Plant Growth And Development Ppt !free! Download Top [ DIRECT - 2025 ]
Once the seedling has established itself, the plant enters the vegetative phase. During this period, energy is directed primarily toward the development of roots, stems, and leaves. The shoot apical meristem produces new leaves and stem tissue, while the root apical meristem expands the root system. Vegetative growth is largely driven by the plant hormone , which promotes cell elongation and maintains apical dominance (the suppression of lateral bud growth). A comprehensive PPT will include a labeled diagram of the shoot apex, showing the apical meristem, leaf primordia, and differentiating vascular tissues.
Promote cell division (cytokinesis) and delay leaf senescence.
Highlight how external stimuli shape plant form (photomorphogenesis):
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The most comprehensive PPT typically covers the following modules:
The transition from vegetative to reproductive growth is one of the most remarkable events in a plant’s life. This shift is triggered by a combination of internal signals (such as changes in hormone balance) and external cues, notably (the response to day length) and vernalization (the requirement for a period of cold temperatures). Some plants flower in response to long days (long‑day plants), while others require short days (short‑day plants). A good PPT will explain these concepts with real‑world examples, such as spinach (long‑day) and chrysanthemums (short‑day). Once the seedling has established itself, the plant
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The primary root emerges first to anchor the plant and absorb water.
Growth Rate ^ /--- Run-off/Stationary Phase | / | ____/ <-- Log/Exponential Phase | _/ | / <-- Lag Phase +---------------------------> Time Plant Growth Regulators (Phytohormones) Vegetative growth is largely driven by the plant
An irreversible increase in size, mass, or volume, driven by cell division (mitosis) in meristematic tissues and subsequent cell elongation.
A gaseous hormone that promotes fruit ripening and triple response in seedlings.