Tag: topranked
-

Introduction to Parasitology (Related Terminology)
Parasitology Parasitology is the study of parasites and their relationship with their host. Parasitism Parasitism is a type of symbiotic relationship between two heterospecific organisms in which one organism called the parasite is metabolically dependent on the other called the host. The parasite benefits at the expense of the host and is also usually smaller…
-

Major Ecosystems of the World
Overview Types of Ecosystem Artificial categorization of ecosystem can be done as following of the giant ecosystem – the Ecosphere. A) Natural Ecosystems: Self- operated under natural conditions. Natural ecosystems can be further classified as… Terrestrial- for example: Forest, Grassland, Desert, Natural Geysers etc. Aquatic- Further classified as freshwater & marine… Freshwater- Lotic (Running water):…
-

Ecology: Definition, Subdivision & Scope of Ecology
The word ecology is derived from Greek language… So for an idea of Ecology, it can be said that it is study of the environmental house including all the organisms living in it & all the functional processes occurring inside it. That means we can say that ecology is basically concerned with study of relationship…
-

Ecosystem Structure
On the basis of trophic structure, ecosystem is two layered: “trophe = nourishment” Autotrophic Stratum (Green Belt): Upper, self-nourishing layer of chlorophyll-containing plants. Fix the light energy, convert inorganic substances into complex organic compounds which predominate in the stratum. The most intensive autotrophic metabolism occurs in this layer where light energy is available. Heterotrophic Stratum…
-

Osteichthyes (Bony Fishes) Classification
For Sub class 3: Branchiopterygii, check image above “Osteichthyes Overview”. Vertebrata Classification Agnatha Classification Chondrichthyes (Cartilagenous Fishes) Classification
-

Integumentary System (Skin and its derivatives)
Introduction The common structural pattern of both aquatic & terrestrial vertebrates of integument is… Epidermis Derived from Ectoderm Stratified i.e. consists of multi-layers of cells Dermis Derived mainly from mesoderm Formed of connective tissue Contain blood & lymph vessels, nerve & smooth muscle fibres, receptors and also special irregular pigment cells (chromatophores) Below dermis, subcutaneous…
