What three problems had to be solved before plants could be well adapted to life on land ? What was the evolutionary solution to each of these problems?

Explanation:

Avoiding dehydration. Plants on land would have developed roots to acquire water from the soil. They also developed stomata ( by difinition: Stomata permit the absorption of carbon dioxide necessary for photosynthesis from the air, as well as the removal of excess oxygen) on the underside of their leaves to reduce water loss. Adaptation to arid environments involved waxy coats and fleshy leaves for water storage.*biology

the tricuspid valve is present between right atrium and right ventricle

cells spend most of their time in interphase