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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
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संबंधित प्रश्न
Where is apical meristem found?
What is the function of meristematic tissue?
Fill in the blank by selecting suitable words from the list given below:
Conducting tissue is also called .............. tissue.
What are meristematic tissues? Explain with the help of suitable diagram. Give their classification on the basis of their position in the plant body.
Write the name of the following tissue.
Tissue is responsible for increasing the height of plants.
Which one of the following pairs is correctly matched?
Name the kind of tissue found in the walls of the veins of the leaves.
List the tissues found in the human heart.
Parenchyma, collenchyma, Sclerenchyma are______ type of tissue.
State whether true or false. If false, correct the statement.
Vessels are found in collenchyma.
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.
Find out incorrect sentence
______ is derived from the ground meristem.
How would you differentiate meristematic and permanent tissue?
Vascular cambium is a ______.
Which one of the following cell types always divides by anticlinal cell division?
The lawn grass (Cynodon dactylon) needs to be mowed frequently to prevent its overgrowth. Which tissue is responsible for its rapid growth?
