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Consider the following statements:
Xylem can transport in both an upward and downward direction, while Phloem can transport only in upwards direction.
Xylem transports water and minerals while Phloem transports food and nutrients.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'B'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements: Xylem can transport in both an ...
Explanation:
The correct answer is option B, which states that only statement 2 is correct.
Statement 1: Xylem can transport in both an upward and downward direction, while Phloem can transport only in an upwards direction.
Statement 2: Xylem transports water and minerals while Phloem transports food and nutrients.
Let's analyze each statement in detail:
Statement 1: Xylem can transport in both an upward and downward direction, while Phloem can transport only in an upwards direction.
- Xylem is a complex tissue in plants responsible for the transport of water and minerals from the roots to the leaves.
- The movement of water and minerals in xylem occurs through two processes: transpiration and root pressure.
- Transpiration is the process by which water is transported upwards from the roots to the leaves due to the evaporation of water from the stomata in the leaves.
- Root pressure is the process by which water and minerals are pushed upwards from the roots to the leaves due to osmotic pressure.
- However, xylem cannot transport water and minerals downwards. The movement of water and minerals in the xylem is unidirectional, from the roots to the leaves.
On the other hand,
- Phloem is another complex tissue in plants responsible for the transport of food and nutrients from the leaves to the other parts of the plant.
- The movement of food and nutrients in phloem occurs through a process called translocation.
- Translocation is the process by which organic substances, such as sugars and amino acids, are transported from the source (usually leaves) to the sink (other parts of the plant) through the phloem.
- Unlike xylem, phloem can transport food and nutrients in both upward and downward directions, depending on the plant's needs.
Statement 2: Xylem transports water and minerals while Phloem transports food and nutrients.
- This statement is correct. Xylem is responsible for the transport of water and minerals, while phloem is responsible for the transport of food and nutrients.
- Water and minerals are absorbed by the roots and transported through the xylem to the leaves for photosynthesis and other metabolic processes.
- Food, which is produced in the leaves through photosynthesis, is transported through the phloem to the other parts of the plant, such as the roots, stems, and fruits.
Therefore, the correct answer is option B - only statement 2 is correct.
The correct answer is option B, which states that only statement 2 is correct.
Statement 1: Xylem can transport in both an upward and downward direction, while Phloem can transport only in an upwards direction.
Statement 2: Xylem transports water and minerals while Phloem transports food and nutrients.
Let's analyze each statement in detail:
Statement 1: Xylem can transport in both an upward and downward direction, while Phloem can transport only in an upwards direction.
- Xylem is a complex tissue in plants responsible for the transport of water and minerals from the roots to the leaves.
- The movement of water and minerals in xylem occurs through two processes: transpiration and root pressure.
- Transpiration is the process by which water is transported upwards from the roots to the leaves due to the evaporation of water from the stomata in the leaves.
- Root pressure is the process by which water and minerals are pushed upwards from the roots to the leaves due to osmotic pressure.
- However, xylem cannot transport water and minerals downwards. The movement of water and minerals in the xylem is unidirectional, from the roots to the leaves.
On the other hand,
- Phloem is another complex tissue in plants responsible for the transport of food and nutrients from the leaves to the other parts of the plant.
- The movement of food and nutrients in phloem occurs through a process called translocation.
- Translocation is the process by which organic substances, such as sugars and amino acids, are transported from the source (usually leaves) to the sink (other parts of the plant) through the phloem.
- Unlike xylem, phloem can transport food and nutrients in both upward and downward directions, depending on the plant's needs.
Statement 2: Xylem transports water and minerals while Phloem transports food and nutrients.
- This statement is correct. Xylem is responsible for the transport of water and minerals, while phloem is responsible for the transport of food and nutrients.
- Water and minerals are absorbed by the roots and transported through the xylem to the leaves for photosynthesis and other metabolic processes.
- Food, which is produced in the leaves through photosynthesis, is transported through the phloem to the other parts of the plant, such as the roots, stems, and fruits.
Therefore, the correct answer is option B - only statement 2 is correct.
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Community Answer
Consider the following statements: Xylem can transport in both an ...
- Xylem consists of tracheids, vessels, xylem parenchyma, and xylem fibers. The cells have thick walls, and many of them are dead cells. Tracheids and vessels are tubular structures. This allows them to transport water and minerals vertically. The parenchyma stores food and helps in the sideways conduction of water. Fibres are mainly supportive in function. Xylem occupies the center of the vascular bundle. Water and minerals are transport from roots to aerial parts of the plant by Xylem. Hence, statement 1 is not correct.
- Phloem is made up of four types of elements: sieve tubes, companion cells, phloem fibers, and the phloem parenchyma. Sieve tubes are tubular cells with perforated walls. Phloem is unlike xylem in that materials can move in both directions in it. Phloem transports food from leaves to other parts of the plant. Except for phloem fibers, phloem cells are living cells. Phloem occurs on the outer side of the vascular bundle. Transportation of food and nutrients such as sugar and amino acids from leaves to storage organs and growing parts of plants done by Phloem. This movement of substances is called translocation. Hence, statement 2 is correct.
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Consider the following statements: Xylem can transport in both an upward and downward direction, while Phloem can transport only in upwards direction. Xylem transports water and minerals while Phloem transports food and nutrients. Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'B'. Can you explain this answer?
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