Name: ID: A Which of the following is NOT documented by the fossil record? a. So

Question

Name: ID: A Which of the following is NOT documented by the fossil record? a. Some organisms that lived in the past are unlike living organisms we see today b. Some organisms that once lived on Earth have disappeared. c. The species living today are the same as the species that lived in the distant past d. Over time, life has evolved. 53. 54. You are looking at the side of a cliff with many clearly visible layers of rock. In the top layer, you find the fossil of a mouse. In the next layer down, you find the fossil of a frog. Two layers down from that, you find the fossil of a beetle and, in the deepest layer, the fossil of a millipede. This is evidence that a. mice evolved before frogs b. frogs evolved after mice c. millipedes were the first among these animals to evolve d. the beetle evolved before millipedes 55. We know that whales evolved from the same evolutionary ancestor as hoofed animals like cows and a. whales, cows, and hippopotamuses have the same DNA sequence b. whales, cows, and hippopotamuses all exhibit an anklebone with a unique shape c, scientists have been able to induce whale cmbryos to develop into cows in the laboratory d. remnants of horns are obvious on the skulls of whales 56, which kind of organism makes up the oldest fossil found on Earth? a. protists b. animals ? c. bacteria d. plants 57. The first eukaryotes evolved approximately a. 200,000 b. 200 million years ago. c. 2 billion d. 2 trillion 8. The Cambrian explosion a. caused a lack of air in Earth's atmospbere b. was caused by an increase in volcanic activity c. was volcanic in nature d. increased the diversity of animal life on Earth 59. The first vertcbratcs to colonize land were a. birds b. mammals d. reptiles 60. The first land plants were descendants of fungi that developed photosynthesis a. b. c. evolved from green algac that could already carry out photosynthesis were ferns and small shrubs d. grew from the seeds of emarine plants 61. The first group of vertebrates that could complete their life cycle without returning to water was a. amphibians b. reptiles c. mammals d. birds

Explanation / Answer

53. D. We cannot predict that life has evolved.

54.C. millipede were the first to evolve as they have been found in the deepest layer of the rock. Hence all others appeared later.

55. B. Whales seem so different because of their streamlined body for swimming adaptations.

56. C. Cyanobacteria are the oldest whose fossils have been found and these belong to bacteria.

57. C. The oldest eukaryotes appeared on earth date back to 2.8 billion years ago.

58. D. Increased the diversity of life on earth due to relatively higher evolution rate as compared to other eras. This was due to sudden increase of gases to moderate levels in the oceans.

59. C. Amphibians

60. B. First plants evolved from algae and these were bryophtes which later developed into higher plants.

61. B. Reptiles were the first which did not need water for completing life cycle.

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