Angiosperm, to which the largest flowers belong, is (a) total root parasite (b) partial root parasite (c) total stem parasite (d) partial stem parasite.
Option A Rafflesia is a specialised total root parasite as the vegetative parts of its body are reduced and the whole body is within the host root and only structure which is visible outside, is the biggest flower. The diameter of the flower is one meter and its weight is about 10 kg. Its pollination is done by elephant. The flowers are fleshy white and they emit smell, which resembles the smell of decaying meat.