Xylem is one of the two types of vascular tissues in plants, the other being phloem. Each type of tissue serves different functions related to the transport of substances in plants.
Step 1: Role of Xylem.
The primary function of xylem is the conduction of water and minerals from the roots to the other parts of the plant, such as leaves and stems. This is achieved through a combination of capillary action, root pressure, and transpiration.
Step 2: Understanding the other options.
- (B) Translocation of food: This is the function of phloem, not xylem. Phloem is responsible for transporting the products of photosynthesis (food) from the leaves to other parts of the plant.
- (C) Translocation of amino acid: Amino acids are primarily transported by phloem, not xylem.
- (D) Translocation of oxygen: Oxygen is mainly involved in respiration within plant cells, but it is not specifically transported by xylem.
Step 3: Conclusion.
Thus, the function of xylem in plants is the conduction of water. The correct answer is (A).