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The two cells shown below are obtained from two different potato cylinders which were immersed in tow different solutions P and Q.

      

The two cells shown below are obtained from two different potato cylinders which were immersed in tow different solutions P and Q.

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a)
i) Name the structure labelled A.

ii) State the function of structure B.

b) If eight of cell I were observed across the diameter of the filed of view of 0.5 mm. Work out the actual diameters of each cell in micrometers.

c) Suggest the identity of the solution Q.

d) Account for the change in cell I above.

e) State any one importance of the physiological process being demonstrated above in animals

  

Answers


Martin
(a) (i) Nucleus

(ii) Maintain the shape of he cell providing support to herbaceous plants; stores sugar
and salts; (mark first one)

(b) 0.5 x 100 ; 62.5µm;

8
(c) Hypotonic solution;

(d) The potato cell sap were lowly concentrated than the surrounding solution; hence lost water molecules by osmosis through the semi permeable membrane to become plasmolysed;

(e) Re-absorption of water from the kidney tubules/ hence important in osmoregulation
marto answered the question on October 3, 2019 at 10:50


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