For all the questions given in CBSE Class 9 Science NCERT book we have collated detailed and accurate answers that will help students learn the right technique to write perfect answers in the annual exams to get optimum marks.
In this article we are providing the NCERT solutions for Class 9 Science chapter 6, Tissues. Our subject experts have reviewed these NCERT solutions to provide you the error free content which will make it easy for you to make an effective preparation for the annual exams.
All the class 9 Science NCERT solutions have been collated as PDF format which students may easily download free of cost.
Main topics discussed in Class 9 Science chapter- Tissues are:
- Plant tissues
- Meristematic tissue
- Permanent tissue
- Animal tissues
- Epithelial tissue
- Connective tissue
- Muscular tissue
- Nervous tissue.
Some of the questions and their solutions from NCERT Solutions for Class 9: Tissues, are as follows:
Q. What is a tissue?
Sol.
Group of cells that are similar in structure and are organized together to achieve a particular function is called tissue.
Q. What is the utility of tissues in multicellular organisms?
Sol.
In multicellular organisms, the body system is based on the division of labour (like muscle cells form muscular tissue which helps in movement). It means the cells performing a specific function are grouped together to form a particular tissue. The different tissues are organized in a way to provide the highest efficiency in the functioning of the body.
Q. Where is apical meristem found?
Sol.
The growing tips of stems and roots of plants are the main are where apical meristem is present. It helps in increasing the length of the stem and the root.
Q. What are the constituents of phloem?
Sol.
The constituents of phloem tissue are:
1. Sieve tubes (tubular living cells with perforated end walls)
2. Companion cell (living cells)
3. Phloem parenchyma (living cells)
4. Phloem fibres (non-living and sclerenchyma cells)
Q. What are the functions of areolar tissue?
Sol.
Functions of areolar tissue:
1. It fills the space inside the organs, thus acts as a packing tissue between the organs.
2. It supports many delicate organs in the body.
3. It plays role in repair of tissues.
Q. How many types of elements together make up the xylem tissue? Name them.
Sol.
The following four types of elements make up xylem tissue:
1. Xylem tracheids.
2. Xylem vessels.
3. Xylem parenchyma.
4. Xylem fibres.
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