NEET Test Series from KOTA - 10 Papers In MS WORD
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BIOXI15: PLANT GROWTH AND DEVELOPMENT
338188
Which of the following are phytohormones?
1 \({\rm{ABA, IAA}}\)
2 \(\mathrm{GA}_{3}, \mathrm{ABA}\)
3 \(\mathrm{C}_{2} \mathrm{H}_{4}\)
4 All are correct
Explanation:
The plant growth regulators (PGRs) are small, simple molecules of diverse chemical composition. They could be indole compounds (indole-3-acetic acid, IAA); adenine derivatives (N6 -furfurylamino purine, kinetin), derivatives of carotenoids (abscisic acid, ABA); terpenes (gibberellic acid, GA3 ) or gases (ethylene, \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}\) ). Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338189
Which of the following is shown by growth promoters?
1 \(1,2,3\) only
2 \(1,2,3,5,6\)
3 \(1,2,4,5\)
4 \(1,3,4,5,6\)
Explanation:
One group of PGRs known as plant growth promoters are involved in growth promoting activities, such as cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting and seed formation, e.g., auxins, gibberellins and cytokinins.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338190
6-furfuryl amino purine, 2, 4-dichlorophenoxy acetic acid and indole- 3 acetic acid are examples respectively for
1 synthetic auxin, kinetin and natural auxin.
2 gibberellin, natural auxin and kinetin.
3 natural auxin, kinetin and synthetic auxin.
4 kinetin, synthetic auxin and natural auxin.
Explanation:
6-furfuryl amino purine, 2,4 dichlorophenoxy acetic acid and indole 3 acetic acid are the examples of kinetin, synthetic auxins and natural auxins respectively. Kinetin stimulates cell division in plants. 2, 4 dichlorophenoxy acetic acid is a common systemic herbicide used in the control of broadleaf weeds. Indole - 3 acetic acid induces cell elongation and cell division and results in plant growth and development.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338191
Statement A : Plant growth regulators are variously described as plant growth substances, plant hormones or phytochromes in literature. Statement B : The PGR abscisic acid belongs to plant growth promoter group.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature. The PGR abscisic acid belongs to plant growth inhibitor group.
The plant growth regulators (PGRs) are small, simple molecules of diverse chemical composition. They could be indole compounds (indole-3-acetic acid, IAA); adenine derivatives (N6 -furfurylamino purine, kinetin), derivatives of carotenoids (abscisic acid, ABA); terpenes (gibberellic acid, GA3 ) or gases (ethylene, \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}\) ). Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338189
Which of the following is shown by growth promoters?
1 \(1,2,3\) only
2 \(1,2,3,5,6\)
3 \(1,2,4,5\)
4 \(1,3,4,5,6\)
Explanation:
One group of PGRs known as plant growth promoters are involved in growth promoting activities, such as cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting and seed formation, e.g., auxins, gibberellins and cytokinins.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338190
6-furfuryl amino purine, 2, 4-dichlorophenoxy acetic acid and indole- 3 acetic acid are examples respectively for
1 synthetic auxin, kinetin and natural auxin.
2 gibberellin, natural auxin and kinetin.
3 natural auxin, kinetin and synthetic auxin.
4 kinetin, synthetic auxin and natural auxin.
Explanation:
6-furfuryl amino purine, 2,4 dichlorophenoxy acetic acid and indole 3 acetic acid are the examples of kinetin, synthetic auxins and natural auxins respectively. Kinetin stimulates cell division in plants. 2, 4 dichlorophenoxy acetic acid is a common systemic herbicide used in the control of broadleaf weeds. Indole - 3 acetic acid induces cell elongation and cell division and results in plant growth and development.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338191
Statement A : Plant growth regulators are variously described as plant growth substances, plant hormones or phytochromes in literature. Statement B : The PGR abscisic acid belongs to plant growth promoter group.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature. The PGR abscisic acid belongs to plant growth inhibitor group.
The plant growth regulators (PGRs) are small, simple molecules of diverse chemical composition. They could be indole compounds (indole-3-acetic acid, IAA); adenine derivatives (N6 -furfurylamino purine, kinetin), derivatives of carotenoids (abscisic acid, ABA); terpenes (gibberellic acid, GA3 ) or gases (ethylene, \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}\) ). Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338189
Which of the following is shown by growth promoters?
1 \(1,2,3\) only
2 \(1,2,3,5,6\)
3 \(1,2,4,5\)
4 \(1,3,4,5,6\)
Explanation:
One group of PGRs known as plant growth promoters are involved in growth promoting activities, such as cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting and seed formation, e.g., auxins, gibberellins and cytokinins.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338190
6-furfuryl amino purine, 2, 4-dichlorophenoxy acetic acid and indole- 3 acetic acid are examples respectively for
1 synthetic auxin, kinetin and natural auxin.
2 gibberellin, natural auxin and kinetin.
3 natural auxin, kinetin and synthetic auxin.
4 kinetin, synthetic auxin and natural auxin.
Explanation:
6-furfuryl amino purine, 2,4 dichlorophenoxy acetic acid and indole 3 acetic acid are the examples of kinetin, synthetic auxins and natural auxins respectively. Kinetin stimulates cell division in plants. 2, 4 dichlorophenoxy acetic acid is a common systemic herbicide used in the control of broadleaf weeds. Indole - 3 acetic acid induces cell elongation and cell division and results in plant growth and development.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338191
Statement A : Plant growth regulators are variously described as plant growth substances, plant hormones or phytochromes in literature. Statement B : The PGR abscisic acid belongs to plant growth promoter group.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature. The PGR abscisic acid belongs to plant growth inhibitor group.
The plant growth regulators (PGRs) are small, simple molecules of diverse chemical composition. They could be indole compounds (indole-3-acetic acid, IAA); adenine derivatives (N6 -furfurylamino purine, kinetin), derivatives of carotenoids (abscisic acid, ABA); terpenes (gibberellic acid, GA3 ) or gases (ethylene, \({{\rm{C}}_{\rm{2}}}{{\rm{H}}_{\rm{4}}}\) ). Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338189
Which of the following is shown by growth promoters?
1 \(1,2,3\) only
2 \(1,2,3,5,6\)
3 \(1,2,4,5\)
4 \(1,3,4,5,6\)
Explanation:
One group of PGRs known as plant growth promoters are involved in growth promoting activities, such as cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting and seed formation, e.g., auxins, gibberellins and cytokinins.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338190
6-furfuryl amino purine, 2, 4-dichlorophenoxy acetic acid and indole- 3 acetic acid are examples respectively for
1 synthetic auxin, kinetin and natural auxin.
2 gibberellin, natural auxin and kinetin.
3 natural auxin, kinetin and synthetic auxin.
4 kinetin, synthetic auxin and natural auxin.
Explanation:
6-furfuryl amino purine, 2,4 dichlorophenoxy acetic acid and indole 3 acetic acid are the examples of kinetin, synthetic auxins and natural auxins respectively. Kinetin stimulates cell division in plants. 2, 4 dichlorophenoxy acetic acid is a common systemic herbicide used in the control of broadleaf weeds. Indole - 3 acetic acid induces cell elongation and cell division and results in plant growth and development.
BIOXI15: PLANT GROWTH AND DEVELOPMENT
338191
Statement A : Plant growth regulators are variously described as plant growth substances, plant hormones or phytochromes in literature. Statement B : The PGR abscisic acid belongs to plant growth promoter group.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
Plant growth regulators are variously described as plant growth substances, plant hormones or phytohormones in literature. The PGR abscisic acid belongs to plant growth inhibitor group.
