337877
Compare the statements A and B. Select the correct description. Statement A : Auxins promote apical dominance by suppressing the activity of lateral buds. Statement B : In moriculture, periodic pruning of shoot tips is done to make mulberry plants bushy.
1 Statement A is correct, and Statement B is wrong.
2 Statement A is wrong and Statement B is correct.
3 Both the statements ar correct, and Statement A is not the reason for Statement B.
4 Both the statements are correct, and Statement A is the reason for Statement B.
Explanation:
The presence of auxin in the apical bud, can be tested by applying some auxin containing paste on the cut portion of the shoot. It can be seen that the axillary bud is prevented from growing, hence confirming the role of auxin in apical dominance. If axillary bud resumes growth, the plant will have many branches and hence many leaves. This is commonly used to produce bushy plants.
KCET - 2009
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337878
Which of the following PGR is widely used as herbicide?
1 Auxin
2 Gibberellic acid
3 Cytokinins
4 Ethylene
Explanation:
Auxins are widely used as herbicides. 2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants. It is used to prepare weed-free lawns by gardeners.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337879
The pineapple which is under natural conditions is difficult to blossom, has been made to produce fruits throughout the year by application of
1 NAA, 2, 4 - D
2 Cytokinin
3 Phenyl acetic acid
4 IAA, IBA
Explanation:
NAA and 2, 4-D are synthetic auxin normally inhibit flowering. It delays flowering and plants can be kept in vegetative period for long time. In mango, litchi, apple and pineapple auxin induces flowering.
AIPMT - 2013
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337880
Select the correct statements regarding auxins. I. Auxins promote flowering e.g. in pineapple and promote abscission of new leaves and fruits. II. Auxin controls dicot weed
1 I and II
2 II is correct
3 I is correct
4 Both are wrong
Explanation:
Auxins promote flowering e.g. in pineapples. They help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits
337877
Compare the statements A and B. Select the correct description. Statement A : Auxins promote apical dominance by suppressing the activity of lateral buds. Statement B : In moriculture, periodic pruning of shoot tips is done to make mulberry plants bushy.
1 Statement A is correct, and Statement B is wrong.
2 Statement A is wrong and Statement B is correct.
3 Both the statements ar correct, and Statement A is not the reason for Statement B.
4 Both the statements are correct, and Statement A is the reason for Statement B.
Explanation:
The presence of auxin in the apical bud, can be tested by applying some auxin containing paste on the cut portion of the shoot. It can be seen that the axillary bud is prevented from growing, hence confirming the role of auxin in apical dominance. If axillary bud resumes growth, the plant will have many branches and hence many leaves. This is commonly used to produce bushy plants.
KCET - 2009
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337878
Which of the following PGR is widely used as herbicide?
1 Auxin
2 Gibberellic acid
3 Cytokinins
4 Ethylene
Explanation:
Auxins are widely used as herbicides. 2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants. It is used to prepare weed-free lawns by gardeners.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337879
The pineapple which is under natural conditions is difficult to blossom, has been made to produce fruits throughout the year by application of
1 NAA, 2, 4 - D
2 Cytokinin
3 Phenyl acetic acid
4 IAA, IBA
Explanation:
NAA and 2, 4-D are synthetic auxin normally inhibit flowering. It delays flowering and plants can be kept in vegetative period for long time. In mango, litchi, apple and pineapple auxin induces flowering.
AIPMT - 2013
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337880
Select the correct statements regarding auxins. I. Auxins promote flowering e.g. in pineapple and promote abscission of new leaves and fruits. II. Auxin controls dicot weed
1 I and II
2 II is correct
3 I is correct
4 Both are wrong
Explanation:
Auxins promote flowering e.g. in pineapples. They help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits
337877
Compare the statements A and B. Select the correct description. Statement A : Auxins promote apical dominance by suppressing the activity of lateral buds. Statement B : In moriculture, periodic pruning of shoot tips is done to make mulberry plants bushy.
1 Statement A is correct, and Statement B is wrong.
2 Statement A is wrong and Statement B is correct.
3 Both the statements ar correct, and Statement A is not the reason for Statement B.
4 Both the statements are correct, and Statement A is the reason for Statement B.
Explanation:
The presence of auxin in the apical bud, can be tested by applying some auxin containing paste on the cut portion of the shoot. It can be seen that the axillary bud is prevented from growing, hence confirming the role of auxin in apical dominance. If axillary bud resumes growth, the plant will have many branches and hence many leaves. This is commonly used to produce bushy plants.
KCET - 2009
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337878
Which of the following PGR is widely used as herbicide?
1 Auxin
2 Gibberellic acid
3 Cytokinins
4 Ethylene
Explanation:
Auxins are widely used as herbicides. 2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants. It is used to prepare weed-free lawns by gardeners.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337879
The pineapple which is under natural conditions is difficult to blossom, has been made to produce fruits throughout the year by application of
1 NAA, 2, 4 - D
2 Cytokinin
3 Phenyl acetic acid
4 IAA, IBA
Explanation:
NAA and 2, 4-D are synthetic auxin normally inhibit flowering. It delays flowering and plants can be kept in vegetative period for long time. In mango, litchi, apple and pineapple auxin induces flowering.
AIPMT - 2013
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337880
Select the correct statements regarding auxins. I. Auxins promote flowering e.g. in pineapple and promote abscission of new leaves and fruits. II. Auxin controls dicot weed
1 I and II
2 II is correct
3 I is correct
4 Both are wrong
Explanation:
Auxins promote flowering e.g. in pineapples. They help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits
337877
Compare the statements A and B. Select the correct description. Statement A : Auxins promote apical dominance by suppressing the activity of lateral buds. Statement B : In moriculture, periodic pruning of shoot tips is done to make mulberry plants bushy.
1 Statement A is correct, and Statement B is wrong.
2 Statement A is wrong and Statement B is correct.
3 Both the statements ar correct, and Statement A is not the reason for Statement B.
4 Both the statements are correct, and Statement A is the reason for Statement B.
Explanation:
The presence of auxin in the apical bud, can be tested by applying some auxin containing paste on the cut portion of the shoot. It can be seen that the axillary bud is prevented from growing, hence confirming the role of auxin in apical dominance. If axillary bud resumes growth, the plant will have many branches and hence many leaves. This is commonly used to produce bushy plants.
KCET - 2009
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337878
Which of the following PGR is widely used as herbicide?
1 Auxin
2 Gibberellic acid
3 Cytokinins
4 Ethylene
Explanation:
Auxins are widely used as herbicides. 2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants. It is used to prepare weed-free lawns by gardeners.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337879
The pineapple which is under natural conditions is difficult to blossom, has been made to produce fruits throughout the year by application of
1 NAA, 2, 4 - D
2 Cytokinin
3 Phenyl acetic acid
4 IAA, IBA
Explanation:
NAA and 2, 4-D are synthetic auxin normally inhibit flowering. It delays flowering and plants can be kept in vegetative period for long time. In mango, litchi, apple and pineapple auxin induces flowering.
AIPMT - 2013
BIOXI15: PLANT GROWTH AND DEVELOPMENT
337880
Select the correct statements regarding auxins. I. Auxins promote flowering e.g. in pineapple and promote abscission of new leaves and fruits. II. Auxin controls dicot weed
1 I and II
2 II is correct
3 I is correct
4 Both are wrong
Explanation:
Auxins promote flowering e.g. in pineapples. They help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits
