The time and the geological period when the last common ancestor of the seed plants as well as ferns lived. Given: The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants. Figure 1: The geological timescale of the origin of various embryophytes. Introduction: Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Question

Want to see more full solutions like this?

Answer 1

Question

Chapter 27, Problem 1Q

Summary Introduction

To review:

The time and the geological period when the last common ancestor of the seed plants as well as ferns lived.

Given:

The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.

Figure 1: The geological timescale of the origin of various embryophytes.

Introduction:

Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Expert Solution & Answer

Explanation of Solution

It can be clearly observed from Figure 1 that the common ancestor of ferns as well as the seed plants originated about 390 million years ago in the mid-Devonian period of the Paleozoic era. Today, the ferns comprise of more than 12,000 species whereas there are about 15 known species of horsetails. The species of horsetails lie in a single genus, Equisetum. It can be noticed that horsetail species are more closely linked to ferns as compared to the seed plants.

Conclusion

Therefore, it can be concluded that common ancestor of ferns and seed plants arose in mid-Devonian about 390 million years ago.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

1. In vivo testing provides valuable insight into a drug’s kinetics. Assessing drug kinetics following multiple different routes of administration provides greater insight than just a single route of administration alone. The following data was collected in 250 g rats following bolus iv, oral (po), and intraperitoneal (ip) administration.Using this data and set of graphs, determine: (a) k, C0, V, and AUC* for the bolus iv data (b) k, ka, B1, and AUC* for the po data (c) k, ka, B1, and AUC* for the ip data (d) relative bioavailability for po vs ip, Fpo/Fip (e) absolute po bioavailability, (f)Fpo absolute ip bioavailability, Fip MAKE SURE ANSWERS HAVE UNITS if appropriate. SHOW ALL WORK, including equation used, variables used and each step to your solution.

2. Drug quantification from plasma is commonly performed by using techniques such as HPLC or LC/MS. However, these methods do have limitations, and investigators may choose to use a radiolabeled analog of a drug instead. Radioligands are molecules that contain radioactive isotopes, commonly 3H or 14C. This technique allows investigators to quantify drug concentration from radiation measurements. The following measurements were made in 250 g rats following oral administration of 18.2 µCi of a 14C-labeled drug of interest: Time (min) Plasma Radiation Levels (µCi/L) 0 0.0 2 9.7 4 19.2 7 25.3 9 37.8 12 39.6 14 45.8 17 48.8 20 52.0 25 56.4 30 59.2 35 60.1 40 61.1 45 62.1 50 62.8 60 63.1 70 62.1 80 60.1 90 57.3 100 55.5 110 53.7 120 52.2 150 48.0 180 45.0 240 39.0 Note that a µCi is a measure of the amount of radioactivity and hence is a measure of the amount of drug present. Given that the oral bioavailability of this drug is known to be essentially 100%, estimate the following from this…

The current nutrition labelling regulation in Hong Kong requires food manufacturer to list E+7 information on the package of pre-packaged food products. Do you think that more nutrients, such as calcium and cholesterol, shall be included?

Answer 2

Question

Chapter 27, Problem 1Q

Summary Introduction

To review:

The time and the geological period when the last common ancestor of the seed plants as well as ferns lived.

Given:

The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.

Figure 1: The geological timescale of the origin of various embryophytes.

Introduction:

Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Expert Solution & Answer

Explanation of Solution

It can be clearly observed from Figure 1 that the common ancestor of ferns as well as the seed plants originated about 390 million years ago in the mid-Devonian period of the Paleozoic era. Today, the ferns comprise of more than 12,000 species whereas there are about 15 known species of horsetails. The species of horsetails lie in a single genus, Equisetum. It can be noticed that horsetail species are more closely linked to ferns as compared to the seed plants.

Conclusion

Therefore, it can be concluded that common ancestor of ferns and seed plants arose in mid-Devonian about 390 million years ago.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 27, Problem 1Q

Summary Introduction

To review:

The time and the geological period when the last common ancestor of the seed plants as well as ferns lived.

Given:

The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.

Figure 1: The geological timescale of the origin of various embryophytes.

