Imagine a runner in a marathon. The same principle applies to plants, as temperature at night increases, the respiration rate increases and consequently temperature increases. This action could result in flower damage and poor plant growth. As mentioned above, roots respire too! One of the functions of the substrate is to serve as a site for air exchange between the root zone and atmosphere. In other words, roots breathe oxygen like we do. Different plants have different oxygen requirements for their root systems.
For example, the root system of a poinsettia requires a lot of oxygen, so it is best to use a substrate with high air porosity, while hostas can live well in a substrate with a high water holding capacity. A defense mechanism for plants under waterlogged or excessively dry conditions is to grow aerial roots from the stem just above the root crown; however, the ambient relative humidity must be high to sustain root growth outside the substrate.
Figure 1. Plant roots not only absorb water and nutrients for plant growth, but also respire. It is important that the growing medium has enough oxygen for plant roots to function properly. Source: Premier Tech. The key to ideal plant growth is to maintain the optimum root zone environment without sacrificing finances.
Did you know that roots can take oxygen from the water for respiration, although not as much as from the air? Another factor to consider is the substrate's temperature. As temperature in the root zone increases, the oxygen concentration of the water decreases. Correct answer: Water transports nutrients to plants and keeps them cool during transpiration.
Explanation : Water is one of just a few things plants need to survive. A few students in a science lab are arguing about a plant's needs for survival. Logan: "Plants only need air to grow and survive. Possible Answers: Bryce is correct because plants need water for hydration and nutrients. Logan is correct because plants need air in order to get carbon dioxide for photosynthesis.
Correct answer: Sophia is correct because plants need air to get carbon dioxide for photosynthesis and water for hydration and nutrients. Explanation : Sophia is correct in the argument about a plant's needs for survival. Plants get the materials they need for growth chiefly from air and water. Possible Answers: False. Correct answer: True. Explanation : The statement provided is true. What three things help a plant to grow?
Possible Answers: Air, water, and sunlight. Correct answer: Air, water, and sunlight. Explanation : Water, air, and sunlight are the most important things that a plant needs for growth. True or False: For a seed to germinate, it must receive an adequate amount of water. Possible Answers: True. Explanation : The statement "For a seed to germinate, it must receive an adequate amount of water.
Plants must have water to grow. What structure of the plant absorbs water? Possible Answers: Flower. Correct answer: Roots. Explanation : Humans and animals take in water by drinking it with their mouths. Possible Answers: Plants need air for the process of deposition and interrogation. Plants do not need air to survive because they cannot breathe. Plants need air for the processes of photosynthesis and respiration.
Plants need air to fill their lungs and create carbon dioxide. Correct answer: Plants need air for the processes of photosynthesis and respiration.
Explanation : In photosynthesis, plants take in carbon dioxide from the air and combine it with water absorbed through their roots. Possible Answers: Neither tray will have any growth because they did not add fertilizer, which plants need. Tray A will have had more growth because plants grow best in dark environments. Tray B will have had more growth because plants need sunlight to grow. Both of the trays will have the same growth because they both received equal amounts of water. Correct answer: Tray B will have had more growth because plants need sunlight to grow.
Explanation : In this scenario, the plants with the most growth would be the plants in tray B. Possible Answers: Making food. Correct answer: Getting water. Explanation : Plants' roots are vital to the absorption of water. Copyright Notice. View Tutors. MaryEileen Certified Tutor. Patricia Certified Tutor. Yasmin Certified Tutor.
Saint Thomas University, Bachelors, Education. Report an issue with this question If you've found an issue with this question, please let us know. Do not fill in this field. Louis, MO Or fill out the form below:. Hopefully you can see that plants and the process that makes oxygen is important for the plant, but also for humans and other animals as well!
What do you think would happen to the amount of oxygen available if we were to chop down all the trees? Do you think this would be good for humans and other animals?
If you would like to see this process in action, here is a little experiment you can try at home! Carefully take a green leaf from a plant and put it in a glass of water, make sure the leaf is fully submerged in the water. Leave the glass in the sun for an hour or so. When you come back, what can you see on the leaf and on the sides of the glass? View more questions.
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