Plant Growth and Development- Quiz 8

Seed dormancy can be broken by :

• ABA and GA₃

• GA₃ and ethylene

• IAA and ABA

• ABA and IPA

Which of the following is a potent weedicide ?

• IPA

• TIBA

• BAP

• 2, 4-D

Seedless fruits can be induced by

• ABA and IAA

• ABA and Zeatin

• IAA and GA₃

• Ethylene and ABA

Fruit and leaf drop at early stages can be prevented by the application of:

• Ethylene

• Auxins

• Gibberellic acid

• Cytokinins

Which of the following plant activity is not an example of growth promotion activity?

• Germination of seeds

• Cell division

• Delay in senescence

• Abscission

Cytokinin involves

• Kinetin, zeatin, BAP

• GA₃, IBA, Kinetin

• Zeatin, GA₃, BAP

• IAA, Zeatin, kinetin

Which of the following statement is wrong about Abscisic acid :

• It helps in general plant metabolism

• It is antagonistic to GA₃

• It helps in seed maturation & dormancy

• Morphogenesis

Vernalization

• Help in shortening the period between germination and flowering

• Is useless for monocots

• Is high temperature treatment to some annual crops

• More than one option is correct.

Removal of shoot tips is a very useful technique to boost the production of tealeaves. This is because :

• Gibberellins delay senescence of leaves.

• Gibberellins prevent bolting and are inactivated.

• Auxins prevent leaf drop at early stages.

• Effect of auxins is removed and growth of lateral buds is enhanced.

In order to increase the yield of sugarcane crop, which of the following plant growth regulators should be sprayed?

• Cytokinins

• Ethylene

• Auxins

• Gibberellin