i think water is lacking in aphid diet!!!because it is feeding on phloem which contains no water!!
The phloem was trying to confuse you..
how can aphids lack water in their diet?! They would die! Aphids like most living organisms need water to survive.
That question was trying to trick you out on purpose. You had to use the cross methods.
There is def sucrose and amino acids in the plhoem.
but aphids live on water...
soo its fat.. but it doesnt matter. One question- i thought the hardest. Just do well on paper 3 and ur fine..