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NCERT Solutions for Class 9 Science Chapter 6

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NCERT Solutions for Class 9 Science Chapter 6 - Tissues
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Chapter 6 in the Science book of class 9 is Tissues. Science is an important subject for class 9 and 10 as it forms the base for higher studies if any student wants to pursue a career in Science. The topic which we will cover now is tissues class 9, it holds much importance in the exams. Not only in the exams, but a higher and a bit complex version of this chapter is present in the higher classes if you want to pursue science as a subject. This class 9 science chapter 6 forms the basis of almost all types of topics related to human physiology. We will be able to solve NCERT Solutions class 9 science chapter 6 on our own after reading this chapter. The NCERT solution for class 9 science chapter 6 pdf is available on the website of Vedantu in the study material column. Maths Students who are looking for better solutions, they can download Class 9 Maths NCERT Solutions to help you to revise complete syllabus and score more marks in your examinations.

6. Tissues part-1
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FAQ (Frequently Asked Questions)

1. What are the Two Types of Vascular Bundles Present in Plants?

Answer: The two types of vascular bundles are:

  1. Open Vascular Bundles: In these types of vascular bundles, cambium tissue is present. It is present in between xylem and phloem elements. The bundles are said to be open. These types of bundles due to the presence of cambium, have the ability to form secondary xylem and phloem or in other words, they are capable of secondary growth. As they are open for secondary growth, therefore they are named open vascular bundles. They are present in dicots.

  2. Closed Vascular Bundle: The cambium tissue is absent in these types of vascular bundles. The xylem and phloem tissues are joined together and no cambium is present in them. No secondary growth is seen in these types of vascular bundles. Due to this, they are known as closed vascular bundles as they are closed for secondary growth.

2. What is Cork Cambium?

Answer: The cork cambium is the main tissue that is responsible for the formation of wood. The girth of the stem increases due to increased activity of the vascular cambium. As the girth keeps increasing the outer cortical layers starts rupturing. So, cork cambium produces new layers that replace the damaged or ruptured layers. Cork cambium is also called phellogen. The cork cambium has another name that is stellar cambium. Phellogen is thick and has two layers. The outer one forms the cork and the inner one forms the secondary cortex. The cells of cork are compactly arranged and in the beginning, they have thin cellulose cell walls. When they mature the living part is replaced by the non-living part which is the formation of wood material. The cell walls of the cork become thick by the deposition of suberin.