The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot. Introduction: Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

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Answer 1

Question

Chapter 45.2, Problem 1CYL

Summary Introduction

To explain:

The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

Summary Introduction

To determine:

The mechanism through which plants balance root and shoot growth.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which some plants sense and respond to light and darkness.

Introduction:

Photoperiodism refers to the physiological reaction of different organisms towards the length of night or day. It categorizes plants into long-day, short-day, and day-neutral plants. Plants that flower, when they reach the proper developmental stage after germination independent of photoperiod, are known as day-neutral plants.

Summary Introduction

To explain:

The mechanism by which hormones coordinate maturation of seeds and fruit and control fruit ripening.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which hormones control senescence.

Introduction:

The progressive degradation of the functional body system is called senescence. It is basically the process of growing old. It is also referred to as biological aging. Aging refers to both cellular level and organism level. Both the cells and organism start to have continuing deteriorative changes.

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10. Your instructor will give you 2 amino acids during the activity session (video 2-7. A. First color all the polar and non-polar covalent bonds in the R groups of your 2 amino acids using the same colors as in #7. Do not color the bonds in the backbone of each amino acid. B. Next, color where all the hydrogen bonds, hydrophobic interactions and ionic bonds could occur in the R group of each amino acid. Use the same colors as in #7. Do not color the bonds in the backbone of each amino acid. C. Position the two amino acids on the page below in an orientation where the two R groups could bond together. Once you are satisfied, staple or tape the amino acids in place and label the bond that you formed between the two R groups. - Polar covalent Bond - Red - Non polar Covalent boND- yellow - Ionic BonD - PINK Hydrogen Bonn - Purple Hydrophobic interaction-green O=C-N H I. H HO H =O CH2 C-C-N HICK H HO H CH2 OH H₂N C = O

Answer 2

Question

Chapter 45.2, Problem 1CYL

Summary Introduction

To explain:

The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

Summary Introduction

To determine:

The mechanism through which plants balance root and shoot growth.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which some plants sense and respond to light and darkness.

Introduction:

Photoperiodism refers to the physiological reaction of different organisms towards the length of night or day. It categorizes plants into long-day, short-day, and day-neutral plants. Plants that flower, when they reach the proper developmental stage after germination independent of photoperiod, are known as day-neutral plants.

Summary Introduction

To explain:

The mechanism by which hormones coordinate maturation of seeds and fruit and control fruit ripening.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which hormones control senescence.

Introduction:

The progressive degradation of the functional body system is called senescence. It is basically the process of growing old. It is also referred to as biological aging. Aging refers to both cellular level and organism level. Both the cells and organism start to have continuing deteriorative changes.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 45.2, Problem 1CYL

Summary Introduction

To explain:

The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

Summary Introduction

To determine:

The mechanism through which plants balance root and shoot growth.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which some plants sense and respond to light and darkness.

Introduction:

Photoperiodism refers to the physiological reaction of different organisms towards the length of night or day. It categorizes plants into long-day, short-day, and day-neutral plants. Plants that flower, when they reach the proper developmental stage after germination independent of photoperiod, are known as day-neutral plants.

Summary Introduction

To explain:

The mechanism by which hormones coordinate maturation of seeds and fruit and control fruit ripening.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which hormones control senescence.

Introduction:

The progressive degradation of the functional body system is called senescence. It is basically the process of growing old. It is also referred to as biological aging. Aging refers to both cellular level and organism level. Both the cells and organism start to have continuing deteriorative changes.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 45.2, Problem 1CYL

Summary Introduction

To explain:

The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

Summary Introduction

To determine:

The mechanism through which plants balance root and shoot growth.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which some plants sense and respond to light and darkness.

Introduction:

Photoperiodism refers to the physiological reaction of different organisms towards the length of night or day. It categorizes plants into long-day, short-day, and day-neutral plants. Plants that flower, when they reach the proper developmental stage after germination independent of photoperiod, are known as day-neutral plants.

Summary Introduction

To explain:

The mechanism by which hormones coordinate maturation of seeds and fruit and control fruit ripening.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which hormones control senescence.

