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प्रश्न
State the location and function of different types of meristems.
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उत्तर
Meristems are specialised regions of plant growth. The meristems mark the regions where active cell division and rapid division of cells take place. Meristems are of three types depending on their location.
Apical meristem
It is present at the root apex and the shoot apex. The shoot apical meristem is present at the tip of the shoots and its active division results in the elongation of the stem and formation of new leaves. The root apical meristem helps in root elongation.
Intercalary meristem
It is present between the masses of mature tissues present at the bases of the leaves of grasses. It helps in the regeneration of grasses after they have been grazed by herbivores. Since the intercalary meristem and the apical meristem appear early in a plant’s life, they constitute the primary meristem.
Lateral meristem
It appears in the mature tissues of roots and shoots. It is called the secondary meristem as it appears later in a plant’s life. It helps in adding secondary tissues to the plant body and in increasing the girth of plants. Examples include fascicular cambium, interfascicular cambium, and cork cambium
संबंधित प्रश्न
How is meristematic tissue different from permanent tissues?
Write a short note.
Meristematic tissue
Write the name of the following tissue.
Tissue is responsible for increasing the girth of the stem.
Write one word for the following:
Cells least specialized in plants.
Define the following:
Meristematic tissue
Name the tissues found:
at the tip of a growing stem
Write the information related to the diagram given below.
The tissue composed of living thin walled polyhedral cell is ______.
The fibres consists of ______.
Girth of stem increases due to
Survival of plants in terrestrial environment has been made possible by the presence of
Which structure protects the plant body against the invasion of parasites?
Define the process of differentiation
In apple, parenchyma stores ______.
Draw a shoot apex and label the meristem’s parts.
How would you differentiate meristematic and permanent tissue?
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.
