Question

Select the correct statements.
(i) Between temperature range $0-{25}^o$C, rate of the respiration doubles for every ${10}^o$C rise in temperature.
(ii) Cytochromes are iron-porphyin compounds.
(ii) Respiratory rate of wounded or injures plant parts generally decreases.

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i) and (iii)
• D. (i),(ii) and (iii)

Answer 1

Answer: (A)

(i) and (ii)

Wounding or injuring an organ of a plant increases the rate of respiration. It is probably due to the formation of growth hormone, traumatic acid, which increases the meristematic activity, resulting in callus formation.