DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: A stick of celery is left in a beaker containing a solution of blue food colouring. After two days, the celery is taken out and it is seen that parts of the celery have turned blue. What is the name given to the blue part of the plant?
(a) Phloem
(b) Leaf
(c) Stomata
(d) Xylem

Correct Answer: (d) Xylem

Explanation:

  Water and dissolved minerals are absorbed by the root hair of a plant by the conducting tissue Xylem, through a process known as diffusion. Therefore, the blue color will enter the celery and turn it blue.