class 9 chapter 6 science

For your convenience we have curated direct link to NCERT Book Class 9 Science so that you need not to keep search for it. (a) Name two tissues responsible for the movement of a body. Sieve tubes are tabular cells with perforated walls. 11. The tissue consist of thin-walled cells. With the help of the link provided below. Xylem: Conduct water in plants from root to shoot. Which cells are responsible for carrying message? Question 13. Important Questions For Class 9 Science Chapter 6 Tissues are provided here which can help the students to develop their problem-solving abilities & prepare for the exam more effectively. Cork cells are dead. (ii) Complex permanent tissues: The complex tissue consist of more than one type of cells having a common origin. Functions: (a) Cartilage provides support and flexibility to the body parts. Permanent tissue are classified into the following two types: (i) Simple permanent tissue (ii) Complex permanent tissue Simple permanent tissues: These tissues are composed of cells which are structurally and functionally similar. Question 3. Question 15. (e) Connective tissue with a fluid matrix. In desert plants, epidermis has a thick waxy coating of cutin which acts as a water proofing agent. Tissues present at the lateral surface of the stem are called apical tissues. (adsbygoogle = window.adsbygoogle || []).push({}); Presence of cuticle on the surface of desert plants reduce the rate of loss of water. Collenchyma are the chief mechanical tissue of the young parts of the plant. The covering or protective tissue in the animal body are epithelial tissues. Answer: The types of simple tissues are parenchyma, collenchyma, sclerenchyma and aerenchyma. Water hyacinth floats on water surface. The cells are variable in shape and size. (c) Cells do not posses intercellular spaces. What are the functions of stomata? Functions of smooth muscles: (i) Smooth muscles do not work according to our will so they are also called involuntary muscles. Name different types of meristematic tissue and draw diagram to show their location. These tissues cause the plant to become stiff and hard. Phloem is a complex permanent tissue. Answer: (1) Cardiac muscles cells are cylindrical, branched and uninucleated. The word tissue is derived from a French word of meaning ‘to weave’. Question 20. (d) Lining of kidney tubule—Cuboidal epithelium tisse The animal tissues are classified into nervous, muscular, connective, and epithelial tissues. (a) Blood: In this tissue, cells move in a fluid or liquid matrix or medium called blood plasma. (3) Tissue that trar-carts food in plants. (3) The cells are long, cylindrical with many nucleus and are unbranched. (2) They are involuntary muscles. These NCERT solutions are available in chapter wise and students can also find answers to all the questions available in their Class 9 Science NCERT textbooks. Adipose tissue: Adipose tissue stores fat, found below the skin and between internal organs. Answer: Sclerenchyma. The characteristic of cork are as follows: (a) Cells of cork are dead at maturity. Lymph: Lymph carries digested fat and lot of white blood cells in the plasma. For example muscles of limbs or skeletal muscles. (b) How does the cprk act as a protective tissue? Question 4. Answer: Muscle tissue and nervous tissue. (b) Parenchyma: (i) Cells are thin walled and unspecialised. 9. (a). (b) Intercellular spaces are absent in sclerenchymatous tissues. Xylem parenchyma—Stores food and helps in the sideways conduction of water. Complex permanent tissue. Differentiate between sclerenchyma and parenchyma tissues. (c) Bone—Connective tissue We cannot start or stop them from working by our desire. Smooth muscles This type of epithelium is thus ciliated columnar epithelium. The cells of this tissue are dead and their cell walls are thickened because of the presence of lignin. Answer: Three types of muscle tissues are: These tissues causes the plant to become stiff and hard. It smoothens the surface at joints. Complete the table: NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. (5) Connective tissue with a fluid matrix. Question 10. Plants are autotrophic organisms, so they prepare their own food by photosynthesis. NCERT Solutions Class 9 Science Chapter 6 . Intercellular space are generally absent. (4) Their rhythmic contraction and relaxation helps in pumping action of heart. The following are the differences based on cell wall between different tissues: 5. Question 13. What are responsible for contraction and relaxation in muscles? The plant tissues are classified into three types, namely vascular, epidermal, and ground tissues. (b) On focusing stomata pores under microscope. Answer: The outermost layer of the cell is called epidermis and is very porous. This is because since the root tips are cut, the roots won’t grow because of absence of meristematic tissue.

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