sieve plate

sieve plate
noun or sieve disk
: a wall or portion of a wall between sieve-tube elements containing one or more sieve areas — compare compound sieve plate, sieve tube

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sieve plate noun (botany)
A perforated area by which a sieve tube connects with another
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Main Entry:sieve

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sieve plate,
Botany. one of the thin walls of a sieve cell.

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n. Botany an area of relatively large pores present in the common end walls of sieve tube elements
Zoology a perforated plate in the integument of an invertebrate, esp. the madreporite of an echinoderm

Useful english dictionary. 2012.

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Look at other dictionaries:

  • sieve plate — Perforated end walls separating the component cells (sieve elements) that make up the phloem sieve tubes in vascular plants. The perforations permit the flow of water and dissolved organic solutes along the tube, and are lined with callose. The… …   Dictionary of molecular biology

  • sieve plate — Perforated wall area in a sieve tube element, through which strands connecting sieve tube protoplasts can pass …   Glossary of Biotechnology

  • sieve plate — noun Date: 1875 a perforated wall or part of a wall at the end of one of the individual cells making up a sieve tube …   New Collegiate Dictionary

  • sieve plate — 1. (ECHINODERMATA) see madreporite. 2. (PORIFERA) A plate like porous structure below the osculum …   Dictionary of invertebrate zoology

  • sieve plate — (Class Ostracoda): Minute, perforated plate covering pore in valve; may be associated with seta [Stachowitsch, 1992] …   Crustacea glossary

  • sieve-plate — …   Useful english dictionary

  • compound sieve plate — noun botany : a sieve plate having the sieve areas in groups separated by a network or bar of cell wall material …   Useful english dictionary

  • sieve tube — noun tube formed by cells joined end to end through which nutrients flow in flowering plants and brown algae • Hypernyms: ↑vascular tissue • Part Holonyms: ↑phloem, ↑bast * * * noun : a tube consisting of an end to end series of thin walled… …   Useful english dictionary

  • sieve cell — noun : an elongated tapering cell characteristic of the phloem of gymnosperms and lower vascular plants that is basically similar in form, function, and relationships to a sieve tube element but distinguished by rather uniformly distinguished… …   Useful english dictionary

  • sieve pit — noun : one of the fine perforations that occur in a sieve plate …   Useful english dictionary

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