Neco 2023 Biology Question 21

Three desert plant species exhibit different combinations of water‑saving adaptations. - Plant A possesses a thick waxy cuticle that reduces transpiration by \(40\%\) and a deep taproot that increases water uptake by \(20\%\). - Plant B has reduced leaf surface area decreasing water loss by \(30\%\) and performs CAM photosynthesis shifting stomatal opening to night, reducing water loss by \(25\%\). - Plant C exhibits all three adaptations (waxy cuticle, reduced leaf area, CAM) with the same percentage effects as above but no taproot. Assuming a baseline water loss of \(100\ \text{ml\ day}^{-1}\) for a plant without any adaptation, and that each percentage reduction applies to the water loss remaining after the previous adaptation has acted, which plant has the lowest net water loss per day?