Question

what are pits in plants ?

Answer 1

Bordered pits are cavities in the lignified cell walls of xylem conduits (vessels and tracheids) that are essential components in the water-transport system of higher plants. The pit membrane, which lies in the center of each pit, allows water to pass between xylem conduits but limits the spread of embolism and vascular pathogens in the xylem. Averaged across a wide range of species, pits account for > 50% of total xylem hydraulic resistance, indicating that they are an important factor in the overall hydraulic efficiency of plants. The structure of pits varies dramatically across species, with large differences evident in the porosity and thickness of pit membranes. Because greater porosity reduces hydraulic resistance but increases vulnerability to embolism, differences in pit structure are expected to correlate with trade-offs between efficiency and safety of water transport. However, trade-offs in hydraulic function are influenced both by pit-level differences in structure (e.g. average porosity of pit membranes) and by tissue-level changes in conduit allometry (average length, diameter) and the total surface area of pit membranes that connects vessels. In this review we address the impact of variation in pit structure on water transport in plants from the level of individual pits to the whole plant.

Answer 2

Answer:

The pits are a liquid or we can say fluid type material which is present in plant cell !!

Explanation:

The pits are transferred the water and minerals in plant boby .... generally we can say.....

it work as the fluids....

"pits are small apertures in xylem and ploem elements...

simple pits are small apertures any border.......but bordered pits are specialist pits,in which the pit aperture is guarded by a thin outer covering.........".... generally in polem.....

so,I hope this will we help u more..... thanku...for asking.....love u all