Factors which affect transpiration rate
sanaFollowing factors affect the rate of transpiration: (a) External factors Humidity of air Water is evaporated through the stomata. This follows the simple law of diffusion. 'Ibis diffusion can take…
Subjective Question Of Classification
sidraDiscuss different systems of classification. Describe artificial classification of Carolus Linnaeus. Describe classification system of .fussieu. Describe classification system of Bentham and Hooker. Discuss classification system of Wilhelm Eichler. Discuss…
CYTOPLASM ORGANELLES, AND CELLULAR COMPONENTS
abidaCYTOPLASM The cytoplasm of a cell has two distinct parts: The Cytomembrane system: It consists of well-defined structures, such as endoplasmic reticulum, Golgi apparatus. vacuoles, and vesicles. The fluid cytosol:…
Transpiration in Plants and its types
The evaporation of water from the aerial part of plant is called transpiration. Transpiration is not a purely ph) sical process like evaporation. It is a vital phenomenon. It plays…
Kingdoms of Life – Classification & Evolution
saadiaKingdoms of Life 1. Kingdom classification system In 1969. Robert II. Whittaker described a system of classification. This classification forms five kingdoms. The basis of classification of Whittaker is: (i) …
Molecular Approaches to Animal Systematics
Molecular Approaches to Animal Systematics Molecular approach includes study of molecules like protein, DNA, RNA of different species. Molecular techniques provide important information in recent years. These information are used…
Nomenclature
Nomenclature The assignment of a distinctive name to each species is called nomenclature. Common names have two problems: (a) First, common names vary from country to country. Even they vary…
Taxonomic Hierarchy
A Taxonomic Hierarchy There are two basis of taxonomic hierarchy: (a) Taxonomic hierarchy based on morphology Karl von Linne (Carolus Linnaeus) gave the modern classification system. It is still used…
CLASSIFICATION OF ORGANISM
CLASSIFICATION OF ORGANISM The study of kinds and diversity of organisms and the evolutionary relationships among them is called systematics or taxonomy. The study of systematics gives the order and…
Theories of acent of SAP in Plants
Here are following theories which explain the ascent of sap in plants: a) Root pressure (b) Capillarity (c) Vital theory and (d) Cohesion-tension theory. (a) ROOT PRESSURE The hydrostatic pressure…