the fossil record shows that dinosaurs with feathers existed millions of years before birds this is evidence for

ATI TEAS 7

ati teas 7 science

1. The fossil record shows that dinosaurs with feathers existed millions of years before birds. This is evidence for

A. Convergent evolution (unrelated organisms evolving similar traits)
B. Divergent evolution (related organisms evolving different traits)
C. Coevolution (two species influencing each other's evolution)
D. The extinction of dinosaurs due to an asteroid impact

Correct answer: A

Rationale: The fossil record indicates that dinosaurs had feathers before birds, suggesting convergent evolution. Convergent evolution occurs when unrelated organisms independently evolve similar traits to adapt to similar environmental pressures. In this case, both dinosaurs and birds developed feathers for flight or insulation purposes, even though they are not closely related. This evidence supports the concept of convergent evolution rather than divergent evolution, coevolution, or the extinction of dinosaurs due to an asteroid impact. Therefore, the correct answer is A, as it best explains the scenario where dinosaurs with feathers existed before birds, showcasing the concept of unrelated organisms evolving similar traits independently.

2. A ball is rolling across the floor and comes to a stop on its own. What force caused the ball to stop?

A. Gravitational force
B. Normal force from the floor
C. Air resistance
D. None of the above

Correct answer: C

Rationale: The force that caused the ball to stop rolling across the floor is air resistance. As the ball moves through the air, air resistance acts in the opposite direction of its motion, gradually slowing it down until it comes to a stop. In this scenario, the ball is not in contact with the floor, so the normal force from the floor does not play a role in stopping the ball. Gravitational force acts to pull objects towards the center of the Earth and would not directly stop the ball in this situation. Therefore, air resistance is the force that opposes the motion of the rolling ball and causes it to come to a stop.

3. Many _____ books are popular among adults these days.

A. Children's
B. Childrens's
C. Childrens'
D. Childrens

Correct answer: A

Rationale: The correct answer is 'Children's.' In this context, 'Children's' is the correct possessive form to indicate that the books belong to or are associated with children. Choice B ('Childrens's') is incorrect due to the unnecessary extra 's' after the apostrophe. Choice C ('Childrens'') is wrong as it is missing the apostrophe to show possession. Choice D ('Childrens') is incorrect as it is missing the apostrophe and does not form the possessive form correctly.

4. Which sentence uses parentheses correctly?

A. The suspect was seen driving a red car (a witness reported).
B. The movie (released in 2022) received critical acclaim.
C. The restaurant offers a variety of dishes (including vegetarian options).
D. All participants (must register by Friday) will receive a free gift.

Correct answer: B

Rationale: The correct use of parentheses is to provide additional non-essential information to the main sentence. In option B, 'released in 2022' is additional detail about the movie but not necessary for the sentence's core meaning. Options A, C, and D could function without parentheses without affecting their essential message, making them incorrect uses of parentheses in this context. Therefore, choice B is the correct answer.

5. If a doctor diagnoses a patient with an impaired posterior pituitary gland, which of the following symptoms related to kidney function does the patient display?

A. Thirst
B. Tiredness
C. Weight gain
D. Concentrated urine

Correct answer: D

Rationale: When the posterior pituitary gland is impaired, there is decreased secretion of antidiuretic hormone (ADH). ADH plays a crucial role in regulating water reabsorption by the kidneys. A deficiency of ADH leads to the inability of the kidneys to concentrate urine, resulting in the production of dilute urine. Therefore, 'Concentrated urine' is the correct symptom associated with impaired posterior pituitary gland. Choices A, B, and C are incorrect. Thirst is more commonly associated with diabetes insipidus, tiredness could be a general symptom but not specifically related to kidney function, and weight gain is not a typical symptom of impaired posterior pituitary gland affecting kidney function.