Introduction:

Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Expert Solution & Answer

Explanation of Solution

It can be clearly observed from Figure 1 that the common ancestor of ferns as well as the seed plants originated about 390 million years ago in the mid-Devonian period of the Paleozoic era. Today, the ferns comprise of more than 12,000 species whereas there are about 15 known species of horsetails. The species of horsetails lie in a single genus, Equisetum. It can be noticed that horsetail species are more closely linked to ferns as compared to the seed plants.

Conclusion

Therefore, it can be concluded that common ancestor of ferns and seed plants arose in mid-Devonian about 390 million years ago.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 27, Problem 1Q

Summary Introduction

To review:

The time and the geological period when the last common ancestor of the seed plants as well as ferns lived.

Given:

The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.

Figure 1: The geological timescale of the origin of various embryophytes.

Introduction:

Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Expert Solution & Answer

Explanation of Solution

It can be clearly observed from Figure 1 that the common ancestor of ferns as well as the seed plants originated about 390 million years ago in the mid-Devonian period of the Paleozoic era. Today, the ferns comprise of more than 12,000 species whereas there are about 15 known species of horsetails. The species of horsetails lie in a single genus, Equisetum. It can be noticed that horsetail species are more closely linked to ferns as compared to the seed plants.

Conclusion

Therefore, it can be concluded that common ancestor of ferns and seed plants arose in mid-Devonian about 390 million years ago.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 27, Problem 1Q

Summary Introduction

To review:

The time and the geological period when the last common ancestor of the seed plants as well as ferns lived.

Given:

The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.

Figure 1: The geological timescale of the origin of various embryophytes.

Introduction:

Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Expert Solution & Answer

Explanation of Solution

It can be clearly observed from Figure 1 that the common ancestor of ferns as well as the seed plants originated about 390 million years ago in the mid-Devonian period of the Paleozoic era. Today, the ferns comprise of more than 12,000 species whereas there are about 15 known species of horsetails. The species of horsetails lie in a single genus, Equisetum. It can be noticed that horsetail species are more closely linked to ferns as compared to the seed plants.

Conclusion

Therefore, it can be concluded that common ancestor of ferns and seed plants arose in mid-Devonian about 390 million years ago.

Answer 6

Chapter 27, Problem 1Q

Summary Introduction

To review:

The time and the geological period when the last common ancestor of the seed plants as well as ferns lived.

Given:

The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.

Figure 1: The geological timescale of the origin of various embryophytes.

Introduction:

Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Expert Solution & Answer

Explanation of Solution

It can be clearly observed from Figure 1 that the common ancestor of ferns as well as the seed plants originated about 390 million years ago in the mid-Devonian period of the Paleozoic era. Today, the ferns comprise of more than 12,000 species whereas there are about 15 known species of horsetails. The species of horsetails lie in a single genus, Equisetum. It can be noticed that horsetail species are more closely linked to ferns as compared to the seed plants.

Conclusion

Therefore, it can be concluded that common ancestor of ferns and seed plants arose in mid-Devonian about 390 million years ago.

Answer 7

Chapter 27, Problem 1Q

Summary Introduction

To review:

The time and the geological period when the last common ancestor of the seed plants as well as ferns lived.

Given:

The fFigure 1 shows the geological timescale of the origin of various embryophytes (land plants) including ferns and seed plants.

Figure 1: The geological timescale of the origin of various embryophytes.

Introduction:

Horsetails, ferns, and seed plants form a clade commonly referred as euphyllophytes. These are the true leaf plants. Another important characteristic feature of these plants is overtopping. It is a growth pattern, where one branch of the plant gets differentiated from the other and grows beyond that other branch. This feature gives an advantage to the plants in competition for light.

Answer 8

Expert Solution & Answer

Explanation of Solution

It can be clearly observed from Figure 1 that the common ancestor of ferns as well as the seed plants originated about 390 million years ago in the mid-Devonian period of the Paleozoic era. Today, the ferns comprise of more than 12,000 species whereas there are about 15 known species of horsetails. The species of horsetails lie in a single genus, Equisetum. It can be noticed that horsetail species are more closely linked to ferns as compared to the seed plants.