AP and TS EAMCET Medical Model Paper 2

Indentify the correct pair of statements
I) The adaptive advantage of CAM pathway is the reduction of water loss by transpiration achieved by the stomatal opening during night
II) In CAM,C02 uptake and fixation take place at night and decarboxylation , refixation of the internally released CO2 and glucose synthesis occur during the day
III) CAM pathway is similar to C4 pathway in that CO2 is trapped by highly efficient PEP carboxylase which is activated by CU2+
IV) CAM pathway is an alternative to the C3and C4 pathways of CO2 fixation found in non-succulent plants like cacti growing in temperate climates.