166860
Compare the statements $A$ and $B$ 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. Select the correct description.
1 Both the statements A and B are correct and $\mathrm{A}$ is the reason for $\mathrm{B}$
2 Statement A is correct and B is wrong
3 Statement A is wrong and B is correct
4 Both the statements A and B are correct and $\mathrm{A}$ is not the reason for $\mathrm{B}$
Explanation:
A According to the given statements A and B are correct and A is the reason for B. Hence, it is clear that option (a) is a correct answer. Here assertion describes a function of auxins, pruning of mulberry shoots reducing the effect of apical dominance and promotes lateral growth.
[Manipal-2009]
Plant growth and development
166862
During a tissue culture process the student added a chemical $X$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. What was added in the form of $\mathrm{X}$ to this set up ?
1 Auxin
2 Cytokinin
3 Gibberellins
4 Terpenes
Explanation:
B During a tissues culture process the student added a chemical $\mathrm{X}$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. For this set up was added cytokinin. Cytokinins are involved in performing cell division in plant roots and shoot system.
[VMMC-2015]
Plant growth and development
166863
Mitosis can be inhibited by
1 auxin
2 colchicine
3 cyclins
4 insulin
Explanation:
B Mitosis can be inhibited by colchicine. It is commonly known as Autumn crocus. Colchicine prevents cell from forming spindles during mitosis, inhibiting chromosomal segregation during anaphase. It induces multiple sets of chromosomes. It is also used in cancer therapy to suppress cell division.
[VMMC-2015]
Plant growth and development
166865
Gibberellin was obtained form :
1 Gibberella fujikuroi
2 Aspergillus
3 Yeast
4 none of the above
Explanation:
A In 1926 Japanese scientist Eiichi Kurosawa identified that foolish seedling disease was caused by the fungus Gibberella fujikuroi. It induces flowering in long day plants. This process is normally dependent on exposure to long days or low temperature. It controls major parts of plant, growth such as flower development, germination, and flowering time. It is a group of plant hormones responsible for plant growth.
166860
Compare the statements $A$ and $B$ 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. Select the correct description.
1 Both the statements A and B are correct and $\mathrm{A}$ is the reason for $\mathrm{B}$
2 Statement A is correct and B is wrong
3 Statement A is wrong and B is correct
4 Both the statements A and B are correct and $\mathrm{A}$ is not the reason for $\mathrm{B}$
Explanation:
A According to the given statements A and B are correct and A is the reason for B. Hence, it is clear that option (a) is a correct answer. Here assertion describes a function of auxins, pruning of mulberry shoots reducing the effect of apical dominance and promotes lateral growth.
[Manipal-2009]
Plant growth and development
166862
During a tissue culture process the student added a chemical $X$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. What was added in the form of $\mathrm{X}$ to this set up ?
1 Auxin
2 Cytokinin
3 Gibberellins
4 Terpenes
Explanation:
B During a tissues culture process the student added a chemical $\mathrm{X}$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. For this set up was added cytokinin. Cytokinins are involved in performing cell division in plant roots and shoot system.
[VMMC-2015]
Plant growth and development
166863
Mitosis can be inhibited by
1 auxin
2 colchicine
3 cyclins
4 insulin
Explanation:
B Mitosis can be inhibited by colchicine. It is commonly known as Autumn crocus. Colchicine prevents cell from forming spindles during mitosis, inhibiting chromosomal segregation during anaphase. It induces multiple sets of chromosomes. It is also used in cancer therapy to suppress cell division.
[VMMC-2015]
Plant growth and development
166865
Gibberellin was obtained form :
1 Gibberella fujikuroi
2 Aspergillus
3 Yeast
4 none of the above
Explanation:
A In 1926 Japanese scientist Eiichi Kurosawa identified that foolish seedling disease was caused by the fungus Gibberella fujikuroi. It induces flowering in long day plants. This process is normally dependent on exposure to long days or low temperature. It controls major parts of plant, growth such as flower development, germination, and flowering time. It is a group of plant hormones responsible for plant growth.
