The word “Ecology” was coined by a German biologist in 1869 . It is derived from the Greek word, “Oikos” meaning “House”. Ecology is the branch of science that deals with the study of interactions between living organisms and their … Read more
What is Environment and why do we now notice so much interest in Environmental Studies in recent years? The environment is the sum total of all conditions and influences that affect the development and life of all organisms on earth. … Read more
Common Plant diseases – Symptoms and signs Common names of diseases are always based on their key symptoms. These symptoms are described below in detail. Anthracnose: A characteristic lesion is circular to angular, sometimes irregular sunken spot with a grayish-black … Read more
Chloride: Chloride (Cl) anions are usually present in natural waters. A high Cl concentration occurs in waters that have been in contact with Cl-containing geological formations. Otherwise, high Cl content may indicate pollution by sewage or industrial wastes or by … Read more
Discovery: Ernst Haeckel first introduced the term plastid, and Andrews Schimper provided a clear definition of plastids in 1833. Plastids are double membrane-bound organelles inside plants and some algae, primarily responsible for making and storing food. Many plastids are photosynthetic, … Read more
The cell wall was discovered by Robert Hooke in 1665. Structure: It is the outermost boundary of the plant cells. Each cell, whether isolated or occurring in tissues, has its cell wall. The chemical composition of the cell walls is … Read more
