Do Now’s First Marking period

Do Now The diagram below shows undisturbed sedimentary strata at the bottom of an ocean. The fossils found in layer B resemble the fossils found in layer A. This similarity suggests that

Do Now Which of the following best explains how the fossil record provides evidence that evolution has occurred? A. It indicates that forms of life existed on Earth at least 3.5 billion years ago. B. It indicates the exact cause of structural and behavioral adaptations of organisms. C. It shows how embryos of many different vertebrate species are very similar. D. It shows that the form and structure of groups of organisms have changed over time.

Do Now 10/14/14 Copy the question and only the letter for the answer Two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. Which of the following could be an unavoidable source of experimental error? a. Variation in the strawberry plants b. The cost of watering the plants c. Fertilization during the study d. Length of the study Answer is A

Do now Caytonia is an extinct plant that existed between 200 and 140 million years ago. It had reproductive structures that resemble structures in modern flowering plants. How do scientists know about the structures of this ancient extinct plant? a. Scientists study the DNA sequences of Caytonia. b. Scientists genetically engineer modern plants to produce Caytonia. c. Scientists excavate and examine the fossilized remains of Caytonia. d. Scientists observe the adaptations of plants in habitats resembling those of Caytonia.

Do Now – Write the best answer Similar structures are present in the embryos of fish, chickens, and rabbits. In fish, these structures develop into gills, but in chickens and rabbits, they either disappear or develop into other body parts later in embryonic development. Which of the statements below best explains the presence of these structures in the embryos of all three species? a. The embryos of the three species are similar in size. b. Breathing structures are similar among the young of the three species. c. The three species have common ancestor with these embryonic structures. d. The reproductive mechanisms are similar among the adults of the three species.

Do Now The pea weevil is a type of insect. The table below shows the average time it takes for pea weevil eggs to hatch at different temperatures. Based on the data, which of the following conditions would promote the highest population growth rate in pea weevils?

a. cold springs with temperatures from 11oC to 16oC b. moderate summers with temperatures from 25oC to 27oC c. heat waves in which temperature is sustained well above 28oC d. overnight frosts after which the temperature warms from 0oC to 11oC

Do Now Which statement concerning the evolution of species A, B, C, D, and E is supported by the diagram below? a. Species B and C can be found in today’s environments. b. Species A and D evolved from E c. Species A and C can still interbreed d. Species A, B, and E all evolved from a common ancestor and all are successful today.

What is the best evidence of evolution? Do now 10/16/14 What is the best evidence of evolution?

Do Now – Write the best answer! The illustrations below show vestigial pelvic bones of a baleen whale and vestigial hind limb bones of an extinct whale. The presence of these bones in the baleen whale and extinct whale provides evidence of which of the following? Whales can travel on land when necessary. B. Whales evolved from four-legged animals. C. Whales have functional legs that are hidden by fat and skin. D. Whales are developing into animals with four functioning limbs