Structural organisation in animals

The 7th chapter of the Biology class 11 syllabus, Structural Organisation in Animals, help us in understanding the formation of the structure in all complex animals. This topic familiarises students with the different types of functions that the animals are capable of performing. Thus, we have simplified the topic with examples that will make your understanding of the topic even better. So let us begin the tour of this topic. Credits: Shomu’s Biology Epithelial Tissue Epithelia are compactly packed cells that look like an intracellular matrix and provide a lining to different body parts. Epithelial tissues are classified into two types such as simple epithelium and compound epithelium. Let us take a detailed look at these Simple Epithelium Simple epithelium provides lining to cavities, ducts, and tubes in the body. The simple epithelium is made up of a single layer of cells. Structurally, the simple epithelium is further divided into the following: • Squamous Epithelium: Single thin layer of flattened cells lined with irregular boundaries makes for the Squamous epithelium. Their main function is to form a diffusion boundary. They are present in blood vessel walls and air sacs of the lungs • Cuboidal Epithelium: Single layer of cube-like looking cells make up the cuboidal epithelium. They are present in the ducts of glands and a tabular section of nephrons of the kidney. Their main function is absorption and secretion • Columnar Epithelium: Columnar epithelium have tall and...

Frogs Frogs are amphibians, they can live both on land and in A frog is a poikilotherm, which means that it is a cold-blooded animal. The body temperature is not constant and varies according to their surrounding The habitat of a frog is quite varied and can be found all over the world, except maybe, of course, the Antarctic region. They are not marine animals. They can be found only in freshwater habitat. A frog goes into summer sleep called aestivation and winter Morphology of a Frog The frog is a chordate, showing the characteristics of the It is dark green in color with irregular spots on the dorsal side, while in the ventral side; it is pale yellow in color. The head of a frog is triangular in shape with a blunt snout. The eyes of a frog have a nictitating membrane that gives protection when the frog is in water. On the sides of the eyes, a membranous tympanum (ear) is present that receives the sound signals. A frog has two forelimbs and two hind limbs. They help in walking, swimming, leaping as well as burrowing. Sexual dimorphism is seen in frogs, with the male species having vocal sacs and copulatory pad. These are absent in female frogs. Browse more Topics under Structural Organisation In Animals • Epithelial Tissue • Connective Tissue • Muscular Tissue • Neural Tissue • Organ and Organ System • Earthworm • Cockroach Body Anatomy of a Frog Inside the body cavity of a frog, there are many organ systems present such as the circulatory system, digestive system, respi...

S tructural O rganisation in A nimals In the preceding chapters you came across a large variety of organisms, both unicellular and multicellular, of the animal kingdom. In unicellular organisms, all functions like digestion, respiration and reproduction are performed by a single cell. In the complex body of multicellular animals the same basic functions are carried out by different groups of cells in a well organised manner. The body of a simple organism like Hydra is made of different types of cells and the number of cells in each type can be in thousands. The human body is composed of billions of cells to perform various functions. How do these cells in the body work together? In multicellular animals, a group of similar cells alongwith intercellular substances perform a specific function. Such an organisation is called tissue . 7.1 Animal Tissues 7.2 Organ and Organ System 7.3 Earthworm 7.4 Cockroach 7.5 Frogs You may be surprised to know that all complex animals consist of only four basic types of tissues. These tissues are organised in specific proportion and pattern to form an organ like stomach, lung, heart and kidney. When two or more organs perform a common function by their physical and/or chemical interaction, they together form organ system, e.g., digestive system, respiratory system, etc. Cells, tissues, organs and organ systems split up the work in a way that exhibits division of labour and contribute to the survival of the body as a whole. 7.1.1 Epithelial T...

NCERT Solutions for Class 11 Biology Chapter 7 Structural Organisation in Animals allows the students to explore the world of animals and their internal and external features. After going through our easy and simple solutions made by our subject expert teachers, students will confidently identify the subject better and will be able to perform well in this subject. Class 11 comes with new challenges that one is not prepared for. In other words, it poses quite a number of difficulties in understanding the material. You need to prepare yourself accordingly to become better at it. Our Structural Organisation in Animals NCERT Solutions for Class 11 Biology Chapter 7 will help with it and that too very efficiently. Structural Organisation in Animals class 11 NCERT teaches the students about the structural organization of animals. Subsequently, it discusses the different types of tissues present in various animals. After this chapter, students will better understand the animals' functioning and their bodily functions. In other words, it will enable them to comprehend the four types of tissues found in animals and their importance in an easy way. Therefore, our NCERT solutions will guide you effectively when learning about this chapter. (i) The common name of periplaneta americana is American cockroach. (ii) There are 4 pairs of spermathecae found in earthworm. (iii) The position of ovaries in cockroach is under the 4th to 6th abdominal terga. (iv) 10 segments in the abdomen of ad...

