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_____ tissue is the only plant tissue that produces new cells by cell division.
1. Parenchyma
2. Xylem
3. Collenchyma
4. Meristematic

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Correct Answer - Option 4 : Meristematic

The correct answer is Meristematic.

  • Growth in plants occurs as the stems and roots lengthen. This is called primary growth.

  • Many plants, especially woody plants, also increase in thickness during their life span. This is called secondary growth.
  • Plants continue to grow as long as they live. They grow through a combination of cell growth and cell division (mitosis).
  • Cell division takes place in specialized tissue called meristematic tissue.
    • The cells of the tissue are undifferentiated and continue to divide and differentiate.
  • Meristem allows plant stems and roots to grow longer (primary growth) and wider (secondary growth).
  • Primary growth is caused by the growth of epical meristem and secondary growth is caused by lateral meristem.

  • Parenchyma tissue is involved in photosynthesis, secretion, food storage, and other activities of plant life.
  • Collenchyma tissue provides support, structure, mechanical strength, and flexibility to the petiole, leaf veins, and stem of young plants, allowing for easy bending without breakage.
  • Xylem is planted vascular tissue. It transports water and dissolved minerals from the roots to the rest of the plant and also provides physical support.

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