Question

What is the name of the special hyphal tips through which parasitic fungi absorb nutrients directly from the cytoplasm of the living host?
A. Haustoria
B. Mildew
C. Constricting ring
D. All of the above​

Answer 1

Hint:
A haustorium may be a nutrient-absorbing consequence of a fungus or parasitic plant that permeates the tissues of the host organism. Haustorium is a highly modified stem or root of a parasite or a specialized branch or tube originating from a hair-like filament (hypha) of a fungus. The haustorium penetrates the tissues of a number and absorbs nutrients and water. In parasitic plants, like dodder and mistletoe, the haustoria form a vascular union with the host plant to redirect the host’s nutrients.

Complete answer:
The word haustorium is also used to indicate certain cell types in plant embryology. The African Mustelidae family of freshwater mussels have a parasitic larval stage that's called a haustorium. Parasitic plants differ from plants like climbing vines, lianas, epiphytes, and aerophytes; though the latter are supported by other plants, they're not parasitic, because they use other plants simply as a structure on which to grow instead of as a direct source of water or nutrients. Another group of plants that are sometimes confused with parasites is mycoheterotrophy.
So, the correct answer is Haustoria.

Option ‘A’ is correct

Note:
In order to survive and reproduce, parasitic plants must be ready to recognize the presence of a neighboring plant and have mechanisms to ensure that their seeds encounter appropriate hosts. The seeds of generalist parasites (those with a good range of potential hosts) typically germinate under environmental conditions that are favorable to nonparasitic. Once the parasite seeds have developed into seedlings, they then must locate a number.