Solved Questions on Transportation in Plants
1. Consider the following statements and choose the correct option:
Statement 1: The process of transpiration helps in the movement of water from the roots to the leaves.
Statement 2: Transpiration is the loss of water in the form of water vapours through the stomata.
a) Statement 1 is correct but statement 2 is incorrect.
b) Statement 1 is incorrect but statement 2 is correct.
c) Both statements are correct.
d) Both statements are incorrect.
Answer: c) Statement 1 is correct because transpiration indeed helps in the movement of water from the roots to the leaves. Statement 2 is also correct because transpiration refers to the loss of water in the form of water vapour through the stomata on the surface of leaves.
2. A student placed a slice of potato in a concentrated salt solution. After some time, the potato slice appeared to shrink. What caused this?
a) Water moved into the potato slice from the salt solution.
b) Water moved out of the potato slice into the salt solution.
c) The potato slice absorbed salt from the solution.
d) The potato slice released water into the solution.
Answer: b) When a slice of potato is placed in a concentrated salt solution, the salt solution has a lower water concentration compared to the potato cells. This causes the water to move out of the potato cells through osmosis. As a result, the potato slice appears to shrink.
3. The diagram shows the human excretory system. Select the part(s) that filter the blood to remove waste and toxins from it.
a) A and B
b) A and C
c) B and D
d) C and D
Answer: b) A and C. Both kidneys in the human excretory system are responsible for filtering blood and removing waste and toxins from it. Each kidney performs the essential function of filtration, reabsorption, and secretion to maintain the body's fluid and eliminate waste products.
4. In the following question, you will find an assertion and a reason. Select the appropriate option that applies.
Assertion: The main function of red blood cells is to transport oxygen to body tissues.
Reasoning: Red blood cells contain a protein called haemoglobin, which binds to oxygen and carries it throughout the body.
a) Both the assertion and reasoning are true, and the reasoning is the correct explanation of the assertion.
b) Both the assertion and reasoning are true, but the reasoning is not the correct explanation of the assertion.
c) The assertion is true, but the reasoning is false.
d) The assertion is false, but the reasoning is true.
Answer: a) The assertion is true because the main function of red blood cells is indeed to transport oxygen to body tissues. This is accomplished by the presence of haemoglobin, a protein within red blood cells that binds to oxygen and carries it throughout the body. Therefore, the reasoning is a correct explanation for the assertion.
5. Look at the table below and correctly identify the blood vessels A, B, and C based on their description.
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Blood Vessel
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Function
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Characteristics
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A
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Carries deoxygenated blood from tissues and organs
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Thin, less muscular walls
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B
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Facilitates gas exchange between blood and tissues
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Very thin walls
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C
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Carries oxygenated blood to tissues and organs
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Thick, muscular walls
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a) A: Veins, B: Capillaries, C: Arteries
b) A: Arteries, B: Capillaries, C: Veins
c) A: Pulmonary Artery, B: Pulmonary Vein, C: Capillaries
d) A: Capillaries, B: Pulmonary Artery, C: Pulmonary Vein
Answer: a) A: Vein
B: Capillary
C: Artery
FAQs
1. What are the two main types of transportation in plants?
Plants use two forms of transportation: xylem transport, which moves water and minerals upward from roots to leaves, and phloem transport, which moves sugars, amino acids, and other organic molecules in both directions.
2. How does water move from roots to leaves in plants?
Water travels from roots to leaves via transpiration, a process in which water evaporates from the leaf surface, causing a negative pressure to force water upward via the xylem vessels. This process is influenced by variables such as sunshine, temperature, and humidity.
3. What are the factors that affect transportation in plants?
Factors that affect transportation in plants include environmental conditions (such as temperature, humidity, and light intensity), plant physiology (such as leaf surface area and stomatal density), and the availability of water and nutrients in the soil.
4. How do plants regulate water loss during transportation?
Plants regulate water loss during transport by opening and shutting stomata, which are tiny holes on the surface of leaves. Stomatal opening allows for gas exchange but also results in water loss via transpiration. Plants may conserve water by adjusting their stomatal aperture based on environmental inputs.
5. what are vascular tissues?
Plants' vascular tissues function similarly to their circulatory systems. They are in charge of carrying water, nutrients, and other vital components throughout the plant. The two primary kinds of vascular tissues are the xylem and phloem.
