Whether the extant gymnosperms and angiosperms arose at the same time. Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms. Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old ( Jurassicperiod ) and angiosperms were originated about 140 million years ago ( early Cretaceous period )in Mesozoic Era .

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Answer 1

Question

Chapter 30.2, Problem 3CC

Summary Introduction

To review: Whether the extant gymnosperms and angiosperms arose at the same time.

Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms.

Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old (Jurassicperiod) and angiosperms were originated about 140 million years ago (early Cretaceous period)in Mesozoic Era.

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Answer 2

Question

Chapter 30.2, Problem 3CC

Summary Introduction

To review: Whether the extant gymnosperms and angiosperms arose at the same time.

Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms.

Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old (Jurassicperiod) and angiosperms were originated about 140 million years ago (early Cretaceous period)in Mesozoic Era.

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Answer 3

Question

Chapter 30.2, Problem 3CC

Summary Introduction

To review: Whether the extant gymnosperms and angiosperms arose at the same time.

Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms.

Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old (Jurassicperiod) and angiosperms were originated about 140 million years ago (early Cretaceous period)in Mesozoic Era.

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Answer 4

Question

Chapter 30.2, Problem 3CC

Summary Introduction

To review: Whether the extant gymnosperms and angiosperms arose at the same time.

Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms.

Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old (Jurassicperiod) and angiosperms were originated about 140 million years ago (early Cretaceous period)in Mesozoic Era.

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Answer 5

Chapter 30.2, Problem 3CC

Summary Introduction

To review: Whether the extant gymnosperms and angiosperms arose at the same time.

Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms.

Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old (Jurassicperiod) and angiosperms were originated about 140 million years ago (early Cretaceous period)in Mesozoic Era.

Answer 6

Chapter 30.2, Problem 3CC

Summary Introduction

To review: Whether the extant gymnosperms and angiosperms arose at the same time.

Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms.

Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old (Jurassicperiod) and angiosperms were originated about 140 million years ago (early Cretaceous period)in Mesozoic Era.

Answer 7

Chapter 30.2, Problem 3CC

Summary Introduction

To review: Whether the extant gymnosperms and angiosperms arose at the same time.

Concept introduction: The extant gymnosperms are the still existing gymnosperm plant species, which have an evolutionary relationship with the angiosperms. According to phylogenetic hypothesis, Gnetophyta (phyla of extant gymnosperms) are the sister taxa of angiosperms.

Even though the angiosperms are evolved from the extant gymnosperm, they did not arose at the same time because the ancient fossils of extant gymnosperms were about 305 million years old (Jurassicperiod) and angiosperms were originated about 140 million years ago (early Cretaceous period)in Mesozoic Era.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 30.1 - Contrast how sperm reach the eggs of seedless...Ch. 30.1 - What features not present in seedless plants have...Ch. 30.1 - WHAT IF? If a seed could not enter dormancy, how...Ch. 30.2 - Use examples from Figure 30.7 to describe how...Ch. 30.2 - Explain how the pine life cycle in Figure 30.4...Ch. 30.2 - Prob. 3CC Ch. 30.3 - It is said that an oak is an acorns way of making...Ch. 30.3 - Compare and contrast a pine cone and a flower in...Ch. 30.3 - WHAT IF? Do speciation rates in closely related...Ch. 30.4 - Explain why plant diversity can be considered a...

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