• Engineering and Architecture • Computer Application and IT • Pharmacy • Hospitality and Tourism • Competition • School • Study Abroad • Arts, Commerce & Sciences • Management and Business Administration • Learn • Online Courses and Certifications • Medicine and Allied Sciences • Law • Animation and Design • Media, Mass Communication and Journalism • Finance & Accounts To learn new habits is everything, for it is to reach the substance of life. Life is but a tissue of habits. -Henri Frederic Amiel Introduction to Structural Organization in Animals and Plants Structural organization in animals and plants is the second unit in the syllabus of NEET biology. It corresponds to the NCERT textbook of biology for class 11. This unit accounts for an approximate of 10% weightage in NEET exam and is equally important for other medical entrances.Structural organization in animals and plants provides with a detailed description of the morphology and anatomy of both plants and animals. These topics are dealt with under separate chapters to provide a holistic approach to the students. The topics covered under structural organization in animals and plants will be highly advantageousin the upcoming topics of plant physiology and animal physiology. A considerable number of questions are asked from the chapter structural organization in animals. Hence, it is a crucial unit not only due to its weightage but also in developing the understanding of upcoming chapters. After reading the various ...

This article covers the concepts of the chapter Structural Organisation in Animals as per the NEET 2022 syllabus for biology. This article will help out the students who are preparing for The following document contains all of the important topics and provides an insight into the exam pattern. By studying this article, one can find out all the answers to the important questions related to the chapter, such as what are animal tissues, definitions and explanation of epithelial tissues, connective tissues, what are muscle tissue and neural tissue, organ and organ systems of organisms, anatomy and morphology of earthworm, anatomy and morphology of cockroach, anatomy and morphology of frog, etc. Important Topics of Structural Organisation in Animals • Animal tissues • Organ and organ system • Earthworm - morphology and anatomy • Cockroach - Morphology and anatomy • Frogs - Morphology and anatomy Important Concepts Animal Tissues (I) Epithelial Tissue: They are densely packed cells with little intercellular matrix and one surface of this tissue is exposed to air or internal fluid. 1) Simple Epithelium: a) Squamous Epithelium b) Cuboidal Epithelium c) Columnar Epithelium d) Ciliated Epithelium e) Glandular Epithelium 2) Compound Epithelium Junctions They are specialised structures that connect individual cells structurally and functionally. They are classified as tight, adhering, and gap junctions. 1. Tight Junctions: These are the specialised structures that prevent substances f...

Flashcards For NEET Biology - Structural Organisation in Animals Flashcards for NEET Biology are designed to boost your NEET preparation. Find below flashcards for Structural Organisation in Animals. These flashcards on Structural Organisation in Animals are prepared as per the NEET syllabus. This is helpful for aspirants of NEET and other exams during last-minute revision. Flashcards For NEET Biology – Structural Organisation in Animals, covers all the important points that are frequently asked in the exam. Check BYJU’S for the full set of Flashcards and Study material for NEET Biology. Solve Name of the NEET sub-section Topic Flashcards helpful for Biology Structural Organisation in Animals NEET exams Structural Organisation in Animals Simple squamous epithelium Function- Diffusion, filtration, osmosis Found in- Walls of blood and lymph vessels and air sacs of lungs Simple cuboidal epithelium Function- Secretion and absorption Found in- Tubules in the nephrons and glandular ducts, surface of ovaries Simple columnar epithelium Function- Secretion, protection and absorption Found in- Uterus, stomach and intestinal lining Ciliated epithelium Columnar or cuboidal cells having cilia Function- Directional movement of mucus or particles Found in- Inner surface of bronchioles and fallopian tubes Unicellular glandular epithelium Goblet cells Multicellular glandular epithelium Salivary glands Compound epithelium Function- Protection against mechanical and chemical stress Found i...