Identify the plant growth promoters and plant | vedclass

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Question

(D) Plant growth regulators (PGRs) are classified based on their physiological effects on plant growth.$1$. Plant Growth Promoters: These are involved

Vedclass · Accepted Answer

Growth promoters: Auxin,Gibberellins,CytokininsGrowth inhibitors: Abscisic acid,Ethylene

Vedclass · Answer

(D) Plant growth regulators (PGRs) are classified based on their physiological effects on plant growth.$1$. Plant Growth Promoters: These are involved in growth-promoting activities such as cell division,cell enlargement,pattern formation,tropic growth,flowering,fruiting,and seed germination. Examples include Auxins,Gibberellins,and Cytokinins.$2$. Plant Growth Inhibitors: These play a role in growth-inhibiting activities such as dormancy and abscission. They also respond to wounds and stresses of biotic and abiotic origin. Abscisic acid $(ABA)$ is the primary growth inhibitor. Ethylene is a unique $PGR$ that can act as both a promoter and an inhibitor,but it is largely categorized as an inhibitor in the context of abscission and senescence.

Identify the plant growth promoters and plant growth inhibitors.

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Choose the correct statement:
$I.$ Cytokinin - Delay of leaf senescence
$II.$ Auxin - Apical dominance
$III.$ Ethylene - Seed germination
$IV.$ Gibberellins - Immature falling of leaves

Describe the following plant growth regulators:
$(1)$ Gibberellins
$(2)$ Cytokinins

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