Assignments - Plant Tissues, Class 9, Science PDF Download

Fill in the blanks :-

1. ................... are forms of complex tissue.

2. ................... have guard cells.

3. Cells of cork contain a chemical called...................

4. Husk of coconut is made of ................... tissue.

5. ................... and ................... are both conducting tissues.

6. ................... gives flexibility in plants.

7. Xylem transports ................... and ................... from soil.

8. Phloem transports ................... from ................... to other parts of the plant.

9. ................... have tubular cells with perforated walls and are living in nature.

10. A thick waterproof coating of ................... occurs over the epidermis in desert plants.

Match the columns :-

1. Match the contents of the cloumns A and B (single matching)

2. Match the contents of the cloumns-I, II and III (Double matching)

True and false :-

1. Vacuoles are absent in meristematic plant cells.

2. Sclerenchyma has irregularly thickened cells.

3. Absorptive surface areas of roots are increased by the presence of root hair.

4. Cells of cork are dead, suberised and compactly arranged.

5. Aerenchyma is a modified parenchyma and occurs in aquatic plants.

6. Sieve tube cells are found in xylem, while vessels are found in phloem.

7. Apical meristem helps in longitudinal growth, while lateral meristem helps in secondary growth.

8. Collenchymal cells are deposited with lignin, while sclerenchymal cells are deposited with pectin.

9. Tracheids and vessels are collectively called tracheary elements.

10. Hush of coconut is made up of sclerenchyma tissue.

Very short answer questions :-

1. Give one example of (i) Apical meristem and (ii) Lateral meristem.

2. What is the main function of parenchyma ?

3. Which chemical is deposited at the corner of cells in collenchyma ?

4. Which chemical is deposited in the cell wall of sclerenchyma ?

5. Give one main function of collenchyma.

6. Name the complex tissue which helps in : (a) Conduction of water and minerals (b) Conduction of food.

7. What is the common name of : (a) Xylem (b) Phloem.

8. Name the cell which is attached to the lateral side of sieve tube.

9. Which type of simple tissue is used for making ropes ?

10. Give one example of protective tissue in the plant.

Short answer questions :-

1. Write a short note on intercalary meristem.

2. Write one main function of (a) Apical meristem (b) Lateral meristem

3. What are simple tissues ? Explain their three different types.

4. Draw a well labelled diagram of phloem.

5. Give two function of collenchyma.

6. Distinguish between xylem and phloem.

7. Explain the different types of elements present in phloem.

8. What are tracheary elements ? Describe their functions.

9. What are the function of xylem ?

10. What are different types of tissues in plant ?

Long answer questions :-

1. What are tissues ? Why are plant and animal tissues different ? Give importance of tissues.

2. What are meristematic tissues ? Explain with the help of suitable diagram. Give their classification on the basis of their position in the plant body.

3. Define simple tissue. Classify and explain its different types with suitable diagrams.

4. Define complex tissue. Classify and explain its different types with suitable diagrams.

5. Name and describe two protective tissues of plants. Give their other functions as well.