Introduction:

The progressive degradation of the functional body system is called senescence. It is basically the process of growing old. It is also referred to as biological aging. Aging refers to both cellular level and organism level. Both the cells and organism start to have continuing deteriorative changes.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 45.2, Problem 1CYL

Summary Introduction

To explain:

The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

Summary Introduction

To determine:

The mechanism through which plants balance root and shoot growth.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which some plants sense and respond to light and darkness.

Introduction:

Photoperiodism refers to the physiological reaction of different organisms towards the length of night or day. It categorizes plants into long-day, short-day, and day-neutral plants. Plants that flower, when they reach the proper developmental stage after germination independent of photoperiod, are known as day-neutral plants.

Summary Introduction

To explain:

The mechanism by which hormones coordinate maturation of seeds and fruit and control fruit ripening.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Summary Introduction

To determine:

The mechanism by which hormones control senescence.

Introduction:

The progressive degradation of the functional body system is called senescence. It is basically the process of growing old. It is also referred to as biological aging. Aging refers to both cellular level and organism level. Both the cells and organism start to have continuing deteriorative changes.

Answer 6

Chapter 45.2, Problem 1CYL

Summary Introduction

To explain:

The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Answer 7

Chapter 45.2, Problem 1CYL

Summary Introduction

To explain:

The roles of phytohormones in seed germination, seed dormancy, and directional growth of emerging root and shoot.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Answer 8

Summary Introduction

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

Answer 9

Summary Introduction

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

Answer 10

Summary Introduction

To determine:

The mechanism through which plants balance root and shoot growth.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Answer 11

Summary Introduction

To determine:

The mechanism through which plants balance root and shoot growth.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Answer 12

Summary Introduction

To determine:

The mechanism by which some plants sense and respond to light and darkness.

Introduction:

Photoperiodism refers to the physiological reaction of different organisms towards the length of night or day. It categorizes plants into long-day, short-day, and day-neutral plants. Plants that flower, when they reach the proper developmental stage after germination independent of photoperiod, are known as day-neutral plants.

Answer 13

Summary Introduction

To determine:

The mechanism by which some plants sense and respond to light and darkness.

Introduction:

Photoperiodism refers to the physiological reaction of different organisms towards the length of night or day. It categorizes plants into long-day, short-day, and day-neutral plants. Plants that flower, when they reach the proper developmental stage after germination independent of photoperiod, are known as day-neutral plants.

Answer 14

Summary Introduction

To explain:

The mechanism by which hormones coordinate maturation of seeds and fruit and control fruit ripening.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Answer 15

Summary Introduction

To explain:

The mechanism by which hormones coordinate maturation of seeds and fruit and control fruit ripening.

Introduction:

Phytohormones or plant growth regulators are chemicals that regulate the growth of plants. The term “phytohormones” was introduced by Went and Thimann in 1937. Plant hormones are present in extremely low concentrations within the cell. Plant hormones are present in trace amounts in plants.

Answer 16

Summary Introduction

To determine:

The mechanism by which hormones control senescence.

Introduction:

The progressive degradation of the functional body system is called senescence. It is basically the process of growing old. It is also referred to as biological aging. Aging refers to both cellular level and organism level. Both the cells and organism start to have continuing deteriorative changes.

Answer 17

Summary Introduction

To determine:

The mechanism by which hormones control senescence.

Introduction:

The progressive degradation of the functional body system is called senescence. It is basically the process of growing old. It is also referred to as biological aging. Aging refers to both cellular level and organism level. Both the cells and organism start to have continuing deteriorative changes.

Answer 18

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Answer 19

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Answer 20

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Answer 21

Ch. 45.1 - Prob. 1CYL Ch. 45.2 - Prob. 1Q Ch. 45.2 - Prob. 2Q Ch. 45.2 - Prob. 1CYL Ch. 45.3 - Prob. 1HYEW Ch. 45.3 - Prob. 1CYL Ch. 45.3 - Prob. 1CT Ch. 45 - Prob. 1FIB Ch. 45 - Prob. 2FIB Ch. 45 - Prob. 3FIB

To explain: The term thigmotropism. Introduction: Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.

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Chapter 45 Solutions

To explain:

The term thigmotropism.

Introduction:

Plants respond to various stimuli. These stimuli include gravity, water, light, touch, and chemicals. The growth of plant organs in response to these stimuli is termed as tropism. These can be positive or negative.