MCQ on Phloem Transport in Plants




MCQ on Phloem Transport in Plants: Phloem transport in plants occurs through a process called translocation. Sugars, mainly sucrose, produced in photosynthetic source tissues are actively loaded into the phloem. This creates a pressure gradient, causing sugars to flow through sieve tubes to sink tissues, where they are utilized or stored.

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1. 
Phloem is a specialized tissue in plants responsible for:

2. 
The main organic compound transported through the phloem is:

3. 
The movement of organic compounds through the phloem is known as:

4. 
What is the main driving force behind phloem transport?

5. 
The movement of phloem sap occurs from regions of ________ to regions of ________ concentration.

6. 
In phloem transport, loading of sucrose and other organic compounds into the phloem occurs in the:

7. 
Which of the following actively transports sucrose from source cells to the phloem sieve tubes?

8. 
The process of unloading phloem sap at sink tissues involves the conversion of sucrose back into glucose and fructose by:

9. 
Sink tissues in the context of phloem transport refer to areas where organic compounds are:

10. 
The pressure flow hypothesis explains phloem transport as a result of:

11. 
Phloem sap moves bidirectionally in plants. The upward movement of phloem sap is known as:

12. 
Which of the following plant structures provides a physical connection between the source and sink tissues for phloem transport?

13. 
Phloem transport is vital for long-distance transport of organic compounds, especially in:

14. 
In the process of phloem loading, sucrose is actively transported from source cells into the companion cells, which creates a higher concentration of sucrose in the phloem sieve tubes. What type of transport is involved in this process?

15. 
The rate of phloem transport can be influenced by various factors, including:



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