18 Questions
What is responsible for plant growth and reproduction?
Carbohydrates formed from light energy, carbon dioxide, and water
How does photosynthesis slow down if light intensity is diminished?
Carbohydrate production decreases
What is the unit used to measure light intensity?
Lux
Which wavelengths of light are readily utilized in photosynthesis?
400-700nm
Why is UV light harmful to plants?
It is available in shorter wavelengths
How does excessive light intensity affect plant growth?
Slows down growth due to chloroplast injury
What happens to enzyme activity at temperatures above the optimum range for plant growth?
Enzymes become inactive
Why is ventilation important in maintaining relative humidity levels in greenhouses?
To maintain desirable humidity levels
What effect does temperature have on enzyme-controlled reactions in plants?
Enzyme reactions speed up with increasing temperature
Why is it crucial to maintain a specific temperature range in greenhouses for plant growth?
To maintain enzyme activity
How does the moisture added by evapotranspiration impact relative humidity in greenhouses?
Increases relative humidity
Which type of light is stated to be not involved in the plant process according to the text?
Infrared light
What is the function of a polyhouse in agriculture?
Control temperature and humidity for plant growth
How does the greenhouse effect contribute to global warming?
By trapping reflected radiation from the Earth's surface
What happens to shorter wave radiation that enters a greenhouse during the daytime?
It gets reflected as long wave radiation and is trapped inside
How does the covering material of a greenhouse affect radiation?
Transparent to shorter wave radiation and opaque to longer wave radiation
What is the phenomenon known as when the blanket of carbon dioxide in the atmosphere leads to an increase in ambient temperature?
Greenhouse effect
How does the increase in atmospheric temperature due to the greenhouse effect impact plant growth?
Promotes plant growth by providing optimal conditions
Learn about how light energy, carbon dioxide, and water are essential for the process of photosynthesis in plants, leading to the production of carbohydrates. Understand the relationship between light intensity, photosynthesis rate, and plant growth.
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