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Mechanism of Transport in Plants: Uptake of Water and Minerals

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Questions and Answers

How is food transport demonstrated to occur through the phloem?

By removing the xylem ring and observing translocation of water
By measuring the metabolic activity of phloem cells
By observing the movement of ions against a concentration gradient
By conducting the girdling experiment and observing swelling in the upper part of the plant (correct)

What is the main role of the phloem in plants?

To conduct photosynthesis in the plant
To transport water from roots to leaves
To transport food from leaves to other parts of the plant (correct)
To store excess nutrients in the stem

Why does the accumulation of food materials cause swelling in the upper girdle in the girdling experiment?

Because of excessive ion concentration in the phloem
Because of increased metabolic activity of the phloem cells
Due to translocation of water from the roots
As a result of translocated sugars from the photosynthesizing leaf (correct)

Which vessels are most affected by the ringing or girdling experiment?

Phloem vessels (A) Signup and view all the answers

What is the role of aphids in relation to phloem sap?

To feed on phloem sap using their mouthparts (A) Signup and view all the answers

How does translocation differ from photosynthesis in plants?

Translocation involves movement of food, while photosynthesis involves production of food (D) Signup and view all the answers

What is the primary source of energy used by living phloem cells for active transport?

Energy obtained through metabolic processes (B) Signup and view all the answers

'Ring of bark removed Xylem -Water- tissue' is associated with which aspect in plant biology?

'Girdling' experiment for food transport demonstration (D) Signup and view all the answers

'Translocation in plants' primarily refers to:

'Shift or transport of food within a plant' (D) Signup and view all the answers

What would be observed after soaking a plant with removed bark (girdled) in a beaker of water for several days?

Swelling mainly in upper part due to accumulation of food materials like sugar (B) Signup and view all the answers

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