Question

What is a pit and what is the function of pit-pairs?

   What is a pit and what is the function of pit-pairs?

Plant Systematics

Plant Systematics

Michael G. Simpson 2nd Edition

Chapter 10, Problem 14

Instant Answer

Solved by Expert Emily Himsel

09/17/2021

Step 1

It is formed when two adjacent cells in the tissue do not fully develop their cell walls, leaving a gap or pit between them. The function of pit-pairs is to allow for communication and transport of substances between adjacent cells. Pit-pairs are usually found in Show more…

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What is a pit and what is the function of pit-pairs?

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Key Concepts

Pit-Pairs

Pit-pairs refer to the paired configuration of pits across the cell walls of adjoining plant cells. These aligned openings create a direct conduit for water and solute movement from one cell to another, particularly in the vascular system such as within the xylem. The paired arrangement helps regulate the flow, providing a balance between hydraulic efficiency and the prevention of issues like embolism formation by ensuring that the flow is controlled and localized.

Pit

In the context of plant cell biology, a pit is a localized region in the cell wall where the secondary wall is absent or significantly thinner. This modification creates an opening that allows for the passage of water and dissolved substances between adjacent cells, playing a crucial role in the conduction of fluids through plant tissues. This specialized structure is essential for the efficient transport of nutrients and water while maintaining structural integrity.

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