In this article we will discuss about the external and internal anatomy of earthworm. This will also help you to draw the structure and diagram of earthworm. External Anatomy of Earthworm: The body of Pheretima is nearly circular in cross-section and varies from 7 to 8 inches (18-19 cms) in length. The general colour of the body is brown but [...]
The following points highlight the three types of tissue systems in plants. The types are:- 1. Epidermal Tissue System 2. Ground Tissue System 3. Vascular Tissue System. Type # 1. Epidermal Tissue System: This tissue system consists of the outermost skin or epidermis of the plant organs. Epidermis is generally uniseriate or single- layered and protective in function. Many-layered epidermis, [...]
In this article we will discuss about the circulatory system of toad with the help of diagram. Circulatory or vascular system is the transport system by which materials such as food, oxygen and wastes are carried from one part of the body to other parts. The conveying medium is a liquid called blood. This is forced by a central pumping [...]