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प्रश्न
Which structure protects the plant body against the invasion of parasites?
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उत्तर
Epidermis is a layer of parenchymatous cells that forms the outermost covering of the plant body. Epidermis consists of compactly arranged cells without any intercellular spaces. On the aerial plant parts, it secretes a thick, waxy, water-resistant layer called cuticle on its outer surface. These features .make the epidermis protective against loss of water, mechanical injury, and the invasion of parasites.
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संबंधित प्रश्न
Where is apical meristem found?
State the location and function of different types of meristems.
Answer in detail.
Which tissue is responsible for the increase in the height of a plant? Where is it locate?
Name the kind of tissue found in the walls of the veins of the leaves.
The tissue composed of living thin walled polyhedral cell is ______.
Refer to the given figure and select the correct statement.
- A, B, and C are histogen of shoot apex
- A Gives rise to medullary rays.
- B Gives rise to cortex
- C Gives rise to epidermis.
Read the following sentences and identify the correctly matched sentences.
- In exarch condition, the protoxylem lies outside of metaxylem.
- In endarch condition, the protoxylem lie towords the centre.
- In centarch condition, metaxylem lies in the middle of the protoxylem.
- In mesarch condition, protoxylem lies in the middle of the metaxylem.
The meristem found at the base of internodes is called ______.
Bamboo, grass and mint stem elongate by the activity of
Match List - I with List - II.
| List - I | List - II | ||
| (a) | Cells with active cell division capacity |
(i) | Vascular tissues |
| (b) | Tissue having all cells similar in structure and function |
(ii) | Meristematic tissue |
| (c) | Tissue having different types of cells |
(iii) | Sclereids |
| (d) | Dead cells with highly thickened walls and narrow lumen |
(iv) | Simple tissue |
Select the correct answer from the options given below.
