Observe transverse, tangential, and radial sections of a Pinus stem on demonstration. Identify the xylary rays in each section. Why is lateral conduction necessary?
Observe transverse, tangential, and radial sections of a Pinus stem on demonstration. Identify the xylary rays in each section. Why is lateral conduction necessary?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Observe transverse, tangential, and radial sections of a Pinus stem on demonstration. Identify the xylary rays in each section. Why is lateral conduction necessary?

Transcribed Image Text:Pith
Resin
canal
Resin
canal
Uniseriate
medullary ray
Resin
canal
Primary
xylem
Resin
canal
Phloem
Phloem
Biseriate
medullary.ray
Bordered pit
Secondary Secretory
xylem
cells
Medullar
ray
Walls of
fibre-tracheids
Medullary
Vascular
cambium
Parenchymatous
\cortex
Xylem
Fibre-tracheids
transverse section of pinus stem
tangential section of pinus stem
radial section of pinus stem
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