The growth inhibiting and promoting functions of some hormones in different plant parts at different times of their life cycle, with the help of examples. Introduction: Plant hormones are the small molecules that regulate their growth, senescence, and flowering. The plant hormones are commonly called phytochromes. Some plant hormones like auxin help in the growth of plant parts and some like ethylene inhibit their growth. The other hormones play various roles in the regulation of plant growth and survival.

Question

Hormones and signal pathways Complete the following paragraph to describe signal transduction as it occurs within plants. Choices may be used more than once or not at all. Chemical signals called play an important role in a plant's ability to respond to a stimulus. These signals bind to receptors, the first step in a cellular response called a may be located in the plasma membrane, the cytoplasm, the nucleus, or the endoplasmic reticulum. The series of relay proteins or enzymes activated by the hormone binding the receptor make up the Some responses are immediate, while others require a like Ca*, to initiate a cellular response. The result of the transduction pathway is a which is often the transcription of specific genes, resulting in some measurable change. hormones reflex arc signal transduction pathway Signal transducers second messenger response Receptor proteins first messenger

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Chapter 37.1, Problem 2SB

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To review:

The growth inhibiting and promoting functions of some hormones in different plant parts at different times of their life cycle, with the help of examples.

Introduction:

Plant hormones are the small molecules that regulate their growth, senescence, and flowering. The plant hormones are commonly called phytochromes. Some plant hormones like auxin help in the growth of plant parts and some like ethylene inhibit their growth. The other hormones play various roles in the regulation of plant growth and survival.

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Hormones and signal pathways Complete the following paragraph to describe signal transduction as it occurs within plants. Choices may be used more than once or not at all. Chemical signals called play an important role in a plant's ability to respond to a stimulus. These signals bind to receptors, the first step in a cellular response called a may be located in the plasma membrane, the cytoplasm, the nucleus, or the endoplasmic reticulum. The series of relay proteins or enzymes activated by the hormone binding the receptor make up the Some responses are immediate, while others require a like Ca*, to initiate a cellular response. The result of the transduction pathway is a which is often the transcription of specific genes, resulting in some measurable change. hormones reflex arc signal transduction pathway Signal transducers second messenger response Receptor proteins first messenger

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