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amphiphloic
A vascular bundle morphology in which the phloem occurs as concentric cylinders outside and inside the xylem.
ectotrophic mycorrhiza
A mycorrhiza in which the fungal component forms 2 sheath layers around the roots of a plant, the inner layer forming a sense mesh of hyphae, called the hartig net. The close association of the ...
endotrophic mycorrhiza
A type of mycorrhiza in which the fungal component penetrates the plant root, either pathogenically or beneficially. The fungal component does not change the root morphology. Compare ectotrophic ...
growth form
1 The morphology of an animal, especially as it reflects its physiological adaptation to the environment.2 Shape of population growth, as expressed by a growth curve (e.g. J-shaped, S-shaped).
ichnology
A subdiscipline of palaeontology or, more specifically, of palaeoecology, which is concerned with the study of ichnofossils and their value in the analysis of sedimentary sequences and the morphology ...
morphometrics
A technique of taxonomic analysis using measurements of the form (morphology) of organisms and typically involving multivariate statistics.
morphospecies
A group of biological organisms whose members differ from all other groups in some aspect of their form and structure (see morphology), but are so similar among themselves that they are lumped ...
plastid
An organelle within a plant cell, often occurring in large numbers. Apart from the nucleus, plastids are the largest solid inclusions in a plant cell. For convenience they are classified into those ...
protostele
One of 2 basic morphologies of steles, the other being siphonostele. Protosteles are the more primitive, being characterized by a single strand of xylem in the centre of the stem or root, and lacking ...
siphonostele
One of 2 basic morphologies of stele, the other being protostele. Siphonosteles are the more highly developed form, being characterized by a cylinder of xylem and phloem surrounding a pith. ...
tetrapodomorph
A fossil animal that is morphologically intermediate between fishes and tetrapods (Tetrapoda).
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