Plant Biology
Transport in plants involves two key systems: xylem, which moves water and minerals from roots to leaves, and phloem, which distributes organic compounds from sources to sinks. Plant growth is regulated by hormones and occurs in meristems, with responses to light and gravity affecting growth direction. Plant reproduction includes the structure and function of flowers, the processes of pollination and fertilization, and influences like photoperiodism on flowering.
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What we have learnt
- The xylem transports water and minerals through mechanisms such as transpiration and root pressure.
- Phloem is responsible for transporting organic compounds through processes like phloem loading and pressure flow.
- Plant hormones regulate growth, including auxins for elongation and gibberellins for flowering.
Key Concepts
- -- Xylem
- Vascular tissue responsible for water and mineral transport in plants.
- -- Phloem
- Vascular tissue that transports organic compounds like sucrose from sources to sinks.
- -- Meristem
- Regions of undifferentiated cells in plants that are capable of continuous growth.
- -- Phototropism
- Growth response of plants to light, facilitating optimal light absorption.
- -- Photoperiodism
- The response of plants to the lengths of light and dark periods, influencing flowering.
Additional Learning Materials
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