Explain in brief , Morphological Evidence.
Answers
Explanation:
Morphological data are features of external form or appearance. Provide nearly all the characters used for plant identification. Also useful in phylogenetic studies and other systematic studies. MORPHOLOGICAL DATA HAS ALWAYS, AND STILL IS, THE PREDOMINANT TYPE OF DATA USED IN PLANT SYSTEMATIC STUDIES.
Morphological Evidence
Data is used to:
Detect and explain patterns of variation
Define the limits of a species
Determine evolutionary relationships
Identify plant species
Provide a classification in agreement with evolutionary relationships
Types of data:
Morphological
Pollination
Reproductive biology
Anatomy
Chromosomes
Palynology
Chemistry
Molecular
Morphological Data
Morphological data are features of external form or appearance.
Provide nearly all the characters used for plant identification
Also useful in phylogenetic studies and other systematic studies
MORPHOLOGICAL DATA HAS ALWAYS, AND STILL IS, THE PREDOMINANT TYPE OF DATA USED IN PLANT SYSTEMATIC STUDIES.
Morphological data sources:
Field samples
Herbarium samples
Qualitative characters
Quantitative characters
Data from vegetative and reproductive parts of the plants.
Types of vegetative morphological characters:
Duration and habit
Root types/parts
Stem types/parts
Leaf types/parts
Floral morphology
Floral morphology is often used to characterize biological species because it has direct effects on reproductive isolation.
Types of floral morphological characters:
Merosity and presence or absence of parts
Shapes of parts
Symmetry of flowers
Insertion
Placentation
Micromorphological data
Features of a plant that are only seen with compound light microscopes or electron microscopes e.g. epidermal cell shapes, seed coat morphology, pollen exine sculpturing
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