Structural-Organization-Morphology-Of-Plants-1
1. Root:
-
Roots are typically underground structures that anchor the plant and absorb water and minerals from the soil.
-
They may have various forms, including taproots (main root with lateral branches) or fibrous roots (thin, spreading roots).
-
Root hairs are tiny structures on the root’s surface that increase its surface area for absorption.
2. Stem:
-
Stems are typically above-ground structures that support leaves, flowers, and fruits.
-
They may be herbaceous (soft and green) or woody (hard and brown) depending on the plant type.
-
Stems often have nodes (points where leaves or branches attach) and internodes (the segments between nodes).
3. Leaf:
-
Leaves are the primary sites for photosynthesis, where plants capture light energy and convert it into energy-rich sugars.
-
Leaf morphology varies among species but often includes a flat, thin blade and a petiole that attaches it to the stem.
-
The upper surface of leaves is usually more exposed to light, while the lower surface may have stomata for gas exchange.
4. Phyllotaxy:
-
Phyllotaxy refers to the arrangement of leaves on a stem or branch.
-
Common phyllotaxy patterns include alternate (one leaf per node), opposite (two leaves per node, opposite each other), and whorled (three or more leaves per node in a circular arrangement).
-
Phyllotaxy patterns can help in species identification.
5. Inflorescence:
-
Inflorescence refers to the arrangement of flowers on a plant.
-
Different plant species have various types of inflorescences, such as racemes (unbranched, elongated clusters), panicles (branched clusters), umbels (umbrella-shaped clusters), and spikes (unbranched, closely spaced flowers).
-
Inflorescence types are important in botany and can aid in classifying plants.