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RESPECT FOR WOMEN IS PARAMOUNTNetworking
Plant Morphology, also known as Phyto Morphology, is the study of external/physical structure/form of plants. It is the study of forms and features of different plant organs such as roots, leaves, flowers, seeds and fruits.
Plant Anatomy is the study of the structure of plants… looking at cells, tissues and organs.
Plant physiology is the study of the function of cells, tissues, organs of plants; and the physics/chemistry of these functions. It is the branch of biology concerned with the vital functions of plants such as nutrition, respiration, reproduction, etc.
The area of plant morphology overlaps with plant physiology and ecology.
atoms > molecules > cells > tissues > organs > whole plant
Plant Tissues Types
All plant organs (roots, stems, leaves) are composed of the same tissue types.
There are three types of tissue:
2. Vascular tissue
Xylem Cells
nucleus and
organelles
3. Ground Tissue
Plant Organs
Organs: tissues that act together to serve a specific function
Functions of plant organs
ROOTS: “the hidden half”
Functions of roots:
– Protects (from diseases)
– Absorbs water and nutrients
Root Hairs: water and mineral absorption
Root hairs increase surface area for better
absorption.
Meristematic activity, which increases the length of the root, occurs only at the tip. When the cells here divide, they produce the new root cells and root cap cells. The root cap cells are sloughed off as the root grows through the soil. The epidermal cells produce root hairs a short distance above the tip. Root hairs are part of epidermal cells.
Root Cortex
Root Ground Tissue
Root Cortex: Endodermis
Root cortex: Casparian strip
STEMS
Stem anatomy
Dermal, ground and vascular tissues
Types of Stems
Tissues of stems
–Conducts water
–Support
–Conducts food
–Support
Vasular Cambium
Girdling: cutting around a tree
Vascular tissue forms rings in trees
Ground tissue: Cortex & pith
Leaf Anatomy
Carbon dioxide + Water -> sugars + oxygen
Leaf Epidermis
Leaf Vascular Tissue
Spongy parenchyma (spherical cells with air spaces around, (for gas exchange)
Plant Water Transport
Transpiration-cohesion Theory for water transport in the xylem
Sugar translocation
Plant Hormones
3. CYTOKININS
4. ABISCINIC ACID
ASSIGNMENT : BASIC SCIENCE II: Plant Morphology and Physiology Assignment MARKS : 10 DURATION : 1 week, 3 days