Transport in plant
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1. What role do guard cells play in the opening and closing of stomata?
Guard cells regulate the opening and closing of stomata by changing their shape and controlling the size of the stomatal pore.
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2. Which gas is primarily exchanged through stomata during the process of transpiration?
Oxygen (O2) is primarily exchanged through stomata during transpiration, while carbon dioxide (CO2) is taken in for photosynthesis.
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3. What is the term for the loss of water vapor from the aerial parts of a plant, primarily through stomata in the leaves?
Transpiration is the process of losing water vapor from the aerial parts of a plant, mainly through stomata in the leaves.
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4. In which direction does phloem transport organic nutrients within a plant?
Phloem transports organic nutrients bidirectionally, both upward (from source to sink) and downward (from leaves to roots).
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5. Which of the following plant tissues is responsible for lateral growth and the formation of secondary xylem and phloem?
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6. What are the small openings on the surface of leaves that allow for the exchange of gases and the loss of water vapor in plants called?
Stomata are the small openings on the surface of leaves that allow for the exchange of gases (such as carbon dioxide and oxygen) and the loss of water vapor through transpiration.
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7. Which force is primarily responsible for the movement of water and minerals through the xylem from the roots to the leaves in a plant?
Transpiration pull, driven by the evaporation of water from the leaves, creates a negative pressure that pulls water and minerals up through the xylem from the roots to the leaves.
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8. What is the process by which water and minerals are absorbed from the soil by plant roots and transported to the rest of the plant?
Root pressure is the process by which water and minerals are absorbed from the soil by plant roots and transported to the rest of the plant.
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9. Which tissue in plants is responsible for the transport of organic nutrients, such as sugars, from the leaves to other parts of the plant?
The phloem is responsible for the transport of organic nutrients, including sugars, from the leaves (source) to other parts of the plant (sink).
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10. What is the primary function of the xylem in plants?
The primary function of the xylem is to transport water and minerals from the roots to other parts of the plant.
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Emily Smith
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