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Differentiate between: 

(i) Chlorosis and Necrosis, 

(ii) Mottling and Interveinal chlorosis, 

(iii) Haemoglobin and Leghaemoglobin.

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(i) Chlorosis and Necrosis

S. No. Chlorosis Necrosis
(i) The yellowing of leaves due to reduction of chlorophyll content in a green part is known as chlorosis. The death of a cell or a group of cells in a living plant is known as necrosis.
(ii) It is caused due to the deficiency of Magnesium, Sulphur, Iron, Manganese and Nitrogen. It is caused due to deficiency of Ca, Mg, Cu and K.

(ii) Mottling and Interveinal chlorosis

S.No. Mottling Interveinal chlorosis
(i) It is the patchy appearance of green and non-green areas of a leaf. The yellowing of leaf between the veins is called interveinal chlorosis
(ii) It is caused due to the deficiency of zinc and molybdenum It is caused due to the deficiency of iron and molybdenum.

(iii) Haemoglobin and Leghaemoglobin.

S.No. Haemoglobin Leghaemoglobin
(i) It is found in animals. It is found in root nodules of leguminous plants.
(ii) It is bright red in colour. It is reddish pink in colour.
(iii) It acts as an oxygen carrier. It acts as an oxygen scavenger.
(iv) It transports oxygen in the bodies of animals. It protects the enzyme nitrogenase.

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