The figure 1 will match to 'attracts pollinator' as it contains a beautiful flower which is colored and color, smell and nectar are used by flower to attract pollinator.
The figure 2 will match to 'prevents water loss'. Figure 2 contain fern, ferns belong to bryophytes.
The figure 3 will match to 'traps insects for nitrogen'. This figure is of insectivorous plant belong to Nepenthaceae family. This plant is carnivorous and depends on insects for nutrients.