Q5 of 71 Page 161

Give one word for

(i) zig-zag thickenings in cardiac muscles.


(ii) Thickening present in sclerenchyme cell.

(i) Intercalated discs- They form the zig zag thickening in cardiac muscles.

(ii) Lignin, since the thickening in sckerenchyma is due to lignin.


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