Question

Предположим на Земле исчезли все живые организмы,кроме высших растений.Опишите дальнейшее развитие событий.(ПОМОГИТЕ!!! Биология 6 класс,СРОЧНО!!!!)

Answer 1

После исчезновения всех живых организмов на Земле, кроме высших
растений, вскоре вымрут и эти растения. Причины их вымирания могут быть
следующие:
· Для фотосинтеза необходим CO2, который выделяется при дыхании;
дыхание растений и вулканическая деятельность недостаточно, чтобы
скрыть расходы CO2 на фотосинтез;
· Растения не могут усваивать азот из атмосферы, этой способностью
обладают лишь прокариоты; после того как запасы достаточного
растениям азота в почвах будут исчерпаны, они погибнут;
· Многие растения не могут существовать без микоризы, то есть симбиоза с
грибами (орхидные, грушанковые, вересковые и др.).
Можно указать еще множество последствий такой глобальной катастрофы,
как «исчезновение биогеохимического круговорота веществ». Без этого
круговорота невозможно существование биосферы. Высшие растения
настолько специализированы, что не могут выполнять функции бактерий,
грибов и животных.

Answer 2

после того  как живые организмы кроме высших растений  исчезнут, природа возьмет в верх.растения же начнут  размножатся и распостранятся  по миру. потом возможно через несколько веков микробы начнут размножатся и снова мир начнет свою историю.

 

 

я тоже писала это на биологию поставили 5

 

Answer 3

The Future Development of Earth after the Disappearance of All Living Organisms except Higher Plants

If all living organisms on Earth, except for higher plants, were to disappear, it would have a significant impact on the planet's ecosystems and the overall balance of nature. Here is a detailed description of the potential future development of events:

1. Initial Impact: - The sudden disappearance of all living organisms, including animals, microorganisms, and lower plants, would cause a disruption in the food chain and ecological balance. - The absence of pollinators, such as bees and butterflies, would affect the reproduction of higher plants, leading to a decline in their population. - Decomposers, such as bacteria and fungi, would no longer be present to break down organic matter, resulting in the accumulation of dead plant material.

2. Changes in the Atmosphere: - Without animals and microorganisms, the carbon dioxide-oxygen balance in the atmosphere would be altered. - Higher plants would continue to perform photosynthesis, absorbing carbon dioxide and releasing oxygen, but the absence of animals would reduce the consumption of oxygen. - Over time, the oxygen levels in the atmosphere might increase, while carbon dioxide levels might decrease.

3. Impact on Soil and Nutrient Cycling: - The absence of decomposers would lead to a buildup of dead plant material, which would take longer to decompose. - Nutrient cycling would be affected, as decomposers play a crucial role in breaking down organic matter and releasing nutrients back into the soil. - The availability of nutrients for higher plants would decrease, potentially affecting their growth and survival.

4. Changes in Ecosystems: - Without animals, the dynamics of ecosystems would change significantly. - Predators and herbivores would no longer control the population of other organisms, leading to potential overgrowth of certain plant species. - The absence of animals would also impact seed dispersal, as many plants rely on animals to spread their seeds.

5. Potential Adaptations of Higher Plants: - Higher plants would face new challenges and opportunities in this scenario. - With no competition from other organisms, certain plant species might thrive and expand their populations. - Some plants might evolve new mechanisms for pollination, such as wind pollination, to compensate for the absence of animal pollinators. - Over time, higher plants might undergo genetic changes and adaptations to better survive in the new environment.

6. Long-Term Consequences: - The long-term consequences of such a scenario are difficult to predict accurately. - It is possible that the absence of animals and microorganisms would lead to a decline in biodiversity and the loss of many specialized ecological niches. - The overall functioning and resilience of ecosystems would be significantly compromised.

Please note that the above description is a hypothetical scenario and should be treated as such. The disappearance of all living organisms, except for higher plants, would have far-reaching and complex consequences that are challenging to fully predict or understand.