Answer:
Genotype
Explanation:
Genotype describes the genes of a creature while phenotype describes the creatures physical appearances or qualities.
To be frank starch is made up of long chains of glucose. While cell walls are made from cellulose created from photosynthesis. Cellulose is made up of glucose and cell walls are the most abundant carbohydrate.
The tropical rainforest is the biome that tends to get the most rainfall.