simple pit

simple pit

[′sim·pəl ′pit]
(botany)
A pit that lacks a border.
References in periodicals archive ?
Hyphae can grow through the torus and through simple pit pairs of parenchyma cells.
Many instances were observed of hyphal growth directly through the aperture and pit membrane of simple pit pairs from one parenchyma cell to another (Figure 11).
The most common responses were simple pit (22% regional median) and open pit (16% regional median).
In a similar way, simple pits on imperforate tracheary elements (= libriform fibers) have developed in some clades (Salvadoraceae, Tovariaceae, Borthwickiaceae, Resedaceae, Capparaceae, Cleomaceae, Brassicaceae); angiosperms have the genetic information to form fibers with simple pits (e.
For example, Koeberliniaceae, Pentadiplandraceae, and Stixaceae have tracheids, whereas fiber-tracheids with nearly simple pits appear basic to Brassicales.
The work involved Longer pits,Development of simple pits in triple pitsMicropiles achievement for metal frame and poles,Creating a metal frame,Roofing access gateway,Blanket,Cladding,Lighting,Connecting Networks,Reshuffle catenary gantries.
All legume woods have simple perforation plates, alternate intervessel pitting, vessel-ray pits similar to intervessel pits in size and shape, fibres with simple pits, vestured pits (with some exceptions) and in general axial parenchyma with mostly 2-4 cells per strand.
These and all the others up to about 10 miles wide are simple pits, sometimes with a tiny flat floor.
Chiribaya burial chambers include simple pits, cylindrical stone-lined cists, several variants of partially or fully stone-lined rectangular tombs, and occasional tombs with low circular or rectangular walls on the surface above them.