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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
Fill in the blank
......................... tissue is situated at the tip of root and stem.
Write one main function of
(a) Apical meristem
(b) Lateral meristem
What are meristematic tissues? Explain with the help of suitable diagram. Give their classification on the basis of their position in the plant body.
Where is the least specialized tissue located in plants?
Name one place in living organisms where the following tissue is located:
Meristematic tissue
The fibres consists of ______.
What are intercalary meristems? How do they differ from other meristems?
Find out incorrect sentence
Girth of stem increases due to
Meristematic tissues in plants are
Cartilage is not found in
Nervous tissue is not found in
Cork cambium is an example of ______ meristem.
In apple, parenchyma stores ______.
Draw a shoot apex and label the meristem’s parts.
How would you differentiate meristematic and permanent tissue?
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.
Which one of the following cell types always divides by anticlinal cell division?
