Adult butterflies can only feed on … (41), usually nectar. Their mouth parts are modified to enable them to drink, but they cannot chew solids. A proboscis, which functions .. (42) a drinking straw, stays curled up under the butterfly’s chin until it finds a source of nectar or other liquid nutrition. It then opens the long, tubular structure and … (43) up the nectar.

                Adult butterflies can only feed on … (41), usually nectar. Their mouth parts are modified to enable them to drink, but they cannot chew solids. A proboscis, which functions .. (42) a drinking straw, stays curled up under the butterfly’s chin until it finds a source of nectar or other liquid nutrition. It then opens the long, tubular structure and … (43) up the nectar.