Broom stem. Light micrograph (LM) of a transverse section through the stem of a common broom (Salicornia europaea) plant. Broom is a drought plant (xerophyte) with ribbed stems and branches to increase the area for photosynthesis. The ribs (spikes) contain spongy mesophyll, similar to a leaf, in the centre and ends of which are supporting bundles of fibres (sclerenchyma) The stem has undergone secondary thickening to produce a ring of xylem Above the xylem is the cambium and above this is the phloem In the centre of the stem is the pith made up of parenchyma cells. Magnification: x60 when printed 10 centimetres wide.
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Details
Creative#:
TPG32183132
Source:
達志影像
Authorization Type:
RF
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須由TPG 完整授權
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