article Needle Anatomy – Suggestions for Observation and Comparison
Olga Ševčíková
information
year: 2024
issue: 1
fulltext: PDF
online publishing date: 29/5/2024
DOI: 10.14712/25337556.2024.1.2
ISSN (Online): 2533-7556
Toto dílo podléhá licenci Creative Commons Uveďte původ 4.0 Mezinárodní License.
abstract
Most woody plants belonging to the order Pinales have needles. Their anatomy has adapted to external conditions – mainly the deficit of water during winter. In cross section, the needles are different in shape, but the leaf anatomy of coniferous species is quite similar. However, there are inter-species differences in arrangement of hypodermis, in the type of mesophyll, in the number and arrangement of resin ducts, and in the number of vascular bundles. Needles are a suitable material for Biology lectures. Their advantage is their availability every season of the year. This paper offers some options for the obser-vation of needle anatomy, recognition of species differences, and the use of an anatomical identification key.
keywords
needle, anatomy, microscope observation, Biology lectures
fulltext (PDF )
References
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