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6. plant water relation

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🌿 PLANT WATER RELATION Recall...🤔🤔 1.Which are the various parts of plant body? 2. What are the functions of various parts of plant body? 3. Which plant tissues are involved in transport of water and minerals? Plants obtain a variety of substances from their surroundings: Water, Minerals, Nutrients, Gases such as O₂ and CO₂ 🤔Why is water so important? Water is considered the “Elixir of Life”. The productivity of plants is greatly affected  by the availability of water. If sufficient water  is not available, several essential processes  of the plant are affected mainly photosynthesis. Water constitutes approximately 90–95% of most plant cells and tissues. It helps cells to: maintain their turgidity maintain their shape carry out various biochemical activities   How does water move from the soil → roots → stem → leaves, even against gravity? PROPERTIES OF WATER 1. It is in the liquid form at room temperature and is the best solvent for most of the solut...
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Control and Coordination Notes

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 All living organisms must control and coordinate the activities taking place inside their bodies. Coordination means making different cells, tissues, organs and organ systems work together properly and helping the organism respond correctly to changes in its surroundings. Why do organisms need control and coordination? A unicellular organism has only one cell, so controlling its life processes is comparatively simple. A multicellular organism contains many cells. These cells form tissues → organs → organ systems . Different organ systems perform different functions, but they must work together. For example, during running, the muscles need more oxygen. Therefore, breathing becomes faster and the heart pumps blood faster. This is an example of coordination between organ systems . Control and coordination also allow an organism to detect and respond to changes in the environment , called stimuli . Stimulus → Detection → Coordination → Response For example: Touching a hot object ...
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