Question

two types of haustorial roots

Answer 1

In botany and mycology, a haustorium (plural haustoria) is a structure that grows into or around another structure to absorb water or nutrients. In botany, this may refer to a cotyledon,[1] or to the root of a parasitic plant (such as the broomrape family or mistletoe) that penetrates the host's tissue and draws nutrients from it. In mycology, it refers to the appendage or portion of a parasitic fungus (the hyphal tip), which performs a similar function. Microscopic haustoria penetrate the host plant's cell wall and siphon nutrients from the space between the cell wall and plasma membrane but do not penetrate the membrane itself.[2] Larger (usually botanical, not fungal) haustoria do this at the tissue level.

Answer 2

1 is silk root
2 is ???