Question

What would happen if green plants disappear from earth?

Answer 1

Answer:

Green plants are the sources of energy for all organisms. All other organisms directly or indirectly depend on them for food. So, if all the green plants disappear from the earth, all the herbivores will die due to starvation and so will the carnivore, i.e., it would result in extinction of life from the earth.

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Answer 2

(a) If all the green plants disappear from the earth, then all the organisms (herbivores, carnivores and omnivores) will die due to starvation as green plants are the source of food for all organisms.

(b) When photosynthesis occurs during the day, the carbon dioxide released by plants by respiration is all used up and not released. Similarly, some of the oxygen produced during photosynthesis is used up in respiration. Since the plant is releasing carbon dioxide and taking in oxygen even during the day, it means that no photosynthesis is taking place.