166860
Compare the statements $A$ and $B$ 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. Select the correct description.
1 Both the statements A and B are correct and $\mathrm{A}$ is the reason for $\mathrm{B}$
2 Statement A is correct and B is wrong
3 Statement A is wrong and B is correct
4 Both the statements A and B are correct and $\mathrm{A}$ is not the reason for $\mathrm{B}$
Explanation:
A According to the given statements A and B are correct and A is the reason for B. Hence, it is clear that option (a) is a correct answer. Here assertion describes a function of auxins, pruning of mulberry shoots reducing the effect of apical dominance and promotes lateral growth.
[Manipal-2009]
Plant growth and development
166862
During a tissue culture process the student added a chemical $X$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. What was added in the form of $\mathrm{X}$ to this set up ?
1 Auxin
2 Cytokinin
3 Gibberellins
4 Terpenes
Explanation:
B During a tissues culture process the student added a chemical $\mathrm{X}$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. For this set up was added cytokinin. Cytokinins are involved in performing cell division in plant roots and shoot system.
[VMMC-2015]
Plant growth and development
166863
Mitosis can be inhibited by
1 auxin
2 colchicine
3 cyclins
4 insulin
Explanation:
B Mitosis can be inhibited by colchicine. It is commonly known as Autumn crocus. Colchicine prevents cell from forming spindles during mitosis, inhibiting chromosomal segregation during anaphase. It induces multiple sets of chromosomes. It is also used in cancer therapy to suppress cell division.
[VMMC-2015]
Plant growth and development
166865
Gibberellin was obtained form :
1 Gibberella fujikuroi
2 Aspergillus
3 Yeast
4 none of the above
Explanation:
A In 1926 Japanese scientist Eiichi Kurosawa identified that foolish seedling disease was caused by the fungus Gibberella fujikuroi. It induces flowering in long day plants. This process is normally dependent on exposure to long days or low temperature. It controls major parts of plant, growth such as flower development, germination, and flowering time. It is a group of plant hormones responsible for plant growth.
166860
Compare the statements $A$ and $B$ 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. Select the correct description.
1 Both the statements A and B are correct and $\mathrm{A}$ is the reason for $\mathrm{B}$
2 Statement A is correct and B is wrong
3 Statement A is wrong and B is correct
4 Both the statements A and B are correct and $\mathrm{A}$ is not the reason for $\mathrm{B}$
Explanation:
A According to the given statements A and B are correct and A is the reason for B. Hence, it is clear that option (a) is a correct answer. Here assertion describes a function of auxins, pruning of mulberry shoots reducing the effect of apical dominance and promotes lateral growth.
[Manipal-2009]
Plant growth and development
166862
During a tissue culture process the student added a chemical $X$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. What was added in the form of $\mathrm{X}$ to this set up ?
1 Auxin
2 Cytokinin
3 Gibberellins
4 Terpenes
Explanation:
B During a tissues culture process the student added a chemical $\mathrm{X}$ to the set up. After a few days, new green shoots are observed to be appearing on the callus. For this set up was added cytokinin. Cytokinins are involved in performing cell division in plant roots and shoot system.
[VMMC-2015]
Plant growth and development
166863
Mitosis can be inhibited by
1 auxin
2 colchicine
3 cyclins
4 insulin
Explanation:
B Mitosis can be inhibited by colchicine. It is commonly known as Autumn crocus. Colchicine prevents cell from forming spindles during mitosis, inhibiting chromosomal segregation during anaphase. It induces multiple sets of chromosomes. It is also used in cancer therapy to suppress cell division.
[VMMC-2015]
Plant growth and development
166865
Gibberellin was obtained form :
1 Gibberella fujikuroi
2 Aspergillus
3 Yeast
4 none of the above
Explanation:
A In 1926 Japanese scientist Eiichi Kurosawa identified that foolish seedling disease was caused by the fungus Gibberella fujikuroi. It induces flowering in long day plants. This process is normally dependent on exposure to long days or low temperature. It controls major parts of plant, growth such as flower development, germination, and flowering time. It is a group of plant hormones responsible for plant growth.
