Among the different forms of electromagnetic radiation emitted by the sun, which form is absorbed by plants for photosynthesis?
Multiple Choice
Microwaves
Infrared
Gamma rays
Ultraviolet
Visible light
The Correct Answer is E
Choice A rationale: Microwaves are a type of electromagnetic radiation with low energy and long wavelengths. They are not absorbed by plants for photosynthesis, but rather pass through them or are reflected by them¹.
Choice B rationale: Infrared is a type of electromagnetic radiation with low energy and long wavelengths. It is not absorbed by plants for photosynthesis, but rather heats up the plant tissues or is reflected by them².
Choice C rationale: Gamma rays are a type of electromagnetic radiation with high energy and short wavelengths. They are not absorbed by plants for photosynthesis, but rather damage the plant cells or are blocked by the atmosphere³.
Choice D rationale: Ultraviolet is a type of electromagnetic radiation with high energy and short wavelengths. It is not absorbed by plants for photosynthesis, but rather harms the plant pigments or is filtered by the ozone layer⁴.
Choice E rationale: Visible light is a type of electromagnetic radiation with moderate energy and wavelengths. It is the only form of electromagnetic radiation that is absorbed by plants for photosynthesis, specifically by the pigments such as chlorophyll and carotenoids in the photosystems⁵. Visible light consists of a spectrum of colors, ranging from violet to red, and plants use different colors for different aspects of photosynthesis⁶.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration across a semi-permeable membrane. Diffusion stops when there is no net movement of particles across the membrane, which means that the rate of diffusion in one direction is equal to the rate of diffusion in the opposite direction.
This does not necessarily mean that there is an equal concentration of particles on both sides of the membrane, but rather that there is a dynamic equilibrium between the two sides. For example, if a semi-permeable membrane separates a solution of 10% sugar and 90% water from a solution of 20% sugar and 80% water, diffusion will occur until the sugar concentration on both sides is 15%.
However, if the membrane only allows water to pass through, diffusion will occur until the water concentration on both sides is equal, which means that the sugar concentration on one side will be higher than the other. Therefore, diffusion does not always result in an equal concentration of particles on both sides of a semi-permeable membrane.
Correct Answer is {"dropdown-group-1":"C"}
Explanation
Choice A rationale: Osmotic is incorrect because osmotic is an adjective that describes the movement of water across a semipermeable membrane, not a type of solution. Osmosis is the process by which water moves from a region of high water concentration to a region of low water concentration.
Choice B rationale: Isotonic is incorrect because isotonic is a type of solution that has the same concentration of water as the cell placed in the solution. In an isotonic solution, there is no net movement of water across the cell membrane.
Choice C rationale: Hypertonic is correct because hypertonic is a type of solution that has a lower concentration of water than the cell placed in the solution. In a hypertonic solution, water moves out of the cell and into the solution by osmosis, causing the cell to shrink.
Choice D rationale: Diffusive is incorrect because diffusive is an adjective that describes the movement of molecules from a region of high concentration to a region of low concentration, not a type of solution. Diffusion is the process by which molecules move across a membrane or a space due to their random motion.
Choice E rationale: Hypotonic is incorrect because hypotonic is a type of solution that has a higher concentration of water than the cell placed in the solution. In a hypotonic solution, water moves into the cell and out of the solution by osmosis, causing the cell to swell.
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