Structural Organisation in Animals Class 11 Notes

In a unicellular organism, the single cell performs all the functions like respiration, digestion, etc. In multi-cellular organisms, different groups of cells work together in an organized manner to carry out the basic functions of the body. The​ ​structural organization in ​animals is the same at the basic level, that is:

Cell→Tissue→Organ→Organ System

​​Organs of all animals at the higher level consist of one or more types of tissues, for example, the human heart consists of all four basic types of tissue that are epithelial, connective, muscular, and neural. The complexity of organs and organ systems follows a particular pattern. This pattern is known as the evolutionary trend.

NCERT Notes of Class 11 Biology Chapter 7 Structural Organisation in Animals

Notes on NCERT for Class 11 Biology Chapter 7 Structural Organisation in Animals: Structural organization in animals refers to the arrangement of cells, tissues, organs, and organ systems that work together through the division of labour and ensure the survival of the whole body. In this article, you will find the structural organisation in animals class 11 notes for self-study. Also, NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals are available.

Here, we will study the morphology and anatomy of frogs. Morphology is the study of the external form and appearance of different parts of the body. Anatomy refers to the study of the morphology of internal organs of the body.

Table of Content

  • Structural Organisation in Animals Class 11 Notes
  • Organ and Organ System
  • Frogs
  • Morphology of Frog
  • Anatomy of Frog
  • FAQs on Structural Organisation in Animals

Similar Reads

Structural Organisation in Animals Class 11 Notes

In a unicellular organism, the single cell performs all the functions like respiration, digestion, etc. In multi-cellular organisms, different groups of cells work together in an organized manner to carry out the basic functions of the body. The​ ​structural organization in ​animals is the same at the basic level, that is:...

Organ and Organ System

Cell forms the basic functional and structural unit of all animals. A group of cells, together with intercellular substances carrying a specific function, are called tissues. Tissues are organized together in a definite pattern to form an Organ – for example, Heart, Kidney, Stomach, etc. ​When two or more organs interact physically and chemically to perform a common function, they constitute Organ System. Examples are the Respiratory system, cardiovascular system, etc. Such an organization is necessary to ensure that millions of cells in an organism work together in an efficient and coordinated manner....

Frogs

Frogs can live on both land and in freshwater. They belong to the class Amphibia of phylum Chordata. The Indian bullfrog, ​​Rana tigrina, is ​the most common frog found in India. Frogs are cold-blooded animals, as their body temperature varies with the temperature of the environment. Frogs use a protective coloration technique known as mimicry​ in order to camouflage​. To protect themselves from extreme heat in summer and extreme cold in winter, frogs undergo summer sleep (aestivation) and winter sleep (hibernation), respectively....

Morphology of Frog

The morphology of frogs is given below:...

Anatomy of Frog

The body cavity of the frog consists of different organ systems like the respiratory, digestive, excretory, circulatory system, etc., that are well developed in structure and function....

FAQs on Structural Organisation in Animals

​Define Epithelia....