Means of Transport in Plants

The video tutorial explains the transport of substances in plants, highlighting the differences from human circulatory systems. It covers short and long distance transport, including the roles of xylem and phloem. The video delves into simple diffusion, facilitated diffusion, and active transport, explaining the processes and factors affecting them. It emphasizes the importance of concentration gradients and the role of proteins in facilitated and active transport.

How do plants primarily transport water and minerals in one direction?

• Using active transport

• Through the phloem

• By cytoplasmic streaming

• Via the xylem tissue

Which process is responsible for the movement of substances from high to low concentration without energy?

• Active transport

• Facilitated diffusion

• Simple diffusion

• Symport

What factor does NOT affect the rate of diffusion in plants?

• Concentration gradient

• Membrane permeability

• Color of the substance

• Temperature

What role do transmembrane proteins play in facilitated diffusion?

• They provide energy for transport

• They create channels for hydrophilic substances

• They transport substances against the concentration gradient

• They dissolve lipid-soluble substances

In facilitated diffusion, what is it called when two molecules move in the same direction across a membrane?

• Uniport

• Antiport

• Symport

• Biport

What is required for active transport to occur?

• A concentration gradient

• Energy in the form of ATP

• Lipid bilayer permeability

• Passive diffusion

Which of the following is an example of a protein that assists in active transport?

• Symport protein

• Channel protein

• Sodium-potassium pump

• Porin