Q. 965.0( 2 Votes )

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 the 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 plant 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 :

(a) (i) Diffusion (A) (ii) Xylem (B) (iii)Transpiration (C)

(iv) Photosynthesis (D)

(v) Phloem (E)

(vi) Translocation (F)

(b) E (c) E (d) B

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PREVIOUSThe transport system in plants consists of two kinds of tissues X and Y. The tissue X is made up of living cells and consists of two components A and B. The component A has tiny pores in its end walls and contains only cytoplasm but no nucleus. On the other hand, component B has cytoplasm as well as nucleus. The tissue Y is made up of dead cells and consists of two components C and D. The component C has open ends whereas component D does not have open ends. In flowering plants, either only C or both C and D transport water but D is the only water conducting tissue in non-flowering plants.(a) What is (i) tissue X (ii) component A, and (iii) component B ?(b) What is (i) tissue Y (ii) component C, and (iii) component D ?NEXTThe liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body.(a) What is (i) tissue A (ii) pigment B, and (iii) colour C ?(b) Name (i) D (ii) E (iii) F, and (iv) G.(c) Name one substance (other than oxygen) which is transported by tissue A in the human body.(d) Which two components of tissue A are the cells without nucleus ?(e) Name any two organisms (animals) which do not have liquid like A in their body.
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