Question

Q.4 Lichen is an example of
Saprotrophs
Symbiosis
Parasites
None of the above
Justify your answer​

Answer 1

Answer:Hi friend ge

Symbiosis in lichens is the mutually helpful symbiotic relationship of green algae and/or blue-green algae (cyanobacteria) living among filaments of a fungus, forming lichen.

Living as a symbiont in a lichen appears to be a successful way for a fungus to derive essential nutrients, as about 20% of all fungal species have acquired this mode of life.[4] The autotrophic symbionts occurring in lichens are a wide variety of simple, photosynthetic organisms commonly and traditionally known as “algae”. These symbionts include both prokaryotic and eukaryotic organisms.

Explanation:

Answer 2

Answer:

Lichen is an example of symbiosis.

Explanation:

• A lichen is a durable symbiotic connection between a fungus and algae and/or cyanobacteria, not a single organism.
• Like all fungi, lichen fungi need carbon as a food source; this is given to them by the photosynthetic cyanobacteria and/or algae that live in symbiosis with them.
• Since both the fungus and their photosynthetic partners, known as photobionts, profit from the lichen symbiosis, it is believed to be a mutualistic relationship.
• Lichens are formed up of a fungus and one or more partners known as photobionts, two or more closely related organisms. An alga or cyanobacterium, both of which are capable of producing simple sugars through photosynthesis, could be the photobiont. In contrast, fungi are "heterotrophic," meaning they need an outside food supply to survive.
• The lichen thallus is built by the fungus, who also create the circumstances for a stable, long-term relationship with their photobionts, which is the basis of the lichen symbiosis.

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