Question

Water and dissolved minerals get into the root hair of a plant by a process called A and enter the conducting tissue B. The process C helps the water and dissolved minerals to move up through tissue B in roots and stem, and reach the leaves of a plant. In the leaves, food is made by a process D. This food is then transported to all the parts of a plant through tissue E. The process of distributing food made in the leaves to all the parts of the plants is called F.
(a) What are (i) A (ii) B (iii) C (iv) D (v) E, and (vi) F?
(b) Which tissue is made up of living cells: B or E?
(c) Which tissue, B or E, contains sieve tubes?
(d) Which tissue, B or E, contains tracheids?

Answer 1

(a)
(i) The process by which water and dissolved minerals get into the root hair of a plant is known as diffusion. Hence, A is diffusion. 
(ii) The water and dissolved minerals are absorbed by the cells of the root hair, which enter the conducting tissue known as xylem. Hence, B is xylem.
(iii) Transpiration helps in transporting water and dissolved minerals to move up through the xylem tissue (B) in the roots and the stem, and reach the leaves of a plant. Hence, C is transpiration.
(iv) In leaves, the food is prepared by a process known as photosynthesis. Hence, process D is photosynthesis.
(v) The food synthesized by the leaves of a plant is transported to all the parts of a plant through tissue phloem (E). Hence, E is phloem.
(vi) The process of distributing (or transporting) food made in the leaves to all the parts of the plant is called translocation. Hence, F is translocation.  

(b) B represents the xylem, while E represents the phloem. Out of these, phloem (E) is made of living cells. 

(c) E (phloem) contains sieve tubes. 

(d) B (xylem) contains tracheids.V