At which times there is no net gaseous exchange between leaves and the atmosphere.

A. Day time.
B. Night time.

C. Dawn & dusk.

D. Mid night.
At which times there is no net gaseous exchange between leaves and the atmosphere. | Dawn & dusk. | CSS, PMS, PPSC, FPSC, KPPSC, SPSC, ISSB and NTS Past Papers | Pakistan's Largest Online Past Papers Database

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