Question

Почему лишайники могут жить в суровых условиях??? помогите пожалуйста!!! :-)

Answer 1

Лишайники - это симбиоз гриба и водоросли. Поэтому лишайник получают в двойне больше питательных веществ, чем получали бы водоросли и грибы отдельно.

Answer 2

Why can lichens survive in harsh conditions?

Lichens are unique organisms that consist of a symbiotic relationship between fungi and algae or cyanobacteria. This partnership allows lichens to thrive in a wide range of environments, including harsh conditions. Here are some reasons why lichens can survive in such conditions:

1. Tolerance to extreme temperatures: Lichens have the ability to tolerate both high and low temperatures. Some lichens can survive in extremely cold environments, such as the Arctic and Antarctic regions, while others can withstand high temperatures in deserts and volcanic areas.

2. Adaptation to low nutrient availability: Lichens have adapted to survive in environments with limited nutrient availability. The fungi in lichens can extract nutrients from the surrounding environment, including from rocks and air, making them capable of surviving in nutrient-poor habitats.

3. Resistance to desiccation: Lichens can withstand periods of drought and desiccation. Their unique structure, with the algae or cyanobacteria protected within the fungal tissue, allows them to retain moisture and survive in dry conditions.

4. Tolerance to high radiation levels: Some lichens are known to tolerate high levels of radiation, including ultraviolet (UV) radiation. This ability is attributed to the protective pigments produced by the algae or cyanobacteria within the lichen structure.

5. Resistance to pollution: Lichens are often used as bioindicators of air quality because they are sensitive to pollution. However, some lichens have developed mechanisms to tolerate and even thrive in polluted environments, making them resilient to human-induced pollution.

In summary, lichens have evolved various adaptations that allow them to survive in harsh conditions, including extreme temperatures, low nutrient availability, desiccation, high radiation levels, and pollution. Their unique symbiotic relationship between fungi and algae or cyanobacteria enables them to thrive in environments where other organisms may struggle to survive.

I hope this information helps! Let me know if you have any further questions.