contains sugar,amino acids and minerals which are concentrated in the sap.
Phloem tissues include structures like sieve elements, companion cells, phloem parenchyma and phloem sclerenchyma (fibers).
Food is transported by phloem from a source to sink. Source is the part of the plant where food is synthesized and sink is the part of the plant that stores the food.source and sink can be reversed and hence movement of food in plants is bidirectional.

So, the correct answer is A.

Note:
The pressure hypothesis says mass flow of organic solutes takes place from sites of higher concentration to lower concentration. Thus, they are transported by osmosis.