Question

Why do plants not have a heart?

Answer 1

Answer:

In humans, this is the circulatory system's job. But plants do not have a heart-like pump to move these vital energy sources. Instead, plants use a molecular pump. ... Thus, a critical piece of the molecular pump was unknown--the protein that moves the sucrose to the inside of the plant's leaf cell walls.

Answer 2

Answer:

Just as it's necessary for the human body to move nutrients to all of the organs, it is vital for green plants to transport sugars to supply its various parts. ... But plants do not have a heart-like pump to move these vital energy sources. Instead, plants use a molecular pump.