Concept:Nutrition is a process by which an organism consumes and uses food materials. There are various modes of nutrition mainly, Autotrophic, Heterotrophic, Chemoautotrophic, Saprophytic, etc.Parasitism is a type of heterotrophic nutrition.Explanation:Cuscuta:Cuscuta is a parasitic plant.Since Cuscuta does not have chlorophyll, it cannot synthesize its own food by photosynthesis.It takes readymade food from the plant on which it is climbing.The plant on which it climbs is called a host.Since it deprives the host of valuable nutrients, it is called a parasite.It is yellow and tubular in structure twining around the stem and branches of a tree.Other parasitic plants are - Rafflesia, Viscum, Nuytsia floribunda.Parasitic plants cause damage to the host plant.Thus, the correct answer is Cuscuta.Additional InformationHolophytic or autotrophic nutrition: In this type of nutrition the organisms prepare their food by themselves. Eg - green plants.Saprobiotic nutrition: In this type of nutrition the organism depends on the dead and decaying matter of other organisms. Eg - fungi