• The amount of water consumed (transpired) per gram of $\text{CO}_2$ fixed is the Transpiration Ratio (TR), which is the reciprocal of transpiration efficiency.
• Based on photosynthetic mechanism and stomatal behavior:
• CAM plants (e.g., Pineapple): Have the lowest water consumption per gram of $\text{CO}_2$ fixed (TR $\approx 50 - 100\text{ g } \text{H}_2\text{O} / \text{g } \text{CO}_2$) due to nocturnal stomatal opening.
• $C_4$ plants (e.g., Maize): Have intermediate water consumption (TR $\approx 250 - 350\text{ g } \text{H}_2\text{O} / \text{g } \text{CO}_2$) due to internal $\text{CO}_2$ concentration mechanism.
• $C_3$ plants (e.g., Rice): Have the highest water consumption (TR $\approx 500 - 900\text{ g } \text{H}_2\text{O} / \text{g } \text{CO}_2$) due to high photorespiration and daytime stomatal transpiration.
• Therefore, the sequence in (C) Pineapple (CAM) < Maize ($C_4$) < Rice ($C_3$) is strictly correct in ascending order.
• Hence, the correct answer is (C) only (Option 3).

Crop growth analysis parameters:

• Leaf Area Duration (LAD, expressed in days) integrates both the magnitude of the photosynthetic canopy cover and its temporal persistence over a developmental period, representing the extent of canopy cover maintenance.
• As officially keyed by NTA (Option 3), LAD reflects canopy cover persistence at that stage.
• Leaf Area Index (LAI) is the instantaneous ratio of total upper leaf surface area per unit ground land area.

Growth analysis and yield physiology metrics:

• Harvest Index (HI), introduced by Donald (1962), is the ratio of economic yield (grain yield) to total biological yield, expressed as a percentage: $\text{HI} = (\text{Economic Yield} / \text{Biological Yield}) \times 100$.
• Relative Growth Rate (RGR) measures the increase in dry biomass per unit biomass per unit time ($g\,g^{-1}\,day^{-1}$).
• Crop Growth Rate (CGR) measures the gain in biomass per unit land area per unit time ($g\,m^{-2}\,day^{-1}$).
• Net Assimilation Rate (NAR) represents the net photosynthetic rate or dry weight increase per unit leaf area per unit time ($g\,m^{-2}\,day^{-1}$).

Water relations and gas exchange ratios:

• Transpiration Ratio (TR) is defined as the moles of water transpired divided by the moles of $\text{CO}_2$ assimilated ($TR = \text{Moles of } \text{H}_2\text{O transpired} / \text{Moles of } \text{CO}_2\text{ fixed}$).
• Water Use Efficiency (WUE) is the exact inverse of transpiration ratio ($\text{WUE} = \text{CO}_2\text{ assimilated} / \text{H}_2\text{O transpired}$ or $\text{Dry matter produced} / \text{Water used}$).
• Hence, water transpired divided by $\text{CO}_2$ assimilated is the Transpiration Ratio.