Class 11 · Plant Growth and Development

Photoperiodism & Simultaneous Flowering — NEET Biology

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'Both a short day plant and a long day plant can produce can flower simultaneously in a given place'. Explain.

NCERT Biology · Class 11 · Chapter 13 · Paragraph 60
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Match the following developmental processes with their key event/change and a relevant example/context: COLUMN I (Process) A. Growth B. Differentiation C. Dedifferentiation D. Redifferentiation E. Senescence COLUMN II (Key Event/Change) 1. Cells regain capacity to divide 2. Irreversible increase in size 3. Cell specialization and structural changes 4. Ageing, decline, and eventual death 5. Products lose capacity to divide but mature to specific functions COLUMN III (Example/Context) X. Formation of secondary xylem from vascular cambium Y. Elongation of a root at a constant rate Z. Formation of interfascicular cambium from parenchyma W. Formation of tracheary elements losing protoplasm V. Final stage of plant life cycle Options:

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