336461
Transpiration and root pressure cause water to rise in plants by
1 Pushing and pulling it, respectively
2 Pulling it upward
3 Pulling and pushing it, respectively
4 Pushing it upward
Explanation:
Transpiration, i.e., the loss of water by aerial parts of the plants, pulls water upwards from the xylem components. Root pressure causes water to rise in plants by pushing it upwards through the xylem vessels.
AIPMT - 2015
BIOXI11: TRANSPORT IN PLANTS
336462
Assertion : Maximum transpiration occurs in mesophyte than xerophytes. Reason : In mesophytes stomata are found on both surface of leaf and guard cells show frequent movement.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion.
BIOXI11: TRANSPORT IN PLANTS
336463
Which one of the following will not directly affect transpiration?
1 Temperature
2 Light
3 Wind speed
4 Chlorophyll content of leaves
Explanation:
Chlorophyll has no role to play in transpiration. As transpiration depends on rate of evaporation so temperature, light and wind speed affect rate of transpiration.
NCERT Exemplar
BIOXI11: TRANSPORT IN PLANTS
336464
A column of water with in xylem vessels of tall tress does not break under its weight because of
1 Positive root pressure
2 Dissolved sugar in water
3 Tensile strength of water
4 Lignification of xylem vessels
Explanation:
A column of water with in xylem vessels of tall tress does not break under its weight because of tensile strength of water
336461
Transpiration and root pressure cause water to rise in plants by
1 Pushing and pulling it, respectively
2 Pulling it upward
3 Pulling and pushing it, respectively
4 Pushing it upward
Explanation:
Transpiration, i.e., the loss of water by aerial parts of the plants, pulls water upwards from the xylem components. Root pressure causes water to rise in plants by pushing it upwards through the xylem vessels.
AIPMT - 2015
BIOXI11: TRANSPORT IN PLANTS
336462
Assertion : Maximum transpiration occurs in mesophyte than xerophytes. Reason : In mesophytes stomata are found on both surface of leaf and guard cells show frequent movement.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion.
BIOXI11: TRANSPORT IN PLANTS
336463
Which one of the following will not directly affect transpiration?
1 Temperature
2 Light
3 Wind speed
4 Chlorophyll content of leaves
Explanation:
Chlorophyll has no role to play in transpiration. As transpiration depends on rate of evaporation so temperature, light and wind speed affect rate of transpiration.
NCERT Exemplar
BIOXI11: TRANSPORT IN PLANTS
336464
A column of water with in xylem vessels of tall tress does not break under its weight because of
1 Positive root pressure
2 Dissolved sugar in water
3 Tensile strength of water
4 Lignification of xylem vessels
Explanation:
A column of water with in xylem vessels of tall tress does not break under its weight because of tensile strength of water
336461
Transpiration and root pressure cause water to rise in plants by
1 Pushing and pulling it, respectively
2 Pulling it upward
3 Pulling and pushing it, respectively
4 Pushing it upward
Explanation:
Transpiration, i.e., the loss of water by aerial parts of the plants, pulls water upwards from the xylem components. Root pressure causes water to rise in plants by pushing it upwards through the xylem vessels.
AIPMT - 2015
BIOXI11: TRANSPORT IN PLANTS
336462
Assertion : Maximum transpiration occurs in mesophyte than xerophytes. Reason : In mesophytes stomata are found on both surface of leaf and guard cells show frequent movement.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion.
BIOXI11: TRANSPORT IN PLANTS
336463
Which one of the following will not directly affect transpiration?
1 Temperature
2 Light
3 Wind speed
4 Chlorophyll content of leaves
Explanation:
Chlorophyll has no role to play in transpiration. As transpiration depends on rate of evaporation so temperature, light and wind speed affect rate of transpiration.
NCERT Exemplar
BIOXI11: TRANSPORT IN PLANTS
336464
A column of water with in xylem vessels of tall tress does not break under its weight because of
1 Positive root pressure
2 Dissolved sugar in water
3 Tensile strength of water
4 Lignification of xylem vessels
Explanation:
A column of water with in xylem vessels of tall tress does not break under its weight because of tensile strength of water
336461
Transpiration and root pressure cause water to rise in plants by
1 Pushing and pulling it, respectively
2 Pulling it upward
3 Pulling and pushing it, respectively
4 Pushing it upward
Explanation:
Transpiration, i.e., the loss of water by aerial parts of the plants, pulls water upwards from the xylem components. Root pressure causes water to rise in plants by pushing it upwards through the xylem vessels.
AIPMT - 2015
BIOXI11: TRANSPORT IN PLANTS
336462
Assertion : Maximum transpiration occurs in mesophyte than xerophytes. Reason : In mesophytes stomata are found on both surface of leaf and guard cells show frequent movement.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect
Explanation:
Both Assertion and Reason are true and Reason is correct explanation of Assertion.
BIOXI11: TRANSPORT IN PLANTS
336463
Which one of the following will not directly affect transpiration?
1 Temperature
2 Light
3 Wind speed
4 Chlorophyll content of leaves
Explanation:
Chlorophyll has no role to play in transpiration. As transpiration depends on rate of evaporation so temperature, light and wind speed affect rate of transpiration.
NCERT Exemplar
BIOXI11: TRANSPORT IN PLANTS
336464
A column of water with in xylem vessels of tall tress does not break under its weight because of
1 Positive root pressure
2 Dissolved sugar in water
3 Tensile strength of water
4 Lignification of xylem vessels
Explanation:
A column of water with in xylem vessels of tall tress does not break under its weight because of tensile strength of water
