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प्रश्न
What are tracheary elements? Describe their functions.
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उत्तर
Tracheary elements are the elongated cells of xylem tissue. They are of two types:
(i) Vessels: These are long tube-like structures that are formed by a row of cells placed end to end. The transverse walls between the vessel elements are completely dissolved forming water pipes.
(ii) Tracheids: These are elongated cells with tapering ends. Since their end walls have closed ends, water has to pass from cell to cell via pits.
Both these elements are involved in the conduction of water.
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संबंधित प्रश्न
Identify the type of tissue in the bark of tree.
Draw a well-labelled diagram of phloem.
Write the functions of parenchyma, collencyma and sclerenchyma.
Differentiate between cells of Sclerenchyma and Parenchyma
Differentiate between:
Parenchyma and collenchyma
Give the structure and function of the following:
Collenchyma
Give the structure and function of the following:
Phloem
The question has four answers. Choose the correct answer:
Hard lignified thick walled, long and pointed cells in a plant are
Name the two types of sclerenchyma cells.
Match the followings and choose the correct option from below
| Column I | Column II |
| A. Meristem | i. Photosynthesis, storage |
| B. Parenchyma | ii. Mechanical support |
| C. Collenchyma | iii. Actively dividing cells |
| D. Sclerenchyma | iv. Stomata |
| E. Epidermal tissue | v. Sclereids |
