Biology
Plant Transport and Physiology
1,834 Questions
Access a comprehensive set of questions on plant transport mechanisms and physiological adaptations. Topics include water movement, translocation of food, and plant responses to external stimuli. These biology questions are essential for medical entrance exams and other science competitive tests.
Xylem and phloem transportTranspiration and evaporationPlant adaptationsGeotropic and phototropic responsesWater absorption by rootsRespiration in roots
Plant Transport and Physiology Questions
What is the term for the process by which forests absorb rainwater and hold soil in place?
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Photosynthesis
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Respiration
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Decomposition
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Transpiration
D
Correct answer
Explanation
Transpiration is the process by which plants release water vapor into the atmosphere. This process helps to cool the plant and also helps to absorb rainwater and hold soil in place. Forests play a vital role in regulating the water cycle, and transpiration is an important part of this process.
Which part of a vegetable plant is responsible for absorbing water and nutrients from the soil?
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Roots
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Stems
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Leaves
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Flowers
A
Correct answer
Explanation
Roots are the underground part of a vegetable plant that absorbs water and nutrients from the soil.
What is the role of vascular bundles in a vegetable plant?
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To transport water and nutrients from the roots to the leaves
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To store food and water
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To support the leaves and flowers
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To produce flowers and fruits
A
Correct answer
Explanation
Vascular bundles are responsible for transporting water and nutrients from the roots to the leaves.
What is the role of the mesophyll in a vegetable leaf?
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To carry out photosynthesis
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To store food and water
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To support the leaf structure
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To regulate the exchange of gases
A
Correct answer
Explanation
The mesophyll is the primary site of photosynthesis in a vegetable leaf.
What is the function of the stomata in a vegetable leaf?
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To regulate the exchange of gases
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To absorb water and nutrients from the soil
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To store food and water
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To support the leaf structure
A
Correct answer
Explanation
Stomata are small pores on the surface of a vegetable leaf that allow for the exchange of gases.
What is the role of plants in phytoremediation?
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They absorb and accumulate contaminants
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They release oxygen into the environment
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They control erosion
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All of the above
D
Correct answer
Explanation
Plants play a multifaceted role in phytoremediation by absorbing and accumulating contaminants, releasing oxygen into the environment, and controlling erosion.
What is the function of stomata in plant leaves?
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Gas exchange
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Water absorption
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Nutrient transport
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Photosynthesis
A
Correct answer
Explanation
Stomata are small pores on plant leaves that allow for the exchange of gases, such as carbon dioxide and oxygen, between the plant and the atmosphere.
What is the primary function of the xylem in plants?
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Water transport
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Nutrient transport
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Photosynthesis
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Hormone transport
A
Correct answer
Explanation
The xylem is a tissue in plants that is responsible for transporting water and minerals from the roots to the leaves.
What is the process by which plants lose water vapor through their leaves?
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Photosynthesis
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Respiration
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Transpiration
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Nitrogen fixation
C
Correct answer
Explanation
Transpiration is the process by which plants lose water vapor through their leaves, which helps to regulate temperature and transport water and nutrients.
What is the role of guard cells in stomata?
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Opening and closing stomata
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Photosynthesis
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Water transport
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Nutrient transport
A
Correct answer
Explanation
Guard cells are specialized cells that surround stomata and control their opening and closing, regulating gas exchange in the plant.
What is the function of the phloem in plants?
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Water transport
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Nutrient transport
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Photosynthesis
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Hormone transport
B
Correct answer
Explanation
The phloem is a tissue in plants that is responsible for transporting nutrients, such as sugars and amino acids, from the leaves to other parts of the plant.
What is the process by which plants lose water vapor through their leaves?
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Transpiration
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Guttation
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Wilting
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Plasmolysis
A
Correct answer
Explanation
Transpiration is the process by which plants lose water vapor through their leaves. It is driven by the evaporation of water from the surface of the leaves and is essential for the transport of water and nutrients from the roots to the leaves.
What is the function of the stomata on plant leaves?
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Gas exchange
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Water absorption
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Nutrient transport
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Photosynthesis
A
Correct answer
Explanation
Stomata are small pores on plant leaves that allow for gas exchange. They allow carbon dioxide to enter the leaf for photosynthesis and water vapor to escape from the leaf.
What is the process by which plants respond to changes in their environment?
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Tropism
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Nastic movement
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Phototropism
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Geotropism
A
Correct answer
Explanation
Tropism is the process by which plants respond to changes in their environment. It is a directional response, meaning that the plant grows or moves in a specific direction in response to the stimulus.
Which of the following is a type of plant tissue that transports water and nutrients from the roots to the leaves?
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Xylem
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Phloem
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Parenchyma
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Collenchyma
A
Correct answer
Explanation
Xylem is a type of plant tissue that transports water and nutrients from the roots to the leaves. It is composed of vessels, which are hollow tubes that allow for the efficient transport of water and minerals.