A proper transportation system becomes essential in plants mainly when:
Question
A proper transportation system becomes essential in plants mainly when:
The distances between soil-contacting and chlorophyll-containing organs become large
The plant is very small
The plant lacks chlorophyll
The plant grows only underground
Answer
The distances between soil-contacting and chlorophyll-containing organs become large
Detailed Explanation
When the distances between roots (soil-contacting) and leaves (chlorophyll-containing) organs increase, diffusion alone is insufficient, making a transport system essential.