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aden grows geraniums in his greenhouse. He has noticed that his flowers are not growing very well. The greenhouse is in the shade for much of the day and maintains a temperature of 23°C (74°F). What might be the problem and how could Jaden do to fix it?

aden grows geraniums in his greenhouse. He has noticed that his flowers are not growing very well. The greenhouse is in the shade for much of the day and maintains a temperature of 23°C (74°F). What might be the problem and how could Jaden do to fix it?

Biology: The Unity and Diversity of Life (MindTap Course List)
Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN:9781305073951
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Chapter28: Plant Nutrition And Transport
Section: Chapter Questions
Problem 4DAA: TCE Uptake by Transgenic Plants Plants used for phytoremediation take up organic pollutants, then...
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Jaden grows geraniums in his greenhouse. He has noticed that his flowers are not growing very well. The greenhouse is in the shade for much of the day and maintains a temperature of 23°C (74°F). What might be the problem and how could Jaden do to fix it?
STEM Data Analysis Optimal Conditions for Photosynthesis Plants use photosynthesis to manufacture the food they need to grow and support cell processes. Different plants require different amounts of light, water, and carbon dioxide. They also thrive at different temperatures. Growth chambers allow plant biologists to maintain the most favorable growing environment for each species of plant. Temperature: Temperature, including air temperature and soil temperature, affects most processes of plant growth: photosynthesis, water intake, nutrient intake, and cell division. High temperatures can interfere with photosynthesis by causing the enzymes that regulate the process to "unravel." Cold temperatures can damage plant roots and even cause the plant to die. At temperatures below 7°C (about 45°F), the roots of a plant cannot take up water and nutrients. Light: Plants get the energy they need for photosynthesis from light. Plants use only some of the wavelengths of light in sunlight to support the light-dependent reactions of photosynthesis. Light sources other than sunlight, such as fluorescent light and grow lights also emit the same range of wavelengths. Too little light, too much light, or the wrong kind of light, will slow down the growth plants. Carbon Dioxide: Plants need carbon dioxide for photosynthesis. They take carbon dioxide in from the atmosphere through tiny holes in their leaves. It might seem logical that an increase of carbon dioxide in the atmosphere would help plants grow. But the increase in carbon dioxide could cause the temperature to rise to a point that is damaging to some plants. Water: Plants absorb water from the soil through their roots. The water is transported to all cells in the plants. Excess water is released through pores in a plant's leaves called stomata. When the air around the plant becomes saturated with water, the humidity rises. This prevents water vapor from evaporating from the stomata and water from being drawn up from the roots. This can cause a water deficit in the plant, causing the plant to close its stomata. With the stomata closed, carbon dioxide is blocked from entering the plant, slowing photosynthesis. Analyze It Different plants have different requirements for photosynthesis and growth. Geraniums are hardy plants that are commonly used in home gardens. They generally have white, red, or pink flowers and do well in most climates. The data shows the temperature and light needs of geraniums. Use the data to answer the questions. Ideal Daytime Temperatures: 21°C-23°C (about 70-75°F) Ideal Nighttime Temperature: 16°C-18°C (about 60-65°F) Natural Light: at least 6 hours of direct sunlight Artificial light: 12 inches below a 40-watt fluorescent bulb for 16 hours per day
Transcribed Image Text:STEM Data Analysis Optimal Conditions for Photosynthesis Plants use photosynthesis to manufacture the food they need to grow and support cell processes. Different plants require different amounts of light, water, and carbon dioxide. They also thrive at different temperatures. Growth chambers allow plant biologists to maintain the most favorable growing environment for each species of plant. Temperature: Temperature, including air temperature and soil temperature, affects most processes of plant growth: photosynthesis, water intake, nutrient intake, and cell division. High temperatures can interfere with photosynthesis by causing the enzymes that regulate the process to "unravel." Cold temperatures can damage plant roots and even cause the plant to die. At temperatures below 7°C (about 45°F), the roots of a plant cannot take up water and nutrients. Light: Plants get the energy they need for photosynthesis from light. Plants use only some of the wavelengths of light in sunlight to support the light-dependent reactions of photosynthesis. Light sources other than sunlight, such as fluorescent light and grow lights also emit the same range of wavelengths. Too little light, too much light, or the wrong kind of light, will slow down the growth plants. Carbon Dioxide: Plants need carbon dioxide for photosynthesis. They take carbon dioxide in from the atmosphere through tiny holes in their leaves. It might seem logical that an increase of carbon dioxide in the atmosphere would help plants grow. But the increase in carbon dioxide could cause the temperature to rise to a point that is damaging to some plants. Water: Plants absorb water from the soil through their roots. The water is transported to all cells in the plants. Excess water is released through pores in a plant's leaves called stomata. When the air around the plant becomes saturated with water, the humidity rises. This prevents water vapor from evaporating from the stomata and water from being drawn up from the roots. This can cause a water deficit in the plant, causing the plant to close its stomata. With the stomata closed, carbon dioxide is blocked from entering the plant, slowing photosynthesis. Analyze It Different plants have different requirements for photosynthesis and growth. Geraniums are hardy plants that are commonly used in home gardens. They generally have white, red, or pink flowers and do well in most climates. The data shows the temperature and light needs of geraniums. Use the data to answer the questions. Ideal Daytime Temperatures: 21°C-23°C (about 70-75°F) Ideal Nighttime Temperature: 16°C-18°C (about 60-65°F) Natural Light: at least 6 hours of direct sunlight Artificial light: 12 inches below a 40-watt fluorescent bulb for 16 hours per day
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