«MEGAPHYLL» தொடர்புடைய ஆங்கிலம் புத்தகங்கள்
பின்வரும் புத்தக விவரத்தொகுப்புத் தேர்ந்தெடுப்பில்
megaphyll இன் பயன்பாட்டைக் கண்டறியுங்கள்.
megaphyll தொடர்பான புத்தகங்கள் மற்றும் ஆங்கிலம் இலக்கியத்தில் அதன் பயன்பாட்டுச் சூழலை வழங்குவதற்கு அதிலிருந்து பெறப்பட்ட சுருக்கமான சாரங்களைத் தொடர்புபடுத்துகின்றன.
1
Paleobotany: The Biology and Evolution of Fossil Plants
We introduce the evolution of the megaphyll here, however, because a number of
fossil ferns exhibit various stages in the evolution of this leaf type. Megaphylls
have complex venation (unless secondarily reduced) and a leaf gap occurs in the
...
Edith L. Taylor, Thomas N. Taylor, Michael Krings, 2009
2
The Evolution of Plant Physiology
The earliest vascular land plants consisted of dichotomizing, leafless, cylindrical (
terete) axes, but megaphyll evolution soon gave rise to determinate, non-
laminate but presumably photosynthetic, lateral branch systems in their
successors ...
Alan R. Hemsley, Imogen Poole, 2004
3
Botany: An Introduction to Plant Biology
Megaphyll. Line. of. Evolution: Euphyllophytes. □. trimerophytes Division
Trimerophytophyta was proposed in 1968 for three genera of extinct plants,
Trimerophyton, Psilophyton, and Pertica. Their fossils strongly resemble those of
...
4
Terrestrial Photosynthesis in a Changing Environment: A ...
Class—[H HD—ZIP genes control the initiation of lateral appendages, the
differentiation of the top from the bottom of the leaf and the development of
vasculature. Moreover, these genes are present in both microphyll and
megaphyll species, ...
Jaume Flexas, Francesco Loreto, Hipólito Medrano, 2012
5
The Evolution of Plants
The former branches would thus provide vascular tissue into the megaphyll leaf,
resulting in the evolution of a broad leaf containing many vascular strands (
Figure 4.9b). Three stages were thought to have occurred in the evolution of the ...
Kathy Willis, Jennifer McElwain, 2013
6
An Introduction to Pteridophyta: Diversity, Development, ...
Quite early (Lignier, 1903) the megaphyll was suggested to be of stem nature
and this concept formed the basis of Telome Theory (Zimmermann, 1930).
Accordingly, an early vascular plant such as Rhynia consisted of dichotomous
axes the ...
7
Leaf Development and Canopy Growth
The Telome theory attempts to explain the origin of the megaphyll, the leaf-type
traditionally assigned to the fern and seed plant species. In contrast, the Enation
theory was advanced by Bower (1935) to explain the origin of the microphyll (the
...
Bruce Marshall, Jeremy A. Roberts, 2000
8
Plant Biomechanics: An Engineering Approach to Plant Form ...
Megaphyll. One of two types of leaves produced by vascular plants. Traditionally
characterized as being large, possessing a much-branched vascular trace, and
having a vascular connection with the stem that results in a leaf gap (a relatively ...
9
Annual Plant Reviews, The Evolution of Plant Form
Studies of KNOX, ARP, and HD-ZIP expression patterns have been used to
provide evidence for various hypotheses on microphyll and megaphyll origins
and megaphyll homology (Harrison et al. 2005; Floyd & Bowman 2006). The
leaves of ...
Barbara A. Ambrose, Michael D. Purugganan, 2012
10
Evolution on Planet Earth: Impact of the Physical Environment
The conventional view of this evolution of the 'megaphyll leaf' is that progressive
modification of a repeatedly forking photosynthetic axis produced a lateral system
, which was overtopped by the growth of what was destined to become 'the ...
Lynn Rothschild, Adrian Lister, 2003
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