If you were to find 60-million-year-old fossils of a species of land plants on the east coast of the northern part of North America, on what part of which continent would you begin a quest for similar fossils?
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If you were to find 60-million-year-old fossils of a species of land plants on the east coast of the northern part of North America, on what part of which continent would you begin a quest for similar fossils?
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- Plant life first appeared on land during which of the following periods? a. Cambrian period b. Ordovician period c. Silurian period d. Devonian periodWhat group of organisms shares the most recent common ancestor with plants?For fossils, we often must use a mix of artificial and natural classification. What is a form genus? If you found a specimen of fossil wood—but only wood, with no leaves or cones or bark—and it looked like wood of modern pines, what genus would you classify it in?
- When did plants first emerge? What kinds of fossils were found to give us some ideas about the timeline? What group of green algae is most closely related to plants? How do we know?What kind of fossils were formed out of dinosaur remains and activities? Why do you say so? (Give three)If the stomata of bryophytes and of vascular plants are not an example of convergent evolution, what is an alternative explanation for their appearance in these groups?
- What are trumpet cells in brown algae? What type of cells do they resemble in true plants? Is their presence in brown algae a sign that brown algae are related to the ancestors of true plants, or is it just a remarkable case of convergent evolution?What do you think geologists would find in the rock record as evidence of human life today million years later? Do you think we will leave a lot of traces and evidences of our existence in the fossil record?During what era did pangs begin to break up? A. Cretaceous B. Triassic
- The production of megaphylls by many different species of plants is an example of _____. a. parallel evolution b. analogy c. divergent evolution d. homologyFossils show that dinosaurs originated between 200 and 250 million years ago. Would you expect the geographic distribution of early dinosaur fossils to be on multiple continents or on a single continent? Explain. Hint: refer to continental drift in your explanation.For about how many years of geological time have the dinosours existed on earth?? Did dinosours exist at the same time as humans? How do scientists determine when an era begins and when it ends? What is the purpose of making a geological timeline