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Meristematic tissues in plants are those...

Meristematic tissues in plants are those

A

Which have their walls made of cellulose

B

Which have intercellular spaces between them

C

Which store reserve food materials

D

Which have their cell walls made up of chitin

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Definition of Meristematic Tissue**: Meristematic tissues are specialized plant tissues that consist of undifferentiated cells capable of division and differentiation into various specialized cell types. 2. **Characteristics of Meristematic Tissue**: - **Undifferentiated Cells**: The cells in meristematic tissue are not specialized and can develop into different types of cells. - **Self-Renewal**: When these cells divide, one cell remains a meristematic cell (parent cell) while the other differentiates into a specialized cell. - **Living Cells**: Meristematic tissues are composed of living cells, which are essential for growth and repair. - **Thin Cell Walls**: The cell walls of meristematic cells are thin and primarily made of cellulose. - **Dense Protoplasm**: The cytoplasm of these cells is dense, indicating high metabolic activity. - **Single Large Nucleus**: Meristematic cells typically contain a prominent, single nucleus. - **No Intercellular Spaces**: These cells are closely packed with no spaces between them. - **High Metabolic Activity**: They have a high rate of metabolism due to their active role in growth. - **Young and Immature**: The cells are immature, which contributes to their ability to divide rapidly. 3. **Evaluating Options**: - **Option 1**: "Which have their walls made of cellulose" - This is correct as the cell walls of meristematic tissues are indeed made of cellulose. - **Option 2**: "They have intercellular spaces" - This is incorrect; meristematic tissues do not have intercellular spaces. - **Option 3**: "They store reserve food material" - This is also incorrect; meristematic tissues do not store food. - **Option 4**: "Cell wall is made up of chitin" - This is incorrect; the cell wall is made of cellulose, not chitin. 4. **Conclusion**: The correct answer is **Option 1**, which states that meristematic tissues have their walls made of cellulose. ---
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