Lichens are formed by fungi and algae (or cyanobacteria in some cases) that associate with each other forming a mutualistic symbiotic relationship. This association creates a physical connection between very different organisms in which both of them benefit from each other.
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The fungus is great at absorbing water and minerals from the environment. The alga is great at producing food from scratch by photosynthesis, but it needs water and minerals. So the fungus provides water and minerals for the alga, and the alga provides food for the fungus. Perfect partnership!
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In the first part of the video you can see the fungi and the algae within a little piece of lichen. In the second part of the video you can see the microscopic organization of a lichen cross-section from top to bottom:
Upper cortex: A dense layer of fungal hyphae that protects the lichen from drying out and damage in general.
Photobiont layer: This is where the algal cells live. This is where photosynthesis happens, producing food that is shared with the fungus.
Medulla: Network of fungal hyphae that makes up most of the lichen. This part of the lichen is very good at retaining water and dissolved minerals, which are shared with the algae.
Lower cortex: Another dense fungal layer that provides protection and helps attach the lichen to the surface it is growing on.
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For this video I used an Olympus BX41 microscope at up to 1000X magnification.
#lichens #microscopy #microscope
Lichens are a little more complicated than "good air = lichen, bad air = no lichen."
Some species are incredibly sensitive to air pollution, while others are much more tolerant.
That's why scientists often look at which species are growing, not just whether lichen is present.
It's a bit like fish. Finding a fish doesn't tell you whether a river is healthy but finding certain fish species can.
What's the strangest place you've seen lichen? 🌿
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#lichen #nature #terrarium #forest #mosslover
⚠️ One of the most repeated NCERT concepts in NEET!
Lichens survive in extreme conditions because two completely different organisms work together.
🧪 Fungus + Alga = Lichen
Sometimes, teamwork is nature’s greatest survival strategy. 🌍
📌 Save now. Revise later.
#NEET2027 #NEETBiology #Biology #NCERT #Lichen Symbiosis Mutualism NEETPreparation NEETAspirants BiologyReels ScienceReels LearnBiology NEETRevision NCERTBiology ExamPrep
“This ‘Organism’ Is Actually Two! 🌿 | The Secret Life of Lichens”
Description
What looks like a single organism is actually a fascinating partnership between two different organisms. 🔬🌿
A lichen is formed by a mycobiont (fungus) and a phycobiont (photosynthetic partner) living together.
The photosynthetic partner produces organic nutrients, while the fungal partner provides structure, protection and helps with water and mineral acquisition.
And here's the fascinating part: lichens can act as bioindicators of air pollution because many species are highly sensitive to atmospheric pollutants.
Tiny organisms. Incredible partnership. 🌿🔬
Follow Easy Science Guru for more fascinating biology explained simply.
#Lichens #Symbiosis #Mycobiont #Phycobiont #Botany PlantBiology Biology Ecology AirPollution Bioindicator ScienceReels BiologyFacts NatureScience EasyScienceGuru
🌿 Lichens in 10 Seconds | NCERT Biology
Lichens are a symbiotic association between Algae and Fungi.
✅ Alga → Makes food by photosynthesis
✅ Fungus → Provides water, minerals & shelter
✅ Lichens do not grow in polluted areas, so they are bioindicators of air pollution.
📚 Save this for your NEET revision and share it with a friend preparing for NEET!
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NEET Biology, NCERT Biology, Lichens, Symbiosis, Bioindicator, Air Pollution, Botany, Class 11 Biology, Biology Notes, NEET Revision
Our Lichens are actually high on Acid!
This is just one thing I learnt, although he didn’t use these terms, from Neil Sanderson who came to visit us recently @thousandyeartrust!
One of life’s great joys is to spend time with someone who is an absolute subject matter expert, the knowledge and energy is just infectious.
Amongst other things, I never really understood what a lichen really was. A fungi? An Algae? And as it turns out, is a bit of both.
As Neil put it, a lichen is an emergent state of being!
Are you lichen this?🤔
Lichens are so cool! So diverse both in color and shape. But still recognizable enough that you can usually tell that it is in fact a lichen.
Do you know which organisms combine to create lichens?
#nature #macro #lichens #lichen
🏔️ LICHENS इतने Important क्यों हैं? NEET में पूछा गया Fungi + Algae का ये Concept! 🌿🔥#NEET #NEET
How do we take care of lichens? Simona Margaritescu (Collections Specialist @simycology) and Eli Guan (University of Toronto Student) shares some lichen specimens they’ve recently catalogued. Learn more via our link in bio!
#mycology
REPUBLI | Découvrez comment la nature reprend ses droits dans nos villes et nos anciennes zones industrielles. Des mousses et lichens jusqu’aux arbres pionniers puis aux animaux, une experte de la “renaturation spontanée” nous explique, sur le fond, comment ça se passe.
#nature #wearenature #développementurbain #bruxelles #wallonie #biodiversité
This video is in real time 💧🌱🤯
The ground may look dead and dusty but just add water and it’s… bio-crusty!
Across arid Australia, hidden communities of cyanobacteria, algae, lichens, mosses and liverworts form biological soil crusts, or biocrusts. Built to withstand harsh droughts, they can spring back to life within seconds of rain.
Our ecologists dish the dirt on these soil specialists and share more incredible transformations via the link in our comments 👇
📹 M Mallen-Cooper / AWC
I’m liken these lichens! #lichens