Tissues Class 9 Notes CBSE Science Chapter 6 (Free PDF Download)

1. Plants can not move from one place to another i.e. show locomotion to meet their requirements. Therefore they are provided with some tissues which are made up of dead cells, which helps in providing mechanical strength. They have the ability to withstand unfavourable conditions like strong winds, storms, floods, etc.

2. Animals on the other hand can move from one to another in search of food, mates, or shelter. They have to consume more energy in comparison to plants. Most of the tissues present in them are living. Cell growth seen in animals is very uniform. The structural organisation of organs and organ systems is quite specialized and localized in animals in comparison to complex plants.

3. Plant Tissues:

i. Meristematic Tissue:

The growth in plants occurs at very specific regions. This is due to the presence of dividing tissue commonly known as meristematic tissue. On the basis of the region where they are present, meristematic tissues are further classified as apical, lateral, and intercalary.

a. Apical meristem is the meristem present at the apical or growing area mainly the tips of stems and roots. Apical meristem is responsible for the increase in the length of the plant.

b. Lateral meristem is generally found in the radial portion of the stem or root. Lateral meristem is responsible for the increase in the girth of the plant.

c. Intercalary meristem appears at the base of the leaves or at the internodes. Intercalary meristem causes an increase in the length of the internode.

ii. Permanent Tissue:

The older meristematic cells tend to lose the capacity to divide and turn to permanent tissues. This process of attaining a permanent shape, size, and function is known as differentiation.

These cells have lost their capacity to divide but now perform a specified function to provide strength, flexibility and elasticity to the plant. These tissues are divided into simple permanent, complex permanent and special tissues.

4. Simple permanent tissues are divided into the parenchyma, collenchyma and sclerenchyma and these are divided on the basis of their function.

i. Parenchyma: Parenchyma are living cells and are loosely packed. It plays a role in supporting the plant and stores food. In some cases it may contain chlorophyll also and perform photosynthesis and then it is known to be chlorenchyma. Parenchyma when contains large air cavities like in aquatic plants, then it is known as aerenchyma. The aerenchyma helps in providing buoyancy in aquatic plants.

ii. Collenchyma: Collenchyma are elongated living cells with very small intercellular spaces. Their cell walls consist of cellulose and pectin. Collenchyma mainly occurs in the peripheral regions of stems and leaves in order to provide mechanical support and flexibility to plants.

iii. Sclerenchyma: These are long, dead cells with deposition of lignin in their cell wall and have no intercellular spaces. Sclerenchyma is found in the vascular tissues in stems, in veins of leaves, and in the hard covering of seeds and nuts. They are responsible for providing strength to the plant.

Tissues: Class 9 Science Chapter 6 Revision Notes Summary

Now that you have vividly studied cells, you will proceed to the tissue part in Chapter 6 Class 9 Science syllabus. Here, you will learn what kind of tissues are present in the plant and animals. This chapter will also describe precisely the differences between the plant and animal tissues.

Once you start referring to Chapter 6 Tissues Class 9 notes, you will discover how the experts have done a great job in consolidating the entire chapter into proper segments. These notes can be used as a reference to prepare the chapter faster before an exam. Studying this chapter will make you more confident in answering the questions in the exercise and exams. Let us take a quick peep into the revision note summary.

The Class 9 Chapter 6 Science notes will begin by describing the meaning of tissues and how they are formed. It is just a group of similar or different cells combining to serve a particular purpose or function. Tissues are broadly divided into two types, plant tissues and animal tissues.

The plant tissues are then segregated as per their features and functions. The revision notes will clearly distinguish between the different plant tissues. Here, you will find a proper description of meristematic tissues, permanent tissues and their differences. The Ch 6 Science Class 9 notes are prepared in such a way that students can easily identify the tissues and write about their features to answer the questions in an exam. The easy description of these tissues will surely aid you in understanding the complex concepts and eradicate all your doubts on the go. You will not have to wait for the class to finish the chapter when you have these revision notes with you to refer to.  

On proceeding further, you will discover the definition and description of the different tissues in the plant body as per their features and functions. It will describe simple and complex permanent tissues and their specific functions. The illustration of Tissue Chapter Class 9th notes will develop a proper foundation of knowledge. This foundation will be used in the higher classes to add more knowledge and learn deeply about different kinds of plant tissues.

The Class 9 Science Chapter 6 Tissues notes will then proceed to the description of animal tissues, their features and functions. You will find a proper explanation of different epithelial tissues and their examples. Proceed to the muscular tissue and find an apt explanation of the different kinds of tissues. Every section of the Science Ch 6 Class 9 notes will have the right examples to follow and to remember the features. The next section will describe the different kinds of connective tissues. In notes of Ch 6 Science Class 9, you will find the description of blood, bones, ligaments, tendons, cartilages, adipose and areolar tissues.

The Class 9 Science Notes Chapter 6 will then take you to the definition and description of the nervous tissue. You will find neurons described and explained with diagrams properly using simpler language. The functions of the nervous tissues will be explained along with the description of the nervous system.

Why Prefer Using Vedantu’s Revision Notes for Class 9 Science Chapter 6?

The notes of Class 9 Science Chapter 6 prepared by the experts of Vedantu properly address the sections which most students find confusing or difficult. The simpler explanation using images and examples will help you clarify your queries and prepare the chapter easily. Using Class 9 Ch 6 Science notes will also help you revise the chapter quickly and get ready for an exam faster.

Tissues Class 9 CBSE Notes, with the help of these notes, the students can use this as a study material to give an overview of the Chapter. These notes primarily serve as the revision material which the students can resort to before the examination. 

You can also download the pdf which is freely available and is at your access anytime and anywhere. 

Conclusion 

The availability of free PDF download notes for CBSE Class 9 Science Chapter 6 - "Tissues" is a valuable asset for students. These notes provide a structured and comprehensive overview of the fascinating world of biological tissues. They simplify complex concepts, making it easier for students to understand the different types of tissues, their functions, and their significance in organisms. These downloadable notes not only support academic success but also nurture a deeper appreciation for the intricate structures and functions of tissues in plants and animals. Overall, they serve as an indispensable resource that enhances students' learning experience and paves the way for a better understanding of the biological world.