Asked by selena andrade on Jun 13, 2024
Verified
The loading of dissolved sugars into the sieve tube elements of phloem is:
A) passive transport.
B) active transport.
C) osmosis.
D) simple diffusion.
E) facilitated diffusion.
Sieve Tube Elements
Specialized cells in the phloem of vascular plants that are responsible for transporting sugars and other metabolic products downwards from the leaves.
Active Transport
The movement of molecules across cell membranes against their concentration gradient, requiring energy typically in the form of ATP.
- Gain insight into the mechanisms, pathway, and energy consumption necessary for transpiration and translocation in plant systems.
Verified Answer
KL
Kelsie LeeannJun 14, 2024
Final Answer :
B
Explanation :
The loading of dissolved sugars into the sieve tube elements of phloem is an active process, requiring energy in the form of ATP to move sugars against their concentration gradient from the photosynthetic cells where they are produced into the phloem sieve tube elements.
Learning Objectives
- Gain insight into the mechanisms, pathway, and energy consumption necessary for transpiration and translocation in plant systems.
Related questions
Compare Transpiration and Translocation, and Be Sure to Cover the ...
The Transport of Sucrose from Companion Cells into Sieve Tube ...
The Predominant Photosynthetic Product Carried in Phloem Is _______ ...
Using Severed Aphid Mouthparts, Scientists Have Verified That, in Most ...
The Rate of Transpiration Decreases Under Which of the Following ...